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Session 3.2.

Cc tin chca HYSYS

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Revise

Cut Phnmole

C1 0.0724

C2 0.1288

C3 0.2765

i-C4 0.1895

n-C4 0.1145

i-C5 0.0648

n-C5 0.0548

C6 0.0329

C7+ 0.0658

Nhp cc thnh phn ca dng

Molar Flow: 100 kgmol/h

Name: Feed

Bn tham s cn khai bo cho dng nguyn liu l:Composition

Flowrate

Hai trong s cc tham s sau:TemperaturePressure

Vapor/phase fraction

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Tnh ton Flash

Tnh ton thng s th 3: Nhp thnh phn ca dng Nhp hai trong s cc thng s l nhit

, p sut hoc phn hi Tnh ton nhit hay p sut im

sng(dew point): t, P Phn hi (Vapour Fraction) = 1.0 Nhp p sut hay nhit ca dng tnh ton nhit im bt hay p

sut im bt(bubble point) Phn hi l 0.0

Nhp p sut hay nhit ca dngCh mu ch ca cc gi tr trong Hysys

Mu xanh: do ngi nhp,

Mu en do chng trnh t tnh ton,

Mu : nhng gi tr do Hysys mc nh v c th

thay i bi ngi dng

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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others

Tnh ton Flash

P = 4000 kPa, nhit im bt (bubble point) = ?

P = 4000 kPa, nhit im sng (dew point) = ?

P = 4000 kPa, T = 1000C, phn hi (vapour fraction)= ?

Dng chut resize li ca s xem tnh cht ca dng

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Cc tin ch km theo

Phng php Thc hin

S dng thanh

Menu

T mc Tools trn thanh Menu, la chn

UtilitiesHocnCtrl U.Cashinthcc tinch sxuthin.

T ca s hin th

tnh chtdng

1.Mcashinthtnh chtdng.

2.Trn mcAttachments, kch vo mcUtilities.3.Kch vo nt Create.Cashinthcc tinch sxuthin.

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Tin ch Envelope

Mc ch:kim tra cc mi quan h gia cc i lng cng vi lng khuch (P, V, T, H, S). Tin ch Envelope c th a rac th ca cc mi quan h sau:

p sut nhit (P-T)

p sut th tch (P-V)p sut Enthalpy (P-H)p sut Entropy (P-S)Nhit Th tch (P-V)Nhit Enthalpy (T-H)Nhit Entropy (T-S)

Yu cu: s dng c tin ch ny, yu cu ti thiu l phi bitc thnh phn ca dng, k c khi dng ch c mt thnh phn

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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others

Tin ch Envelope

Cch truy cp vo tin ch:Utilities (Ctrl+U):La chn Envelope. Kchvo nt Add Utility. Ca s hin th tin chEnvelope xut hin. Chn dng Feed trong

mc Select StreamMc Design s ch ra cc gi tr ti hn vcc gi tr ln nht cho envelope.

Nhit v p sut ti hn Tc, Pc (cr i t ical temperature and pressure)cho dng Feed l bao nhiu?

Nhit v p sut ln nht (Cr icondentherm and Cr icon denbar)cho dng Feed l bao nhiu?

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Gin P-V cho h mt cu t

Nhit ti hnl nhit mti khi tng p sut ln dngkh khng th b ha lng

Ti im ti hn C(Tc, Pc), kh rtm c nhng cha phi l lngMi cht c mt im ti hn ring.T Tc, Pcta c th tnh c nhit rt gn Trv p sut rt gn Pr theocng thc:

C

LV

R

C

LV

R

P

PP

TTT

Vi mt cht tinh khit

C: im ti hnT: im 3 pha

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Gin P-V cho h mt cu t

T = constant

Liquid & gas

Gas

G (Bubble point): im mti lng kh cn nhrt nh v bt u chuynsang trng thi lng

F (Dew point): im m ti lng lng cn nh rtnh v bt u chuynsang trng thi kh

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Gin P-V cho h hai cu t

Khi nim v im ti hndng cho h mt cu tkhng p dng c vih nhiu cu t. Trong hhai cu t, pha lng v kh

c th cng tn ti ti psut v nhit trn imti hn.Vi h nhiu cu t, imti hn c nh ngha lim m ti tt c cc

tnh cht ca lng v kh lging nhau

Liquid

Gas

Pm

Tm

Pm: cricondenbar

Tm: cricondentherm

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Tin ch Envelope

Chuyn sang mcPerformancehin th envelope.

Kch vo mcTablehinth

dliuenvelope dngbng.(Cc gi trdng s c th ccopy t Hysys sang MicrosoftExcel bng vic s dng lnhcopy, Ctrl C, v sau s dnglnhdn, Ctrl V.

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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others

Nhit im bt (bubble point) 4000 kPa?

Nhit im sng (dew point) 4000 kPa?

Nhit ca dng Feed vi 50% lng cht phahi (50% quality) 5000 kPa?

Nhit kt tinh nc (hydrate) 5000 kPa?

Tin ch Envelope

Phng php ni suy???So snh kt qu bubble point v dew point vikt qu tnh ton phn trc

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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others

Tin ch Property TableMc ch: Tin ch cabng tnh cht l cho phpchng ta kim tra cc ditnh cht trn mt khongiukintheo cdngbng

v dng th. Tin ch nys tnh ton cc bin phthuc nu ngi s dngcho bitcc khonghay ccgi trcabinclp.

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Tin ch Property Table1. Utilities (Ctrl+U):chn Property Table>Add2. Kch vo nt Select Stream v la chn dng

Feed>OK

3. The first Independent Variable: Pressure

Thay i phng thc bin i p sut l State,tc l cc gi tr c cho trc.

Trong khung nhp cc gi tr 2500, 5000, 7500, v9000 kPa.

4. The second Independent Variable: Temperature

Thay i bin di v bin trn ln lt l 00C(320F) v 1000C (2120F). S lng cc im tngmc nh l 10 im.

4. Chuyn sang mc Dep. Prop>Add v chn lnlt cc tnh cht sau: Mass Density, ThermalConductivity, Specific Gravity

5. Kch vo nt Caculate to ra bng tnh cht.6. Kim tra kt qu ca bng tnh cht theo c dng

th v dng bng trong mc Performance.

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Phn tch kt qu dng

Kch p vo dng Feed, ko bng rng ra cho n khi nhn ctt c cc phaCc thng tin chi tit ca dng c th thy mc Conditions,Properties

M Workbook bng biu tng c trn thanh Toolbar. RC>Setup

Material stream>add>Stream Rename thnh Other props Variable: delete ht cc bin mc nh, thm Cp/Cv, Nhit bay hi

khi lng (Mass Heat of Vapourization), Enthalpy phn t gamth tch (Molar Enthalpy)

ng ca s ny khi chng ta hon thnh v quay tr liWorkbook.

Workbook by gi s bao gm c mc Other Prop.Mc ny ch ra cc gi tr ca Cp/Cv, Nhit bay hi khi lng, vEnthalpy phn t gam th tch.

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Cp/Cv

Nhit dung ring(Specific heat)l lng nhit cn thit unnng mt mol cht ln 1 Nhit dung ring ng tch CvNhit dung ring ng p Cp

Cp/Cv, k, specific heat ratio

k = Enthalpy H/Internal energy UEnthalpy H = Cp * TInternal energy U = Cv * TSpecific heat ratio(k) k = Cp/Cv

Specific heat and Gas constantRR = Cp - Cv

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Mass Heat of Vapourization

Nhit bay hi khi lng (Mass Heat ofVapourization) l lng nhit cn thit chuynha 1g lng thnh kh

VD: Nhit bay hi khi lng ca nc l: 2260J/g

Bit c i lng ny ta c th tnh ton xem cnbao nhiu lng nhit ha hi hon ton mtkhi lng nc bit trc

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We learn 10% of what we read; 20% of what we hear; 30% of what we see; 50% of what we see and hear;70% of what we discuss; 80% of what we experience; 95% of what we teach others

Molar Enthalpy Hm

Molar Enthalpy l lng nhit chuyn ha trongphn ng trn mt mol

n

CHm

C: specific heat

AQdU

)()( 1122 pVUpVUQp

12 HH

Nguyn l 1:

T suy ra:

U: ni nng ca hQ: nhit sinh ra khithc hin mt cng A

H: th nng ca hH: bin thinEnthalpy: din t s binthin th nng nhit ngca h, thng c dng tnh cng c chca mt"h nhit ng kn" di mt

p sut khng i.

U, H: hm trng thiQ, A: hm qu trnh

http://vi.wikipedia.org/wiki/C%C3%B4nghttp://vi.wikipedia.org/wiki/C%C3%B4ng

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In d liu ca dngv ca Workbook

Trong Hysys chng ta c kh nng in cc d liu ca dng, cc qu trnhhot ng, v cc Workbook.

In cc d liu trong Workbook

1. M Workbook

2. Kch chut phi trn thanh tiu ca Workbook.3. La chn Print Datasheet. Ca s ta la chn cc khi d liu

cn in s xut hin.

4. T danh sch chng ta c th in, hoc xem trc bn in ca bt kd liu no.

In mt d liu dng ring bit in d liu cho mt dng ring bit, chng ta phi nhp chut philn thanh tiu ca dng cn in trong Workbook, cc bc cn lithc hin nh i vi vic in Workbook trnh by trn.

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Task 3.2.1

Nhm:

c v dch ti liu 3.2.1. Utilities

Yu cu: mi tnh cht cn phi a ra cnh ngha, mc ch cc thng s m chngtrnh a ra (Wh-question: what, how)

Hn np:

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Learning outcome in

session 3.2

Thnh tho cc thao tc thm dng, nhpthnh phn ca dng

Hiu c cch thm mt Utilities, thc hnhmt s cc tin ch tnh ton tnh cht chodng: phase envelope, table property

n li mt s kin thc c s Ha L Phn tch v la chn in kt qu ca dng v

workbook

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Homework

Hy thc hin tnh ton flash P-T cho dng GasWell2. t p sut l 7500 kPav nhit l 100C. Phn hi l bao nhiu?Thc hin mt tnh ton im sng cho dng GasWell2. t p sut l 7500kPa. Nhit im sng l bao nhiu?

Thc hin mt tnh ton im bt cho dng GasWell2. Nhp p sut l 7500kPa. Nhit im bt l bao nhiu?S dng tin ch Envelope xc nh Tc, Pc, Tr, Pr cho dng GasWell2. T tnh h s Z ca dng (h s nn dc trng cho kh thc). Hin th d liuenvelope di dng bng trong Excel.

Tr, Pr (nhit v p sut rt gn, reduced)Tr = T lm vic/TcPr = P lm vic/Pc

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Homework

SdngEnvelopePhasetm cc imsau:imtihncho GasWell1:p suttihncho GasWell1:Nhitimbtcho GasWell3 6000 kPa:Nhitimsngcho GasWell1 4000 kPa:NhitcaGasWell1 vi50% lngchtpha hi8000 kPa:Nhitkttinh nccho GasWell2 7500 kPa

SdngWorkbook tm cc gi trsau:Nhitimbtcho GasWell3 6000 kPaNhitimsngcho GasWell1 4000 kPaNhitcaGasWell1 vi50% lngchtpha hi8000 kPaSdngtinch HydrateFormationtm nhitkttinh nccho GasWell1 v GasWell2

Dng p sut,kPa (psia) Nhitkttinh nc

GasWell1 5000 (725) 21.1253

GasWell1 7500 (1090) 23.0292

GasWell2 5000 (725) 20.6811

GasWell2 7500 (1090) 22.6107