Download - Introduction to Aspen Plus --2014
![Page 1: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/1.jpg)
Introduction to Aspen Plus
Speaker: Bor-Yih Yu(余柏毅)
Date: 2013/09/02
PSE Laboratory
Department of Chemical Engineering
Nation Taiwan University
(綜合 room 402)
Edited by: 程建凱/吳義章/余柏毅
![Page 2: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/2.jpg)
2
Introduction to Aspen Plus
Part 1: Introduction
![Page 3: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/3.jpg)
What is Aspen Plus
• Aspen Plus is a market-leading process modeling tool for conceptual design, optimization, and performance monitoring for the chemical, polymer, specialty chemical, metals and minerals, and coal power industries.
3 Ref: http://www.aspentech.com/products/aspen-plus.cfm
![Page 4: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/4.jpg)
What Aspen Plus provides
• Physical Property Models – World’s largest database of pure component and phase equilibrium
data for conventional chemicals, electrolytes, solids, and polymers
– Regularly updated with data from U. S. National Institute of Standards and Technology (NIST)
• Comprehensive Library of Unit Operation Models – Addresses a wide range of solid, liquid, and gas processing equipment
– Extends steady-state simulation to dynamic simulation for safety and controllability studies, sizing relief valves, and optimizing transition, startup, and shutdown policies
– Enables you build your own libraries using Aspen Custom Modeler or programming languages (User-defined models)
Ref: Aspen Plus® Product Brochure
4
![Page 5: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/5.jpg)
More Detailed
• Properties analysis
– Properties of pure component and mixtures (Enthalpy, density, viscosity, heat capacity,…etc)
– Phase equilibrium (VLE, VLLE, azeotrope calculation…etc)
– Parameters estimation for properties models (UNIFAC method for binary parameters, Joback method for boiling points…etc)
– Data regression from experimental deta
• Process simulation
– pump, compressor, valve, tank, heat exchanger, CSTR, PFR, distillation column, extraction column, absorber, filter, crystallizer…etc 5
![Page 6: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/6.jpg)
What course Aspen Plus can be employed for
• MASS AND ENERGY BALANCES
• PHYSICAL CHEMISTRY
• CHEMICAL ENGINEERING THERMODYNAMICS
• CHEMICAL REACTION ENGINEERING
• UNIT OPERATIONS
• PROCESS DESIGN
• PROCESS CONTROL
6
![Page 7: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/7.jpg)
Lesson Objectives
• Familiar with the interface of Aspen Plus
• Learn how to use properties analysis
• Learn how to setup a basic process simulation
7
![Page 8: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/8.jpg)
Outline • Part 1 : Introduction
• Part 2 : Startup
• Part 3 : Properties analysis
• Part 4 : Running Simulation in Aspen Plus (simple units)
• Part 5 : Running Simulation in Aspen Plus (Reactors)
• Part 6 : Running Simulation in Aspen Plus (Distillation)
• Part 7 (additional): Running Simulation in Aspen Plus (Design, spec and vary)
8
![Page 9: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/9.jpg)
Introduction to Aspen Plus
9
Part 2: Startup
![Page 10: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/10.jpg)
Start with Aspen Plus
Aspen Plus User Interface
![Page 11: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/11.jpg)
Aspen Plus Startup
11
![Page 12: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/12.jpg)
Interface of Aspen Plus
Process Flowsheet Windows
Model Library (View| Model Library )
Stream
Help
Setup
Components
Properties
Streams
Blocks
Data Browser
Next
Check Result
Stop
Reinitialize
Step
Start
Control Panel
Process Flowsheet Windows
Model Library (View| Model Library )
Status message 12
![Page 13: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/13.jpg)
More Information
Help for Commands for Controlling Simulations 13
![Page 14: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/14.jpg)
Data Browser
• The Data Browser is a sheet and form viewer with a hierarchical tree view of the available simulation input, results, and objects that have been defined
14
![Page 15: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/15.jpg)
Setup – Specification
Run Type
Input mode
15
![Page 16: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/16.jpg)
Input components
Remark: If available, are
16
![Page 17: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/17.jpg)
Properties
Process type(narrow the number of methods available)
Base method: IDEAL, NRTL, UNIQAC, UNIFAC…
17
![Page 18: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/18.jpg)
Property Method Selection—General Rule
18
Example 1: water - benzene
Example 2: benzene - toluene
![Page 19: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/19.jpg)
Typical Activity Coefficient Models
Non-Randon-Two Liquid Model (NRTL)
Uniquac Model
Unifac Model
![Page 20: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/20.jpg)
Typical Equation of States
Peng-Robinson (PR) EOS
Redlich-Kwong (RK) EOS
Haydon O’Conell (HOC) EOS
![Page 21: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/21.jpg)
Thermodynamic Model – NRTL
NRTL
21
![Page 22: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/22.jpg)
NRTL – Binary Parameters
Click “NRTL” and then built-in binary parameters
appear automatically if available.
22
![Page 23: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/23.jpg)
Access Properties Models and Parameters
23
Review Databank Data
![Page 24: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/24.jpg)
Review Databank Data
Description of each parameter
Including: Ideal gas heat of formation at 298.15 K
Ideal gas Gibbs free energy of formation at
298.15 K
Heat of vaporization at TB
Normal boiling point
Standard liquid volume at 60°F ….
24
![Page 25: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/25.jpg)
Pure Component Temperature-Dependent Properties
CPIGDP-1 ideal gas heat capacity
CPSDIP-1 Solid heat capacity
DNLDIP-1 Liquid density
DHVLDP-1 Heat of vaporization
PLXANT-1 Extended Antoine Equation
MULDIP Liquid viscosity
KLDIP Liquid thermal conductivity
SIGDIP Liquid surface tension
UFGRP UNIFAC functional group
25
![Page 26: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/26.jpg)
Example: PLXANT-1 (Extended Antoine Equation)
?
Corresponding Model
Click “↖?” and then click where you don’t know
26
![Page 27: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/27.jpg)
Example: CPIGDP-1 (Ideal Gas Heat Capacity Equation)
?
Corresponding Model
27
![Page 28: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/28.jpg)
Basic Input---Summary
• The minimum required inputs to run a simulation are:
– Setup
– Components
– Properties
– Streams
– Blocks
Property Analysis
Process Simulation
28
![Page 29: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/29.jpg)
29
Introduction to Aspen Plus
Part 3: Property analysis
![Page 30: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/30.jpg)
Overview of Property Analysis Use this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary Maps Ternary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
30
***When you start properties analysis, you MUST specify components ,
thermodynamic model and its corresponding parameters. (Refer to Part 2)
![Page 31: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/31.jpg)
Find Components
31
Component ID : just for distinguishing in Aspen.
Type : Conventional, Solid….etc
Component name : real component name
Formula : real component formula
![Page 32: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/32.jpg)
Find Components
32
TIP 1: For common components, you can
enter directly the common name or molecular
equation of the components in “component
ID”.
(like water, CO2, CO, Chlorine…etc)
![Page 33: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/33.jpg)
Find Components
33
TIP 2: If you know the component name
(like N-butanol, Ethanol….etc), you can
enter it in “component name”.
![Page 34: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/34.jpg)
Find Components
34
TIP 3: You can also enter the formula of the
component. (Be aware of the isomers)
You can also click “Find” to search for
component of given CAS number,
molecular weight without knowing its
molecular formula, or if you don’t know the
exactly component name
![Page 35: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/35.jpg)
Select Thermodynamic Model
35
Select NRTL
![Page 36: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/36.jpg)
Check Binary Parameter
36
Click This, it will automatically change to
red if binary parameter exists.
Properties
Parameters
NRTL-1
![Page 37: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/37.jpg)
Find Components
37
TIP 2: If you know the component name
(like N-butanol, Ethanol….etc), you can
enter it in “component name”.
![Page 38: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/38.jpg)
Find Components
38
You can enter
the way of
searching…
![Page 39: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/39.jpg)
Properties Analysis – Pure Component
39
![Page 40: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/40.jpg)
Available Properties
Property (thermodynamic) Property (transport)
Availability Free energy Thermal conductivity
Constant pressure heat capacity
Enthalpy Surface tension
Heat capacity ratio Fugacity coefficient Viscosity
Constant volume heat capacity
Fugacity coefficient pressure correction
Free energy departure Vapor pressure
Free energy departure pressure correction
Density
Enthalpy departure Entropy
Enthalpy departure pressure correction
Volume
Enthalpy of vaporization
Sonic velocity
Entropy departure 40
![Page 41: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/41.jpg)
Example1: CP (Heat Capacity)
1. Select property (CP)
2. Select phase
3. Select component
4. Specify range of temperature
5. Specify pressure
6. Select property method
7. click Go to generate the results
Add “N-butyl-acetate”
41
![Page 42: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/42.jpg)
Example1: Calculation Results of CP
Data results 42
![Page 43: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/43.jpg)
Properties Analysis – Binary Components
![Page 44: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/44.jpg)
Binary Component Properties Analysis
Use this Analysis type To generate
Txy Temperature-compositions diagram at constant pressure
Pxy Pressure-compositions diagram at constant temperature
Gibbs energy of mixing
Gibbs energy of mixing diagram as a function of liquid compositions. The Aspen Physical Property System uses this diagram to determine whether the binary system will form two liquid phases at a given temperature and pressure.
![Page 45: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/45.jpg)
Example: T-XY 1. Select analysis type (Txy)
2. Select phase (VLE, VLLE)
2. Select two component
4. Specify composition range
5. Specify pressure
6. Select property method
3. Select compositions basis
7. click Go to generate the results
![Page 46: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/46.jpg)
Example: calculation result of T-XY
Data results
![Page 47: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/47.jpg)
Example: Generate XY plot
Click “plot wizard” to generate XY plot
![Page 48: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/48.jpg)
Example: Generate XY plot (cont’d)
![Page 49: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/49.jpg)
Properties Analysis – Ternary (add one new components)
![Page 50: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/50.jpg)
Properties Analysis – Ternary (Check NRTL binary parameter)
3 components -> 3 set of binary parameter
(How about 4 components??)
![Page 51: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/51.jpg)
Properties Analysis – Ternary
![Page 52: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/52.jpg)
Ternary Map
4. Select phase (VLE, LLE)
1. Select three component
5. Specify pressure
3. Select property method
2. Specify number of tie line
7. click Go to generate the results
6. Specify temperature
(if LLE is slected)
![Page 53: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/53.jpg)
Calculation Result of Ternary Map (LLE)
Data results
![Page 54: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/54.jpg)
Property Analysis – Conceptual Design
Use this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary Maps Ternary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
54
(Optional)
![Page 55: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/55.jpg)
Conceptual Design
![Page 56: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/56.jpg)
Azeotrope Analysis
![Page 57: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/57.jpg)
Azeotrope Analysis
4. Select phase (VLE, LLE)
1. Select components (at least two) 2. Specify pressure
3. Select property method
5. Select report Unit
6. click Report to generate the results
![Page 58: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/58.jpg)
Error Message
Close analysis input dialog box (pure or binary analysis)
![Page 59: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/59.jpg)
Azeotrope Analysis Report
![Page 60: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/60.jpg)
Ternary Maps
![Page 61: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/61.jpg)
Ternary Maps
4. Select phase (VLE, LLE) 1. Select three components
2. Specify pressure
3. Select property method
5. Select report Unit
6. Specify temperature of LLE
(If liquid-liquid envelope is selected)
6. Click Ternary Plot to generate the results
![Page 62: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/62.jpg)
Ternary Maps
Ternary Plot Toolbar:
Add Tie line, Curve,
Marker…
Change pressure or
temperature
![Page 63: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/63.jpg)
63
Introduction to Aspen Plus
Part 4: Running simulation
Simple Units
(Mixer, Pump, valve, flash, heat exchanger)
![Page 64: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/64.jpg)
Example 1: Calculate the mixing properties of two stream
1
23
4
Mixer Pump
1 2 3 4
Mole Flow kmol/hr
WATER 10 0 ? ?
BUOH 0 9 ? ?
BUAC 0 6 ? ?
Total Flow kmol/hr 10 15 ? ?
Temperature C 50 80 ? ?
Pressure bar 1 1 1 10
Enthalpy kcal/mol ? ? ? ?
Entropy cal/mol-K ? ? ? ?
Density kmol/cum ? ? ? ? 64
![Page 65: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/65.jpg)
Setup – Specification
Select Flowsheet
65
![Page 66: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/66.jpg)
Reveal Model Library
View|| Model Library
or press F10
66
![Page 67: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/67.jpg)
Adding a Mixer
Click “one of icons”
and then click again on the flowsheet window
Remark: The shape of the icons are meaningless
67
![Page 68: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/68.jpg)
Adding Material Streams
Click “Materials” and then click
again on the flowsheet window
68
![Page 69: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/69.jpg)
Adding Material Streams (cont’d)
When clicking the mouse on the flowsheet window,
arrows (blue and red) appear.
69
![Page 70: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/70.jpg)
Adding Material Streams (cont’d)
When moving the mouse on the arrows, some description appears.
Blue arrow: Water
decant for Free water
of dirty water.
Red arrow(Left) Feed
(Required; one ore more
if mixing material
streams)
Red arrow(Right):
Product (Required; if
mixing material streams)
70
![Page 71: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/71.jpg)
Adding Material Streams (cont’d)
After selecting “Material Streams”, click and pull a stream line.
Repeat it three times to generate three stream lines.
71
![Page 72: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/72.jpg)
Reconnecting Material Streams (Feed Stream)
Right Click on the stream and
select Reconnect Destination
72
![Page 73: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/73.jpg)
Reconnecting Material Streams (Product Stream)
Right Click on the stream and
select Reconnect Source
B1
1
2
3
73
![Page 74: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/74.jpg)
Specifying Feed Condition
Right Click on the stream
and select Input
74
![Page 75: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/75.jpg)
Specifying Feed Condition (cont’d)
1 2
75
![Page 76: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/76.jpg)
Specifying Input of Mixer
Right Click on the block and select Input
76
![Page 77: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/77.jpg)
Specifying Input of Mixer (cont’d)
Specify Pressure and valid phase
77
![Page 78: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/78.jpg)
Run Simulation
Click ► to run the simulation
Check “simulation status”
“Required Input Complete” means the input is ready to run simualtion
Run Start or continue calculations
Step Step through the flowsheet one block at a time
Stop Pause simulation calculations
Reinitialize Purge simulation results
78
![Page 79: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/79.jpg)
Status of Simulation Results
Message Means
Results available The run has completed normally, and results are present.
Results with warnings
Results for the run are present. Warning messages were generated during the calculations. View the Control Panel or History for messages.
Results with errors Results for the run are present. Error messages were generated during the calculations. View the Control Panel or History for messages.
Input Changed
Results for the run are present, but you have changed the input since the results were generated. The results may be inconsistent with the current input.
79
![Page 80: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/80.jpg)
Stream Results
Right Click on the block and
select Stream Results
80
![Page 81: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/81.jpg)
1 2 3
Substream: MIXED Mole Flow kmol/hr
WATER 10 0 10
BUOH 0 9 9
BUAC 0 6 6
Total Flow kmol/hr 10 15 25
Total Flow kg/hr 180.1528 1364.066 1544.218
Total Flow cum/hr 0.18582 1.74021 1.870509
Temperature C 50 80 70.08758
Pressure bar 2 1 1
Vapor Frac 0 0 0
Liquid Frac 1 1 1
Solid Frac 0 0 0
Enthalpy kcal/mol -67.81 -94.3726 -83.7476
Enthalpy kcal/kg -3764.03 -1037.77 -1355.82
Enthalpy Gcal/hr -0.6781 -1.41559 -2.09369
Entropy cal/mol-K -37.5007 -134.947 -95.6176
Entropy cal/gm-K -2.0816 -1.48395 -1.54799
Density kmol/cum 53.81564 8.619647 13.36534
Density kg/cum 969.5038 783.851 825.5604
Average MW 18.01528 90.93771 61.76874
Liq Vol 60F cum/hr 0.1805 1.617386 1.797886
Pull down the list and select
“Full” to show more properties
results.
81
Enthalpy and Entropy
![Page 82: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/82.jpg)
Change Units of Calculation Results
82
![Page 83: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/83.jpg)
Setup – Defining Your Own Units Set
83
![Page 84: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/84.jpg)
Setup – Report Options
84
![Page 85: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/85.jpg)
Stream Results with Format of Mole Fraction
85
![Page 86: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/86.jpg)
Add Pump Block
86
![Page 87: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/87.jpg)
Add A Material Stream
87
![Page 88: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/88.jpg)
Connect Streams
88
![Page 89: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/89.jpg)
Pump – Specification
2. Specify pump outlet specification
(pressure, power)
1. Select “Pump” or “turbine”
3. Efficiencies (Default: 1)
89
![Page 90: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/90.jpg)
Run Simulation
Click ► to generate the results
Check “simulation status”
“Required Input Complete”
90
![Page 91: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/91.jpg)
Block Results (Pump)
Right Click on the block and select Results
91
![Page 92: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/92.jpg)
92
![Page 93: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/93.jpg)
Streams Results
93
![Page 94: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/94.jpg)
Calculation Results (Mass and Energy Balances)
1
23
4
Mixer Pump
1 2 3 4
Mole Flow kmol/hr
WATER 10 0 10 10
BUOH 0 9 9 9
BUAC 0 6 6 6
Total Flow kmol/hr 10 15 25 25
Temperature C 50 80 70.09 71.20
Pressure bar 1 1 1 10
Enthalpy kcal/mol -67.81 -94.37 -83.75 -83.69
Entropy cal/mol-K -37.50 -134.95 -95.62 -95.46
Density kmol/cum 969.50 783.85 825.56 824.29 94
![Page 95: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/95.jpg)
Exercise
1
2 46
Mixer Pump3
5
1 2 3 4 5 6
Mole Flow kmol/hr
Water 10 0 0 ? ? ?
Ethanol 0 5 0 ? ? ?
Methanol 0 0 15 ? ? ?
Total Flow kmol/hr 10 15 15 ? ? ?
Temperature C 50 70 40 ? ? ?
Pressure bar 1 1 1 1 4 2
Enthalpy kcal/mol ? ? ? ? ? ?
Entropy cal/mol-K ? ? ? ? ? ?
Density kmol/cum ? ? ? ? ? ?
95 Please use Peng-Robinson EOS to solve this problem.
![Page 96: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/96.jpg)
Example 2: Flash Separation
Saturated Feed
P=1atm
F=100 kmol/hr
zwater=0.5
zHAc=0.5
T=105 C
P=1atm
What are flowrates and compositions of the two outlets?
0.0 0.2 0.4 0.6 0.8 1.0100
105
110
115
120
T (
oC
)x
Water and y
Water
T-x
T-y
![Page 97: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/97.jpg)
Input Components
![Page 98: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/98.jpg)
Thermodynamic Model: NRTL-HOC
![Page 99: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/99.jpg)
Check Binary Parameters
![Page 100: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/100.jpg)
Association parameters of HOC
![Page 101: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/101.jpg)
Binary Parameters of NRTL
![Page 102: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/102.jpg)
Binary Analysis
![Page 103: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/103.jpg)
T-xy plot
1. Select analysis type (Txy) 2. Select phase (VLE, VLLE)
2. Select two component
4. Specify composition range
5. Specify pressure
6. Select property method 3. Select compositions basis
7. click Go to generate the results
![Page 104: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/104.jpg)
Calculation Result of T-xy
Data results
![Page 105: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/105.jpg)
Generate xy plot
![Page 106: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/106.jpg)
Generate xy plot (cont’d)
![Page 107: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/107.jpg)
Add Block: Flash2
![Page 108: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/108.jpg)
Add Material Stream
![Page 109: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/109.jpg)
Specify Feed Condition
Saturated Feed
(Vapor fraction=0)
P=1atm
F=100 kmol/hr
zwater=0.5
zHAc=0.5
![Page 110: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/110.jpg)
Block Input: Flash2
![Page 111: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/111.jpg)
Flash2: Specification
T=105 C
P=1atm
![Page 112: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/112.jpg)
Required Input Complete
Click ► to run simulation
**Before running simulation, property
analysis should be closed.
![Page 113: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/113.jpg)
Stream Results
![Page 114: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/114.jpg)
Stream Results (cont’d)
Saturated Feed
P=1atm
F=100 kmol/hr
zwater=0.5
zHAc=0.5
T=105 C
P=1atm
42.658 kmol/hr
zwater=0.501
zHAc=0.409
57.342 kmol/hr
zwater=0.432
zHAc=0.568
![Page 115: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/115.jpg)
HEAT EXCHANGE
熱物流 入口温度:200℃、入口壓力:0.4 MPa 流量:10000kg/hr 组成:苯 50%,苯乙烯 20%,水 10%
冷卻水 入口温度:20℃、入口压力:1.0 MPa 流量:60000 kg/hr。
熱流出口氣相分率為 0 (飽和液相)
![Page 116: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/116.jpg)
116
COMPONENTS – SPECIFICATION
![Page 117: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/117.jpg)
117
Thermodynamic Model – NRTL
![Page 118: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/118.jpg)
ADD BLOCK: HEATX
![Page 119: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/119.jpg)
Feeds Conditions
HOT-IN CLD-IN
![Page 120: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/120.jpg)
BLOCK INPUT
![Page 121: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/121.jpg)
121
Check result
![Page 122: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/122.jpg)
122
Check result
![Page 123: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/123.jpg)
123
Introduction to Aspen Plus
Part 5: Running simulation
Reactor Systems
(RGIBBS, RPLUG,RCSTR)
![Page 124: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/124.jpg)
124
Equilibrium Reactor: RGIBBS
1. Reaction Kinetics are unknown.
2. There are lots of products
RGIBBS unit predicts the product by
minimizing GIBBS energy in the system
It is very Useful When…:
![Page 125: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/125.jpg)
125
Equilibrium Reactor: RGIBBS
222
2422
242
24
3
HCOOHCO
OHCHHCO
OHCHHCO
Reactions:
Fresh Feed
Flow rate 1000 (kmol/h)
CO 0.2368
H2 0.7172
H2O 0.0001
CH4 0.0098
CO2 0.0361
T=300 k
P=470 psia
![Page 126: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/126.jpg)
126
Equilibrium Reactor: RGIBBS
![Page 127: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/127.jpg)
Equilibrium Reactor: RGIBBS
Inside the Block:
![Page 128: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/128.jpg)
128
Check result
![Page 129: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/129.jpg)
KINETICS REACTORS: RPLUG
Reaction :Exothermic & reversible
222 HCOOHCO )/(09.41 molKJH
)85458
exp(1.3922
)47400
exp(545.51
)(222
RTk
RTk
skgcat
kmolYYkYYkRate
r
f
HCOrOHCOf
Rate [=] Kmol/Kgcat/s
Activation Energy [=] KJ/Kmol
![Page 130: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/130.jpg)
KINETICS REACTORS: RPLUG
Reaction :Exothermic & reversible
222 HCOOHCO )/(09.41 molKJH
Catalyst Loading = 0.1865 Kg
Bed Voidage = 0.8928
Feed Temperature = 583K
Feed Pressure = 1 bar
Reactor Length = 10 m
Reactor Diameter = 5m
Fresh Feed
Flow rate 200 (mol/h)
CO 0.030
H2 0.430
H2O 0.392
CO2 0.148
![Page 131: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/131.jpg)
KINETICS REACTORS: RPLUG
Feed Stream:
![Page 132: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/132.jpg)
KINETICS REACTORS: RPLUG
Reaction Setting:
![Page 133: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/133.jpg)
KINETICS REACTORS: RPLUG
Reaction Setting:
![Page 134: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/134.jpg)
KINETICS REACTORS: RPLUG
RPLUG Setting:
![Page 135: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/135.jpg)
KINETICS REACTORS: RPLUG
RPLUG Setting:
![Page 136: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/136.jpg)
KINETICS REACTORS: RPLUG
RPLUG Setting:
![Page 137: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/137.jpg)
137
Check result
![Page 138: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/138.jpg)
138
Check result
![Page 139: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/139.jpg)
139
Check result
Select Reactor Length column
Plot -> x-Axis variable
Select Temperature Column
Plot -> y-Axis variable
Display Plot
![Page 140: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/140.jpg)
140
Check result Block B2 (RPlug) Profiles Process Stream
Reactor length MIXED meter
TE
MP
ER
AT
UR
E K
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
58
5.0
58
7.5
59
0.0
59
2.5
59
5.0
59
7.5
60
0.0
60
2.5
60
5.0
60
7.5
Temperature MIXED
![Page 141: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/141.jpg)
141
Check result
![Page 142: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/142.jpg)
142
Check result
Select Reactor Length column
Plot -> x-Axis variable
Select all other columns
Plot -> y-Axis variable
Display Plot
![Page 143: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/143.jpg)
Check result Block B2 (RPlug) Profiles Process Stream
Reactor length MIXED meter
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
0.0
50
.10
.15
0.2
0.2
50
.30
.35
0.4
0.4
50
.5
Mole fraction MIXED CO
Mole fraction MIXED H2O
Mole fraction MIXED CO2
Mole fraction MIXED H2
![Page 144: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/144.jpg)
KINETICS REACTORS: RCSTR
Reaction :Exothermic & Irreversible
Aniline + Hydrogen Cyclohexylamine (CHA)
C6H7N + 3H2 C6H13N
![Page 145: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/145.jpg)
Reactor Conditions
Reactor :
Reactor
condition
Reactor type
Reactor liquid level
595 psi
250 F
1200 ft3
Temperature
Volume
Vertical cylindrical vessel
80%
Pressure
![Page 146: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/146.jpg)
Reactor Conditions Input
![Page 147: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/147.jpg)
Reaction Kinetics
CHA R A HR kV C C
8
0 10k
0 exp( )Ek kRT
3lbmole
ft
Reaction rate :
Where
VR: reactor volume
CA: concentration of Aniline
CH: concentration of Hydrogen
• Reaction kinetics :
Where
E : activity energy
T : temperature (R) 2000 BtuE
lbmole
3lbmole
ft
3ft
![Page 148: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/148.jpg)
Reaction Kinetics Input
![Page 149: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/149.jpg)
Reaction Kinetics Input
![Page 150: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/150.jpg)
Reaction Kinetics Input
![Page 151: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/151.jpg)
Feeds Conditions
1100 lbmolhr1400 lbmolhr
Two fresh feed stream :
Aniline feed Hydrogen feed
mole rate
temperature
pressure
100 F 100 F
650 psia 650 psia
![Page 152: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/152.jpg)
Feeds Conditions
![Page 153: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/153.jpg)
153
Check result
(1) Compare the conversion between RSTOIC and RCSTR.
(2) Compare the net duty inside the RSTOIC and RCSTR Question:
![Page 154: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/154.jpg)
154
Introduction to Aspen Plus
Part 6: Running simulation
Distillation Process
(DSTWU, RADFRAC)
![Page 155: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/155.jpg)
1
2
39
Saturated Feed
P=1.2atm
F=100 kmol/hr
zwater=0.5
zHAc=0.5
xwater=0.99
xHAc=0.99
40
20
Distillation Separation
• There are two degrees of freedom to manipulate distillate composition and bottoms composition to manipulate the distillate and bottoms compositions.
• If the feed condition and the number of stages are given, how much of RR and QR are required to achieve the specification.
RR ?
QR ?
![Page 156: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/156.jpg)
Distillation Separation Example :
A mixture of benzene and toluene containing 40 mol% benzene is to be separated to dive a product containing 90 mol% benzene at the top, and no more than 10% benzene in bottom product. The feed enters the column as saturated liquid, and the vapor leaving the column which is condensed but not cooled, provide reflux and product. It is proposed to operate the unit with a reflux ratio of 3 kmol/kmol product. Please find:
(1) The number of theoretical plates.
(2) The position of the entry.
(Problem is taken from Coulson & Richardson’s Chemical
Engineering, vol 2, Ex 11.7, p.564)
![Page 157: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/157.jpg)
1. By what you learned in Material balance and unit operation
1
Saturated Feed
P=100 Kpa
F=100 kmol/hr
xben=0.4
xtol=0.6
xben=0.9
xben<0.1
n
From Overall Material Balance:
100 = D+B
From Benzene Balance:
100*0.4 = 0.9 * D+ 0.1* B
Thus, D=37.5 and B=62.5.
37.5
62.5
![Page 158: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/158.jpg)
1. By what you learned in Material balance and unit operation
From thermodynamic phase equilibrium, and the calculation of operating line:
We can get the number of theoretical plate to be 7.
![Page 159: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/159.jpg)
2. By the shortcut method in Aspen Plus (DISTWU) (Add components)
Built in the components
![Page 160: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/160.jpg)
2. By the shortcut method in Aspen Plus (DISTWU) (Select property method)
Select NRTL
![Page 161: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/161.jpg)
2. By the shortcut method in Aspen Plus (DISTWU) (Select property method)
Check the binary parameters
![Page 162: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/162.jpg)
2. By the shortcut method in Aspen Plus (DSTWU)
Add the unit “DSTWU”
The red arrows are the required material stream!
![Page 163: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/163.jpg)
2. By the shortcut method in Aspen Plus (DSTWU)
Connect the required material stream
![Page 164: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/164.jpg)
2. By the shortcut method in Aspen Plus (DSTWU)
“Feed1” Stream specification
![Page 165: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/165.jpg)
2. By the shortcut method in Aspen Plus (Column Specification)
From the problem Assume no pressure drop
Inside the column
![Page 166: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/166.jpg)
2. By the shortcut method in Aspen Plus (Column Specification)
Light Key recovery
= (mol of light component in distillate) /
(mol of light component in feed)
= (37.5*0.9)/(100*0.4)
= 0.84375
![Page 167: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/167.jpg)
2. By the shortcut method in Aspen Plus (Column Specification)
Heavy Key recovery
= (mol of heavy component in distillate)
/ (mol of heavy component in feed)
= (37.5*0.1)/(100*0.6)
= 0.0625
![Page 168: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/168.jpg)
2. By the shortcut method in Aspen Plus (Column Specification)
Get results by varying the
number of stages. (Initial
Guess)
![Page 169: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/169.jpg)
2. By the shortcut method in Aspen Plus (DSTWU)
RUN THE SIMULATION
![Page 170: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/170.jpg)
2. By the shortcut method in Aspen Plus (Stream Results)
Click right button on the unit, and select “Stream
Results”
![Page 171: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/171.jpg)
2. By the shortcut method in Aspen Plus (Stream Results)
The required product
quality
![Page 172: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/172.jpg)
2. By the shortcut method in Aspen Plus (RR vs number of stage)
For RR=3, at least 7
theoretical stages are
required.
![Page 173: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/173.jpg)
3. More rigorous method in Aspen Plus (RADFRAC)
Add the unit “RADFRAC”
The red arrows are the required material stream!
![Page 174: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/174.jpg)
3. More rigorous method in Aspen Plus (RADFRAC)
Connect the required material stream
![Page 175: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/175.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Feed Specification)
Same as Case 2
![Page 176: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/176.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Specification)
Double click left button on the unit….
![Page 177: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/177.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Specification)
RR=3 from the problem, distillate rate = 37.5
(kmol/h) from previous calculation
7 stages from previous
calculation.
![Page 178: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/178.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Specification)
Specify the feed stage.
![Page 179: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/179.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Specification)
Specify the pressure at the top of column
![Page 180: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/180.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Calculation of tray size—Tray Sizing)
![Page 181: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/181.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Calculation of tray size—Tray Sizing)
*Calculation from 2th tray from the top to
2th tray from the bottom. (WHY??)
*Select a tray type.
![Page 182: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/182.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Pressure drop calculation– Tray Rating)
![Page 183: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/183.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Pressure drop calculation– Tray Rating)
*Calculation from 2th tray from the top to
2th tray from the bottom. (WHY??)
*Initial guess of the tray size
![Page 184: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/184.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Pressure drop calculation– Tray Rating)
![Page 185: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/185.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Stream Results)
Click right button on the unit, and select “Stream
Results”
![Page 186: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/186.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Stream Results)
Different from the shorcut method.
(WHY??)
![Page 187: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/187.jpg)
187
Introduction to Aspen Plus
Part 7: Running simulation
(Additional)
Design, spec, and vary in RADFRAC
![Page 188: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/188.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
![Page 189: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/189.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
What do we want??
--- 90% Benzene at top.
Select “Mole Purity”…
![Page 190: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/190.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
What do we want??
--- 90% Benzene at top.
Select “Mole Purity”…
And the target is 0.9.
![Page 191: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/191.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Select “Benzene”
![Page 192: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/192.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Select the distillate stream
![Page 193: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/193.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Add a Vary
(1 Design Spec 1 Vary)
![Page 194: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/194.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Varying Reflux ratio to
reach the design target.
![Page 195: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/195.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Specify the varying range.
(Should contain the initial value)
![Page 196: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/196.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
2nd Design Spec
![Page 197: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/197.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
What do we want??
--- 10% Benzene at bot.
Select “Mole Purity”…
![Page 198: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/198.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
What do we want??
--- 10% Benzene at bot.
Select “Mole Purity”…
And the target is 0.1.
![Page 199: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/199.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Select the Benzene
![Page 200: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/200.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Select the bottom stream
![Page 201: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/201.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
2nd Vary
![Page 202: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/202.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
Varying distillate rate to
reach the design target.
Specify the varying range.
(Should contain the initial value)
![Page 203: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/203.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Design , Spec and Vary)
RUN THE SIMULATION,
and click right button on
the unit, select “Stream
results”
![Page 204: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/204.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Stream Results)
The required product
quality
![Page 205: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/205.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Results--top)
Calculated Reflux Ratio = 6.14
(from problem: 3)
![Page 206: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/206.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Column Results--bottom)
The required heat duty for
separation is 2341.8 (KW)
![Page 207: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/207.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Profile Inside the Column)
T : Temperature
P : Pressure
F : Liquid and vapor flow rate.
Q: Heat Duty
![Page 208: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/208.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Profile Inside the Column)
You can select the vapor or
liquid composition profile.
(also in mole or mass basis)
![Page 209: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/209.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Plotting Temp. Profile)
Select the column “Stage”
Click “Plot”
Select “X-axis variable”
![Page 210: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/210.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Plotting Temp. Profile)
Select the column “Temp.”
Click “Plot”
Select “Y-axis variable”
![Page 211: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/211.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Plotting Temp. Profile)
Then, select “Display
Plot”
![Page 212: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/212.jpg)
3. More rigorous method in Aspen Plus (RADFRAC) (Plotting Temp. Profile)
![Page 213: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/213.jpg)
Exercise Example:
Typically, 90 mol% product purity is not enough for a product to sale. In the same problem, assume the number of stages increase to 10. Try the following exercises:
(1) Is it possible to separate the feed to 95 mol% of benzene in the distillate, and less than 5% of benzene in the bottom product? If yes, what is the RR and Qreb?
(2) As in (1), is it possible to separate the feed to 99 mol% of benzene in the distillate, and less than 1% of benzene in the bottom product? If yes, what is the RR and Qreb?
(3) As in (2), if no, how many number of stages is required to reach this target?
(Hint: Use design, spec, and vary to do this problem)
![Page 214: Introduction to Aspen Plus --2014](https://reader033.vdocuments.pub/reader033/viewer/2022052215/55cf96ab550346d0338d0460/html5/thumbnails/214.jpg)
214
Thanks for your attention!
PSE Laboratory Department of Chemical Engineering
Nation Taiwan University (綜合 room 402)