basic simulation using hysys - m2

5/23/2018 Basic Simulation Using Hysys - m2

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MODULE 2

Propane Refrigeration Loop


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Gii thiu nhim v

H thng lm lnh c s dng rng ritrong cng ngh ho du v ch bin kh

c s dng trong qu trnh lm lnh

kh t c nhit im sngcn thit v sn xut cc sn phmlng.

Nhim v: Xy dng, chy m phng,

phn tch v iu chnh cc thng s caPropane Refigeration Loop. Chuynthnh template s dng trong cccase khc


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Mc tiu kha hc

To v kt ni cc Unit xy dnghon chnh Flowsheet

Thao tc vi Flowsheet

Hiu qu trnh tnh backward forwardtrong HYSYS

Chuyn case m phng thnh template


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Yu cu ti thiu

Bit cch nh ngha v to Fluid Package

To Stream

Kho st Workbook


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Process Overview


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Xy dng case m phng

1. To case m phng mi2. nh ngha Fluid Package: C3, Peng

Robinson

3. To cc Stream:

Tn 1 3

Vapor Fraction 0.0 1.0

Nhit 50 oC -20 oC

Thnh phn 100% C3

p sut ca Stream 1 l bao nhiu:_______?


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To Unit trong Flowsheet

Cc cch to Unit trong Flowsheet:

Menu Bar Flowsheet/Add Operation

hoc Workbook Workbook/UnitOps v Add

UnitOps

Object

Palette

Flowsheet/ Open Object

Palette hoc FPD/Object

Palette

Dng chut phi ko v thbiu tng Unit t ObjectPalette vo PFD


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Unit trong PRL

Propane Refrigeration Loop c 4 units:1. Valve

2. Chiller

3. Compressor

4. Condenser

S dng cc phng thc khc nhau

to Unit trong Flowsheet



To J-T Valve

J-T Valve s dng model Valve, u vo J-TValve t Condenser trng thi Buble point

Bm

Chn Valve trong Available Unit

Nhn Add



To J-T Valve

Trong phn Connections, in cc thng tinnh trong hnh di y:

Ghi ch: Trong phn Inlet/Outlet c th s dng drop down box chncc Stream c sn



B sung Chiller

Thit b Chiller s dng model Heater trong HYSYS. ura ca dng cng ngh trng thi Dew point

S dng Workbook/Unit Ops/Add Unit Ops



B sung Chiller

Chn Heat Transfer Equiment trong nhm Categories Chn Heater trong nhm Available Unit Operations

Bm nt Add



B sung Chiller

Trong phn Connections in cc thng tin nh hnh diy:



B sung Chiller

Trong phn Parameters xc nh chnh p qua Chiller l7 kPa, cng sut 1.00 e+06 kJ/h:

Lu lng ca dng Propane l:_______? St p qua J-T valve l:_______?

Nhit ca stream 2 l:_______?



Thinking???

Gii thch ti sao HYSYS tnh c tt ccc thng s cn li???

Forward composition stream 3

Calculate pressure of stream 3

Backward pressure to stream 2

Calculate stream 2s temperature

Forward temperature to Chiller Trial calculation flowrate



B sung my nn

Bm : hin th Object Palette Nhn kp vo biu tng Compressor Trong phn connections in cc thng tin sau:



B sung my nn

Trong phn parameters in cc thng s nh hnh sau:



B sung Condenser

Nm gia Compressor v Valve cnhim v a dng C3 t trng thi khv trng thi lng.

S dng model Cooler To bng phng php ko & th (Drag

n Drop)

1. Bm vo biu tng Cooler trn ObjectPalette

2. Ko vo trong Flowsheet v th vo v trmun t



Kt ni Unit - Stream

Attach Mode 1. Nhn vo nt Attach Mode

2. Khi di chuyn con tr ti Unit, cc im ktni s hin th mu xanh dng m

3. Trn Stream 2 im kt ni In, Out

4. Ko im kt ni Out ca Stream ti imFeed Stream ca Unit

5. Ko im kt ni In ca Stream ti imProduct ca Unit

Phm Ctrl 1. Nhn v gi Ctrl trong khi di chuyn con trti Stream, HYSYS t ng chuyn sangAttach mode.

2. Thc hin nh phn Attach mode

3. Khi th Ctrl, HYSYS t ng tt ch Attach Mode



B sung Condenser

Trong phn Parameters xc nh Delta P quaCondenser l 35 kPa

Cng sut ca my nn (HP) l:_______?



S dng PFD

Object Inspection: bm phm phi trnbiu tng ca stream, unit

S dng :

To bng Properties

Xoay biu tng

Thay i tn

In n



1 s Object Inspections

PFD Unit Operations Streams



Chnh sa PFD

To tiu : Propane Refrigeration Loop

To Workbook Table cho cc MaterialStream

To Table cho dng Stream 4 B sung thng tin v Unit (Object

Inspection/Show Table)



Lu case thnh template

Template l 1 Flowsheet hon chnhc lu trn a c th ni vi 1Flowsheet khc.

Thng thng, template l 1 module canh my hoc 1 cm cc thit b cngngh gn vi nhau.

Sau khi lu, template c th c

nhng vo 1 Flowsheet khc, 1 casekhc di dng Sub-Flowsheet. C th c nhng vo bt k

Flowsheet no, khng gii hn v s

lng


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Lu case thnh template

Xo gi tr Chiller Duty

T menu Simulation chn Main Properties

Nhn Convert to Template

Chn Yes, sau No khng lu thay i

Lu template vi tn C3Loop.tpl


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In kt qu

Trong Hysys, c th in kt qu ca Unit t: Thanh menu

Object Inspection ca Unit

Report Manager

MenuPrint:

Print Snapshot: In hnh nh ca ca s mnhnh ang chn


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In kt qu

Object Inspection: Chn Print Datasheet Report Manager:

T Menu chn Tools, Report truy cp Report Manager

Chn Createsau Insert Datasheet


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Tnh ton vi case m phng

Bi tp 1: Design & Rating Cng sut Compressor l 250 hp, ang vn hnh mc

90% cng sut v 72% hiu sut. Tnh cng sut lm mtca Chiller ?

Khi nng cng sut ca Chiller ln 1.5 MMBTU/hr khi khng

thay i Compressor th nhit Chiller thay i nh thno ?

Bi tp 2: Thnh phn cht lm mt Ni cung cp Propane cho bit phi s dng loi 95%

Propane, 5% Ethane. Hy nh gi nhng nh hng (nuc) i vi h thng ban u (khi Chill-Q=1e6kJ/h)

Base case 100% C3 New case 95% C3

Flow, kgmole/hr 107.9

Condenser Q, kJ/hr 1.587e6

Compressor Q, kJ/hr 5.866e5


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Th thch: Economizer

Thay i thnh h thng nn 2 cp bng cch thm vo thit b tch Tng cng sut tiu hao cho qu trnh nn l bao nhiu?


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Th thch: Economizer

Cc thng s ca h thng:

Thit b Thng s

Stream 1 T = 50oC

Vf = 0.0

Chiller Delta P = 7 kPa

Q = 1.0 e+06 kJ/h

Stream 3 T = -20oC

Vf = 1.0Stream 4 P = 625 kPa

Mixer Equalizer All Pressure

Condenser Delta P = 35 kPa


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Th thch: Economizer

Dng Case Study tm p sut ti u caStream 4 cng sut nn l nh nht

basic simulation using hysys - m2

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