hysys nhóm 1

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Thit km hnh thu hi CO2 tkhl thi Lhdk52

2

Ni dung chnh:

Chng 1 : tng quan qu trnh hp th

Chng 2 : c sthit ktnh ton

Chng 3: m phng qu trnh thu hi CO2 tkh l thi sdng phnmm Hysys

Chng 4: phlc

Ti liu tham kho

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Chng 1: tng quan qu trnh hp th

1.1Mc ch

Thit kc m hnh ti u thu hi kh CO2tkh l thi v loi bbt CO2

trong cc sn phm du mv trong cc mkh c nng CO2 cao p dng

vo thc tsn xut.

1.2. ngha ca vic loi CO2

Carbon dioxide l kh c kh nhiu trong cc sn phm du mv trong cc kh l

thi. S c mt ca CO2 trong cc sn phm du mgy kh khn cho vic vn

chuyn v tng cha do gy tng thtch v gy n mn thit b. Chnh v vy vic

loi kh CO2 l 1 phn on khng ththiu trong qu trnh chbin du m.

Trong nhiu m kh ca Vit Nam c hm lng CO2 qu cao (trn 70%) nn chac cng ngh no khai thc c cc m kh ny. Cho nn cn loi bt CO2trong cc m kh t nng CO2 trong mc cho php c th khai thc c.

Nh chng ta bit: Kh CO2 l nguyn nhn chnh gy hiu ng nh knh,chim 50% trong c cu cc cht kh gy hiu ng nh knh lm tri t ngy cngnng ln.

Hn na, CO2l nguyn nhn gy nhiu tai nn cht ngi trn thgii cng nh

Vit Nam , ctrong i sng cng nh trong sn xut.Tuy CO2l mt cht khng

gy c tnh vi con ngi nhng n c thl mt cht gy ngt n thun.

Bn cnh khi chng ta thu hi v tinh chc CO2th n li c nhiu ng dng

trong thc t:

c tnh c bit ca carbon dioxide l tnh tr v ha tan trong nc cao nn

CO2 l mt kh h tr l tng a dng trong cuc sng hng ngy v trong cng

ngh mi trng.

Trong cng ngh thc phm, CO2 c dng to gas cho nhiu thc ung, rthu dng trong vic iu ha nc ung v trung ha nc thi. th lng clm lnh hoc th rn ( kh), CO2 c s dng nh mt mi trng lm lnh

nhit -79 C.

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Lm lnh thc phm: c dng ging nh Nit lng, v ph hp nht chocc ng dng trn lnh s dng tuyt kh.

ng gi thc ung. Du phc hi tng cng: ha tan ca hydrocarbon lng c dng

lm tng s lu thng ca du bng cch gim nht, tng th tch v kchthch s lu thng.CO2l mt sn phm tt yu ca cc nh my chbindu.

Sn: carbon dioxide siu hn c s dng nh mt cht pha lng dngtrong sn phun, lm gim 80% dung mi hu c.

Chit xut thc phm: supercritical carbon dioxide c s dng trongvicchit xut mu v hng v trong thc phm nhm loi b du v cht

bo. Tch v chit xut trong cng nghip: carbon dioxide siu hn c dng

trong cc qui trnh dc phm v ha cht, hoc l cht thay th cho dung

mi gc hydrocarbon trong vic ty nhn kim loi. Tinh ch v nung chy kim loi: dng trong vic khun v c, tuyt

carbon dioxide c dng lm gim s hnh thnh oxide st. X l nc. X l cht thi.

1.3.s cng ngh:

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Hnh 1: S dng tng quan ca mt quy trnh loi bCO2

1.4 c im qu trnh hp thMEA:

1.4.1 c im ca MEA

MEA c tnh bazo mnh nht so vi cc ankanolamin khc nn c

khnnghp thCO2mnh nht , dng loi bH2S v CO2rakhi hn hp kh.MEA c tnh n nh ha hc cao

MEA dti sinh

MEA c khnng phn ng cao

Cng nghv thit bn gin , bn cao khi vn hnh ng Dung dch MEA kh hp thcc hydrocacbon nn c khnng lm

tng hiu qusn xut lu hunh tcc kh axit lm sch bngMEA.

u im:

lm sch trit H2S v CO2

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n nh ha hc cao dti sinh cng nghn gin

nhc im:

mc bo ha ca dung dch thp khng loi c COS, CS2, HCN thut ton ln dn tng chi ph

1.4.2 qu trnh tng tc ca MEA vi CO2:Phng trnh phn ng:CO2 + HOCH2CH2 NH2 CO3(CH2CH2NH2)2 + H2O H= -1917 kJ/kg

Trong xy ra theo hai giai on

CO2 + 2RNH2+ H2O (RNH3)2CO3

CO2+ (RNH3)2CO3+ H2O 2RNH3HCO3

Chng 2 : c sthit ktnh ton:

Trong chng ny a ra cch tnh ton nhng thng sthit kca cc thit

bchnh trong s m phng . cc thit bc bn c tnh ton nh di y

2.1.Tnh ton cc thng sc bn ca thp hp thCO2 dng MEA

Bc 1:Cthha cc yu tu vo Nguyn liu :3-Fuel oil

Thnh phn kh nguyn liu: 3-Fuel oil vi thnh phn mol l:CO2 0,037,H2O 0,07, N2 0,893.

Nhit : 39,5oC , p sut :1,03at.

Hm lng CO2 trong kh u ra l : 0,00487%mol.

Cht hp thl dng Amine ngho 21-lean amine vi nhit l 40o

C, psut 1,01 at, lu lng khi lng l 3,6.10^6 kg/h.

Bc 2:Tnh p sut lm vic ca thp hp th

p sut lm vic ca thp hp th: P PCO2/b

Trong :

PCO2l p sut hi ring phn ca CO2 trong dung dch amin ngho ti nhitlm vic ca thp. C thc tnh theo phng trnh Antoine:

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Lg PCO2= AB/(T+C)

T l nhit lm vic ca thp l 40oC

A,B,C l 3 hsca pt tng ng vi amin MEA ln lt l 7,4; 1140,8; 236

PCO2= 0,018.10^5 pa.

b l hm lng ca CO2 cn li trong kh u ra (phn trm) l 0,487

P 0,037.10^ 5pa

Vy ta chn p sut lm vic ca thp nh l 1 at v yl 1,2 at.

Bc 3: tnh lu lng dng amin giu i ra y thp

mrich amin= mlean amin+ mCO2(hp th)

Trong : nCO2(h.th)= nCO2(fuel oil)nCO2(kh ra nh)=3543 kmol.

mrich amin = 3,7.10^6 kg/h.

Bc 4: tnh lu lng ca kh ngt ra nh thp

m(kh ra)= m(fuel oil)- mCO2(h.th)= 6,63.10^6 kg/h.

Bc 5: tnh nhit dng amin giu ra y thp T(da trn nh lut baot

ton nng lng Qthu= Qta).

Nhit ta : l nhit ta ra khi xy ra phn ng gia amin MEA v CO2

Qta= mCO2(h.th).qCO2

qCO2l nhit ta ra khi 1kg CO2 tc dng vi MEA v = 1917 kj/kg

Qta= 3.10^8 kJ.

Nhit thu vo bao g

m:

. Nhit un nng dng amin ngho tTvon nhit T

Q1= (namin.Mamin/C%amin).Cp(amin).( TTamin)

Trong : Cp(amin)= 1,48 (kj/kg.oC)

. Nhit un nng CO2 bhp th

Q2= nCO2(h.th).Cp(CO2).(T- Tfuel oil)

Trong : Cp(CO2)= 0,8778 (kj/kg.oC).

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. Nhit un nng CO2 c sn trong dng lean amin

Q3= nCO2(lean amin).Cp(CO2).(TTlean amin)

. Nhit tht thot ra bn ngoi: ly bng 5% nhit ta

Q4= 5%.Qta= 1,5.10^7 kJ

Qthu= Q1+ Q2+ Q3+ Q4.

Cho Qta= Qthuta tnh c nhit ca dng rich amin ra y thp l 46oC.

Bc 6: tnh sa l thuyt ca thp

Nlt= [ ln (1/q(A-1))/lnA] +1

Trong :

A l yu thp th: A= a(1 + R.r).(1-q)/(P1/P).

q = smol CO2 trong kh ra/ smol CO2 trong fuel oil = 0,13.

a l phn mol ca CO2 trong fuel oil = 0,037

R l smol amin/smol CO2 (ta chn R=3)

r l smol CO2/1mol amin = 0,03/1

P p sut lm bn trong thp =1,1.10^5 pa

P1 l p sut ring phn ca CO2 tnh theo pt Antoine = 0,018.10^5 pa

A = 1,64

Nlt= 6 a

Bc 7: sa thc ca thp

Nthc= Nlt/ trong l hiu sut a (chn = 0,35)

Nthc= 17 a.

Bc 8: tnh ng knh ca thp

D= 0,0114.[(0,1.Q.T)/(.P)]1/2

Trong : D ng knh thp(m)

Q lu lng dng fuel oil (m3/h)

T nhit dng fuel oil (oK)

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P p sut lm vic (Mpa)

vn tc tuyn tnh ca kh trong thp (chn = 0,13m/s)

D = 16 m.

Bc 9: tnh chiu cao thp

H = Nthc .d +h

d l khong cch gia cc a (chn d=0,5m)

h l chiu cao btr(gm chop trn v chop di chn h = 1,5m)

H= 10m.

Cc kt qutnh cng gn vi cc kt qum HYSIS tnh ra.

2.2. Tnh ton thp chng ct gii hp

Cn bng vt liu

1,529.105.= 6153 kmole/h

W = FP = 1,529.1056153 = 146746 kmole/h

Lch khng nhiu so vi s tnh ton ca HYSYS

Tnh ton Rmin

T s liu s tay ha cng tp 2 ta c gin lng hi ca hn hp cut. T gin ta xc nh c m, vy ta c:

= m = 0.075

Vy Rmin= 0.5714

M theo gi thit m phng trong HYSYS ta chn gi tr R = 0,6

= 1,28

1,28 l gi tr chp nhn c

2.3.Tnh ton thit btrao i nhit dng amin Giu / amin ngho:

Githit :

Hn hp i trong ng : dng amin nghoThnh phn hn hp:

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H2O: 0.855

CO2: 0.030

MEA: 0.115

T1: 120,2oC T2= 54

oC

P1: 700 KPa P2= 400 KPa

Lu lng hn hp : 3.496.106kg/h

Hn hp i ngoi ng : dng amin giuThnh phn hn hp:

H2O: 0.837

CO2: 0.053

MEA: 0.110

T1: 44.4oC T2= 110

oC

P1: 750 KPa P2= 450 KPa

Lu lng hn hp : 3.691.106kg/h

Tnh ton :

Vi dng amin ngho vo ng trao i nhit :

Khi lng phn ttrung bnh hn hp = 23.73

Lu lng mol = lu lng khi lng / khi lng phn ttrung bnh

= 3.496.106/ 23.73= 1.47.105kmol/h

Ta c ttrng trung bnh hn hp = 41.76

lu lng thtch dng amin ngho = 1.47.105/ 41.67 = 35.28 ( m3/h)

Tng tta cng tnh ton cc thng snh trn ca dng amin ngho rakhi thit btrao i nhit

Vi dng amin giu vo vtrao i nhit :

Khi lng phn ttrung bnh hn hp = 24.14

Lu lng mol = lu lng khi lng / khi lng phn ttrung bnh

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= 3.691.106/ 24.14= 1.53.105kmol/h

Ta c ttrng trung bnh hn hp = 43.69

lu lng thtch dng amin giu = 1.53.105/ 43.69 = 38.52 ( m3/h)

Tng tta cng tnh ton cc thng snh trn ca dng amin giu rakhi thit btrao i nhit

Tnh nhit trung bnh 2 lu th; vi 2 lu thi ngc chiu nh

120oC 54oC

110oC 44oC

Co

10 Co10

ttb =2

cd tt

= 10oC

Ttb1 =87oC

Ttb2 =77oC

Tnh hscp nhit ca dng hn hp bn trong ngDo khng c yu cu c bit nn ta chn chchy xoy n nh,

chn Re= 35000

Theo cng thc : 3.32 sch cc qu trnh thit btrong cng nghhacht v thc phm :

Nu = 0.021 k Re0.8Pr0.43( Pr/Prt)

0.25

= 0.021 (l/d)k Re0.8Pr0.43(Pr/Prt)0.25

Trong :

Prt: chun sPrandtl tnh theo nhit trung bnh ca v, cn cc thng skhc

tnh theo nhit trung bnh ca dng.

k : hshiu chnh tnh n nh hng ca tsgia chiu di l v ng knh d

ca ng.

Tnh Pr theo cng thc ;

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nu chn tng sng v cch sp xp theo hnh lc gic ta quy chun l n =169, sng trn ng xuyn tm l 15 ng

Tnh ng knh trong ca thit bun nng

D= t(b-1) =4d

t: bc ng, t = 50mm

b : sng trn ng xuyn tm lc gic u

D = 50(15-1) + 4.0,02

D = 0.7 m = 700 mm

vy kch thc ca thit btrao i nhit E101:F= 60,25 m2

n= 169 ng

D= 700 mm

H= 6m

Nh vy tnh ton thc nghim gn st vi Hysys tnh ton

Sai sl do tra cc gi trnhit dung, dn nhit, ti cc nhit .

Tng kt thit btrao i nhit trong HYSYS nh sau :

Loi ( TEMA) ALE

ng knh vthit b, mm 796

Sng 160

Btr ng Kiu tam gic

ng knh ngoi ng, mm 20

ng knh trong ca ng, 16

Chiu di ng, m 6

Bmt trao i nhit (m2) 60.25

Bc ng, mm 50

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2.4. Tnh ton thit blm lnh trc tip DDC

Thit blm lnh trc tip DDC l mt phn xng bao gm 3 quy trnh thitb: Thit blm lnh nc tun hon, bcha thng trc tip, bm nc tun

hon.

Thit blm lnh nc tun hon:

Nhit u vo: t1=300C

p sut: P=103 kPa

Lu lng khi lng: 6.058106kg/h

Khi lng phn t: 18,02

>lu lng mol =lu lng khi lng/ khi lng phn t

=6.058106/ 18,02=3.612106kmol/h

Ttrng ca nc: 55.23

>lu lng thtch = 3.612106 /55.23=65399 m3/h

Bcha thng trc tip:

Nhit vo ca nguyn liu:t2= 123.70

Cp sut: P=121kPa

Lu lng khi lng: 3.073106 kg/h

Khi lng phn ttrung bnh: 27.95

Lu lng mol=lu lng khi lng/khi lng phn ttrung bnh

=3.073106/27.95=1.10105kmol/h

Ttrng trung bnh ca hn hp nguyn liu vo: 3.667 10-2kmol/m3

Lu lng thtch: 1.10105/3.667 10-2=2.999106

Bm nc tun hon

Gi T l nhit ca dng ra

Nhit m dng nc mang vo lQnc=m1c 1(T-30)= 6.05810

61.002(T-30)=6.070106(T-30)

Nhit m dng nguyn liu mang vo l

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Qnglieu=m2 c2(123.7-T)= 3.0731061.386(123.7-T)=4.259106(123.7-T)

Nhit dng ra l:Qra=m3c3T=6.50110

61.123T=7.301106TTa c phng trnh cn bng nhit nh sau:

Qnglieu - Qnc = Qra4.259106(123.7-T) - 6.070106(T-30)= 7.301106TT=40.10C

p sut :103 kPa

Lu lng khi lng: 6.501106 kg/hLu lng mol=lu lng khi lng/khi lng pt trung bnh

=6.501106/27.91=2.239105

So vi kt qudo hysys tnh ton th kt qutnh ton bng tay st vi kt qutnh ton bng hysys.

2. 5. Thit k bnh tch:

Bnh tch ny c thit k theo nguyn l trng lc

Cng thc xc nh kch c bnh tch theo nguyn l trng lc da trn tc cho php ca dng kh s cun cc git lng theo pha kh khng xy ra:

V = Ks[(1g)/g]0,5

1khi lng ring pha lng iu kin bnh tch lm vic Kg/m

3

gkhi lng ring pha kh iu kin bnh tch lm vic Kg/m3

V l vn tc cho php ca dng kh m/s

Ksh s bnh tch m/s h s ny ph thuc vo kch c git lng c th tch,kiu bnh tch, thit b bn trong bnh.

Mc phn ly Thit bphn ly thngng Ho >=0.6m

Thit bphn ly nmngang Lo >=3

Sch 0.03 0.075

Trung bnh 0.047 0.117

Th 0.061 0.15

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Tnh ton :theo bi ra ta c : =1048kg/ =3.338kg/T =313K.P=2atm, Ks=0.037 , t=4.6p

qa=4822

=1.35 ql =32.08

=0.535

Vl= ql.t=2.459

H s phn ly

n=

(Gnc,Gnd lu lng cui v u ca pha lng ti li ra v vo

n=88% ph hp vi thp tch dng ng

=0.656m/s

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=1.6189m tng ng trong hysys

Chiu cao thp

V=(3.14/4).H vi V=5,d=1.619m

H=2.431m tng ng vi hysys

Chng 3 thit k s :

3.1 thao tc thit ktrn hysys:

S quy trnh

3.1.1 thao tc trn mi trng simulation basis manager:

Thao tc Gi trComponent/add/tradional CO2, MEAmin,H2O, NitrogenFluid pkgs/add/amine Pkg Kent-Eisenberg

Non-idel3.1.2 thao tc trn mi trng Enviroment

a.Nhp mt dng nguyn liu vi cc thng ssau:Stream name Flue gas-1Temperature (oC) 100Pressure ( kpa) 101

Mass flow (kg/h) 3.073e+6Component/mole factionCO2 0.0375

MEAmin 0.0H2O 0.0667

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N2 0.8958

b. Qut vn chuyn kh:Chng ta nhp mt my nn kh compressor vi cc thng s:

connectionName Fan 101Inlet Flue gas 1Outlet 2-flue gasEnergy E fan1

ParameterAdiabatic Efficiency 80Operading mode centrifugalCurve input option Single curve

wordsheetPressure /2-flue gas 121

c. Phn xng lm lnh trc tip DCC:

Bnh tch:

name V-100inlet 2-flue gas

water

Vapour Outlet 3-flue oilLiquid outlet CU-2

Bm hi lu y:

designname P-100inlet CU-2Outlet CU-3

Energy E pump1worksheetCU-3 pressure (kPa) 301

Thit blm mt:

L loi thit btrao i nhit heat exchanger:

Design/conectionTube side inlet CU-3Tube side outlet CU-4

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Shell side inlet CU-5Shellside outlet CU-6Design/parameterHeat exchanger model Exchanger design (Weighted)

Delta P tube side 198wordsheetTempature(oC)/ CU-4 30

Thit biu khin hi lu

Chn loi Recycler:

Inlet CU-4outlet water

Chuyn sang mc parameter v in cc thng ssau:

d.Thp hp th:Nhp mt dng amin vi thng ssau:

name 21-lean aminTemperature (oC) 40Pressure ( Kpa) 101Molar flow(kgmol/h) 1.529e+5Composition/ mole fractionCO2 0.0291MEAmine 0.1106H2O 0.8602nitrogen 0

Sau nhp phi thp hp thvi cc thng ssau:Design/conections

name AdsorberTop stage inlet 21-lean aminBottom stage inlet 3-flue oilTop stage outlet 4-flue gas to atmospheBottom stage outlet Rich amin to pumpPressure top (kPa) 106Pressure bottom(kPa) 121Temperature top(C) 49.71Temperature bottom(C ) 44.13

Number stage 18Parameter/ amin

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Weir length(m)Tray diameter( m)Parameter/solverSolving Method Modified HYSIM inside-out

Fixed damping factor 0.4Parameter/efficiencies/reset H2S,CO2

e.Bm giu amin:name Pump-2inlet Rich amin to pumpoutlet 6-rich aminEnergy E pump2Adiabatic efficiency 75%

Pressure 6-rich amin 750 kPa

f. Thp gii hp:name De-adsorberInlet steams/inlet stage Rich amin 8/ 1_mairCondenser Energy stream Condenser11Vapour outlet CO2 recoverBottom liquid outlet Lean amin to pump 2P cond (kPa) 200P reb (kPa) 200T cond(oC) 90.5T reb(oC) 125

Number stages 12Delta P 0Design/monitorAdd spec/comp

fraction/reb/liquid/Mole fraction=3.01e-002

Add spec/reflux radio 0.6

g.Thit btrao i nhit dng amin giu v ngho:name heat exchanger 1Tube inlet Lean amin to heat exchangerTube outlet Lean amin out heat exchangerShell inlet 6-rich aminShell outlet rich amin 7WorksheetLean amin to heat exchanger 700 (kPa)Lean amin out heat exchanger 400(kPa)6-rich amin 750(kPa)

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rich amin 7 450(kPa)

h.Giai on hi lu dng amin ngho:Giai on ny quan trng nht l thit btrn mix-100 bxung dng nc v

amin.Nhp dng nc nh sau:

name Water freshTemperature ( c) 53.55Pressure ( kPa) 150Molar flow (kgmol/h) 5517MolefactionCO2 0.012H2O 0.9998

Nhp dng amin nghoname Amin freshTemperature ( c) 53.55Pressure ( kPa) 150Molar flow (kgmol/h) 94.63MolefactionMEAmin 0.8622H2O 0.1378

Nhp mt my trn vi cc thng ssau:name MIX-100

Inlet Amin freshWater fresh16-lean amin

outlet Lean amin 19

i. Lm lnh tch thu hi CO2:Thit kvi thng ssau:

name V-101inlets 10-CO2 recover

Vapour outlet 11-CO2 recoverLiquid outlet 12-Water make up

3.2 ti u ha :Qu trnh thc hin ti u ha dng Databook v spreadsheet3.2.1 kho st trong castudy nh hng ca lu lng kh nguyn liu ti nng

CO2trong kh i ra thp hp th:Thit lp trn case study chng ta c kt qusau:

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Nh vy vi mt lng amin khng i trong iu kin thp lm vic n nhth khi tng lu lng nng u vo nng ca CO2 trong kh sau khi i qua thphp thtng ln.

3.2.1 kho st nh hng ca p sut y thp hp thti hiu sut tch CO2Khi chng ta thay i p sut ca y thp hp thtc l thay i p sut qua

tng a vi sa ca thp khng i chng ta thu c snh hng nh sau:

Trong dch chuyn CO2c tnh theo cng thc:

3.00E-03

3.20E-03

3.40E-03

3.60E-03

3.80E-03

4.00E-03

4.20E-03

4.40E-03

4.60E-03

4.80E-03

109000 109500 110000 110500 111000 111500 112000 112500 113000

%molCO2

flow rate fuel (kmol/h)

0.86

0.87

0.88

0.89

0.9

0.91

0.92

0.93

0.94

100 200 300 400

Co2

removerdegree

pressure (KPa)

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2 2

2

. min min

. , as

CO richa CO leana

CO fuel g

n nR

n

N c tnh ton nhthit blogical:

V p sut c thay i y thpDa vo thta thy khi p sut hp thtng th lng CO2c loi bcngln. hay n c hp thbi amin cng ln. tuy nhin trong iu kin vn hnhthit km bo tnh an ton v tnh kinh tth khng nn tng p sut cao. Do p sut lm vic ca thp cn c cn i thu c kt quph hp. sliuc a ra trn y vi thp gii hp c hi lu 1.27 v nng y ca CO2khng thay i l 0,028.

3.2.2 kho st snh hng ca nCO2/naminti tng nng lng cn cung cpcho mt tn CO2.

kho st snh hng ny chng ta cn cnh dch chuyn ca CO2

trong phn tha ra di y chng ta c thphthuc nh sau:

Trong tlsmol nco2/naminc ly tdng amin i ra y thp gii hp.tng nng lng ca ton bqu trnh tnh cho mt tn CO2c sn xut ra s

phthuc vo tsny. Nh ta thy khi m lsmol nco2/namintng th nng lngcn thit sn xut 1 tn CO2 gim trong khong kho st. Tuy nhin gimnng lng nhdn khi nng CO2tng. Nng lng cung lun i hi nhnhttuy nhin chng ta cng cn cn i vi thi gian sn xut c 1 tn CO2v mcd nng lng gim nhng thi gian sn sut 1 tn CO2 li tng

6.00E+06

7.00E+06

8.00E+06

9.00E+06

1.00E+07

1.10E+07

1.20E+07

1.30E+07

1.40E+07

1.50E+07

1.60E+07

0.15 0.17 0.19 0.21 0.23 0.25 0.27

kj/tonC

O2

nCO2/nAmin

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24

3.2.3 kho st snh hng ca lsmol nco2/naminti thi gian sn xut 1 tnCO2 :

Ta thy snh hng ca lsmol nco2/naminti thi gian sn xut 1 tn CO2tng nhanh theo tlsmol. Do gim ti thiu thi gian th tlcanco2/naminphi c la chn ph hp.

Kt lun:nh vy m bo nng CO2 trong kh thi ra mi trng cho phpchng ta phi quan tm ti tlca amin hp thvi CO2trong nguyn liu. cnhiu yu tnh hng n dch chuyn CO2lin quan ti thp hp th, p sut

lm vic ca thp l mt yu tcn quan tm. Ngoi ra cn c tinh khit cadng amin, nhit lm vic, sa, khong cch a ti u ha nng lng caquy trnh i hi nng lng thp nht vn m bo thng skh thi ra mi trngv lng CO2c sn sut ra trong thi gian thch hp. da vo thkhi cn igia thi gian to ra 1 tn CO2v nng lng cn thit ta cn tlcanCO2/nAmin= 0,27. Khi iu kin lm vic ca thp gii hp sl hi lunh l 1.27 v nng CO2y thp hp thl 0,03.

3.3 so snh kt qum phng vkt qutnh ton:

Nhn chung tuy c sai lch do phng php tnh v sai strong qu trnh tnhton. Nhng kt qunhn chung c thchp nhn c tc l m phng hysys tnhton gn st vi kt qutnh c trong chng 2. thy r hn c thso snhkt quphlc chng 4 v kt qutnh ton chng 2.

20

20.5

21

21.5

22

22.5

23

23.5

24

24.5

0.15 0.2 0.25 0.3

time(s)

nCO2/nAmin

Series1

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Chng 4 phlc

Hnh 1:PFD ca qu trnh hp thCO2 c m phng trong Aspen

Hysys

Hnh 2 : Thp hp thkh dng MEA

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Hnh 3: Thp ti sinh MEA

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27

Hnh 4: Thng shot ng ca cc thit b

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28

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29

Bng 1 : iu kin hot ng cc dng

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30

Bng 2: Thnh phn cc dng

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Ti liu tham kho

1. CO2 capture from power plants part 1. Aparametric study of thetechnical performance based on monoethanolamine

2. Cost estimation of CO2removal in HYSYS-candidate: ove BrautKallevik ( chapper 2and chapper 3)

3.Bi ging tin ng dngKs on Hun4.Hng dn hc Hysys- Nguyn ThMinh Hin-H Bch Khoa H

Ni.5. Cng nghchbin kh thin nhin v kh du m- bn dch ca

Nguyn Vn Phc, Hong Minh Nam, Nguyn nh Soa, PhanMinh Tn

6. Gas conditionining and processing by John M. Campbell7. Stay qu trnh v thit btrong cng nghha cht tp 2Ts

Trn Xoa. Pgs,Ts Nguyn Trng Khung, Ts Phm Xun Ton

hysys nhóm 1

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