att475 0 sizing
TRANSCRIPT
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Sizing training course
'3447 89:; :6*,<:= 3>?% Mohammad Behzadi
!"#%& @A=$ :com.mihanblog.mblastsavior .www
B95$-CBD, EFH :[email protected]
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Design CriteriaDesign Criteria
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DP=OP*(1+A/100)+B
Pressure Design Criteria
DT=design PressureOT=Operating Pressure
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DT=OT*(1+A/100)+BDT=design temperature
OT=Operating temperature
Temperature Design Criteria
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+F.GC< 8 ENGINNERING FLOWSHEET
ENGINEERING LINE DIAGRAM
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Separators/AccumulatorsSeparators/Accumulators
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Methods of supporting vessels.
(a) Saddle supports for
horizontal vessels, usually of concrete.
(b) Bracket or lug supports
resting on legs, for either vertical or horizontal vessels.(c) Bracket or lug supports resting on steel structures,
for either vertical or
horizontal vessels.
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(d) Straight skirt support for towers and other
tall vessels; the bearing plate is bolted to the
foundation.
(e) Flared skirt for towers and other tall vessels,
used when the required
number of bolts is such that the bolt spacing
becomes less than the
desirable 2 ft.
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Principles of entrainment separation and some commercial types of equipment.
(a) Basic principles of entrainment separating
equipment: (i) change of direction; (ii) impingement on a baffle; (iii) tangential inlet
resulting in centrifugal force.
(b) Wire or fiber mesh pad, typical installations as in Figure B.7.
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(c) A separator combining impingement and centrifugal force
(d)Equipment with impingement and change of direction
(e) Multiple zig-zag baffle arrangement
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FRACTIONATOR REFLUX DRUMS
Commonly their orientation is horizontal.
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Heat ExchangersHeat Exchangers
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Rod baffles for minimizing tube vibrations;
each tube is supported by four rods.
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Standards of Tubular
Exchanger
Manufacturers
Association (TEMA).
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PipingPiping
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ScheduleSchedule number(SNnumber(SN))
!4 BS 3351
T=Pd/(20 sd+P)
P(bar) d(mm) s=N/mm2 2C.,iTf Y./" (" 2`<'j k#C
Schedule number = 1000 P/S,
where
P = internal pressure, psig
S = allowable working stress in psi.
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PIPE SUPPORT
PIPERACK
PIPESLIPPER
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"(<" (8rA/ *WR$ *f'N .? (.3) *)<
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[!#0.P
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Ex a m p l e : heat exchanger tube pressure
loss(water)
W=10 kg/s
L=3.2 m
Id=.75 in
(lb=453.6 gr)
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PUMP & CompressorPUMP & Compressor
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Some types of centrifugal pumps. (a) Single-stage, single suction volute pump. (b) Flow path in a volute
pump. (c) Double suction for minimizing axial thrust. (d) Horizontally split casing for ease of maintenance.
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Double-acting, two-stage reciprocating compressor with
water-cooled jacket and intercooler
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Impellers
The three common types of impellers thatimpart the
1. Fully enclosed-used for high head, highpressure applications.
2. Semi-enclosed-used for general purposeapplications, has open vane tips at entranceto break up suspended particles and preventclogging.
3. Open-used for low heads, suspendedsolids applications,
very small flows.
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e) An external gear pump; characteristics are in Figure 7.8(c). (f) Internal gearpump; the outer gear is driven, the inner one follows
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PUMP Horsepower
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PUMP Efficiency
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PUMP NPSHA
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PUMP NPSHR
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PUMP NPSHA V.~/ o-:
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V.~/ u-:PUMP NPSHA
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V.~/ v-:PUMP NPSHA For Pressured Drum
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Centrifugal pump impeller
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Compressor selection
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FHP
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Brake Power
The brake horsepower is considered to be the
pump power input
BHP = FHP / Eff pump
Electricity
The electric horsepower
(EHP) =BHP/ Eff motor
FHP=EHP* Eff pump* Eff motor
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valvevalve
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valvevalve
Block(shut-off) (ball,plug,gate,butterfly)
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Control(globe)
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Ball ValveBall Valve
Full Bore
!O,%.P 8 F.? PSV
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(d) A pressure relief valve, in which the plug is raised on overpressure. (e) A
control valve with a single port. (f) A double-port, reverse-acting control valve.
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(h) Relation between fractional opening and fractional flow of three modes of valve openings.
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Check valveCheck valve
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Control ValveControl Valve
Globe
Butterfly )(7N'ST4 Y"8(8 8 >.L ',R/ (
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Distillation ColumnsDistillation Columns
TowersTowers
FractionatorsFractionators
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!##% &')*!##% &')*::+"-.)0 !132+"-.)0 !132 122122(a) Some kinds of bubblecaps (b) Two kinds of valves for trays.
(c) Vapor directing slot on a Linde sieve tray (d) Vapor flow through a bubblecap.
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(e) Sieve tray phenomena and pressure relations; h, is the head in the downcomer, hl is the equivalent head of clear
liquid on the tray, hf is the visible height of froth on the tray, and ht is the pressure drop across the tray
(f) Assembly of and action of vapor and liquid on a bubblecap tray.
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a) Raschig ring; (b) partition or Lessing ring; (c) double spiral ring; (d) metal pall ring;
(e)plastic pall ring; (f) ceramic Berl saddle (g) ceramic intalox saddle
(h) plastic intalox saddle (i) metal intalox saddle (j) Tellerette
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(k) plastic tripak (l) metal tripak (m) wood grid; (n) section through expanded metal packing;
(0) sections of expanded metal packings placed alternatively at right angles (p) GEM
structured packing
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(a) Example packed column with a variety of internals(b) Packing support and redistributor assembly.
(c) Trough-type liquid distributor.
(d) Perforated pipe distributor.
(e)Rosette redistributor for small towers.
(f) Hold-down plate, particularly for low density
packing.
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