thuyet trinh hysys
TRANSCRIPT
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I. GII THIU S LC V NH MY M PH
M
II
.
TNG
QUAN
V
QU
TRNH
KH
LU
HUNH
V
SN
XUT
KH
TNG
HP
III
.
M
PHNG
QUY
TRNH
CNG
NGH
KH
LUHUNH
V
REFORMING
HI
NC
KH
T
NHINTRONG
NH
MY
M
PH
M
IV . KT LUN
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I.
S LC V NH MY M PH M
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Chut: Tng cng ty Du khVit Nam
Nh thu: Technip Italia v Samsung Egineering Hn quc
Tngvnut: 450 triu USD
Cng ngh: anmch v Italia
Khi cng xy dng nh my: 3/2001
Ngy nhn kh vo nh my: 24/12/2003
Ngy ra snphm ammonia u tin: 4/2004
Ngy ra snphm ur u tin: 4/06/2004
Ngy bn giao snxut cho chut: 21/9/2004
Ngy khnh thnh nh my: 15/12/2004
S LC V NH MY M PH M
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NGUYN LIU CHNH DNG CHO NH MY
Kh thin nhin: CH4, C2H6, C3H8, C4H10
Khng hnh mBchH, Kh thin nhin tbntrng NamCn Sn v cc b khc thucthmlca pha Nam.
Lng kh tiu th: 450 x 106 Nm3/nm.
c tnh v thnh phn kh:Nhit: 18-36 0C.
p sut: 40 Bar
Trnglng phn t: 18,68 g/molNhittr: 42,85 MJ/m3 hay 40613,4 BTU/m3
Thnh phn: C1=83,31%. C2=14,56%. C3=1,59%. iC4=0,107%.
nC4=0,109%.
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Hi nc
Hi nc
Nc
lm mt
Nc thi
Sng
Th
ViXng ph tr Xng
AmnicXng
Ur
Xngsn phm
Kh CO2
Amnic Ur ht
2200 t/ngy
Nc lm mt
Kh t nhin
Nc tun hon
in
SN PHM CHNH CA NH MYNH3: 1,350 tn NH3 /ngy (Cng ngh Haldor Topsoe - anmch)
UREA: 2,200 tn Urea /ngy (Cng ngh SnamProgetti - Italia)
IN: 21MWH
S LC V NH MY M PH M
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Khtnhin Kh Luhunh
Secondary
Reformer
Khng kh (t)
Chuyn ha
CO
Nhitthp
Hinc
Primary
Reformer
Chuyn hoCO
Nhit cao
H2
S khi qu trnh snxut kh tnghpca nh my mPH M
II. TNGQUAN VQU TRNH KHLUHUNHV SNXUTKH TNGHP.
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Kh t nhin
Khschti l
Reforming (S 0,05ppm)
Phng trnh phnng trong 10-R-2001:
R-S-H + H2 RH + H2S
t = 380 o C
Xt : Co-MoS
Phng trnh phnng trong 10-R-2002 A/B:
ZnO + H2S ZnS + H2Ot = 400 o C
CNG ON I: KH LU HUNH
Thp Hyrha
10-R-2001
Thp hpthLuhunh
10-R-2002
A/B
H2 Recycle
10-K-4011
Mcchca cng on: kh luhunhkhidng kh cng ngh v luhunh gy ngcxc Reforming.
Mc ch ca thit b Hydro ho: chuyn hocc hpchtcaluhunhdnghuc sangdng v c H2S v xc tc ZnO ch hp thcluhunhdng v c
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CNG ON II: REFORMING
Phng trnh phnng trong 10-H-2001:
CH4 + H2O CO + 3H2 - Q
CnH2n+2 + H2O Cn-1H2n + CO + 3H2 Q
CO + H2O CO2 + H2 + Q
t = 650/780 o C
Xt : Ni-Mg
Phng trnh phnng trong 10-R-2003 :
CH4 + 2O2 CO2 + 2H2O
( Khng kh c 21% O2
v 79% N2
)
To = 160
LReforming
scp
10-H-2001
Kh nhin liu (Kh t)
Chuyn ha COKh cng ngh
Hi ncL
Reformingth cp
10-R-2003
Khng kh
to / Xt
Mcchca cng on: Chuyn ho kh t nhin thnh CO, CO2 v H2 qua
phnng Reforming bnghinc.
Phnng Reforming l phnng thu nhit, nhitlng cung cp cho phn
ngtithitb Reforming scpt qu trnh t kh Fuel gas
Nhit lng cung cp cho phn ng trong thit b Reforming th cp t
phnng chy trctipgia khng kh c nn t my nn khng kh v
kh t nhin, H2
Nhngyutnhhngnhiusutcaphnng: Nhit Tl Steam/Cacbon (2,9-3)
Hot tnh ca xc tc. Khi xc tc hotng sau mtthi gian dihot tnh gim, mbohiusutphnng cao th phi tngnhithoctngtl Steam/Cacbon.
CH4 : 14%
CH4 : 0,6%
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CNG ON II: REFORMING NH HNG CA
NHIT :
Khi nhittngt
800 1100oK th hiu
sutchuyn ha CH4
tng, cn hiusut
chuyn ha CO gim
Nu qu trnh chuyn ha CH4 v CO trong cng mtthitb th nhit cao nng CO cn li cao, do khng thtngnngH2.
Khi nhitchuyn ha thp (800oK) mtlngln CH4chaphnng.
Do : thu cnng H2
cao phichuyn ha hai giai on
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CNG ON II: REFORMING
NH HNG CA T L HI NC/ NGUYN LIU
chuyn ha ca CH4 khi thayitl S/C v nhit,kho stp sutl 1 bar
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CNG ON II: REFORMINGKh nhin liu (Kh t)
Chuyn ha COKh cng ngh
Hi nc
Khng kh
CH4 : 14%
CH4 : 0,6%
Xc tccathitbReformingscpgm 3 lp xc tc:RK211, RK201 v R-67-7H tui th d kin t 3 n 5nm.
Xc tccathitbReformingthcp RKS-2-7H.Tuithdkin > 5nm.
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CNG ON III: CHUYN HA CO THNH CO2 v H2
Phng trnh phnng 10-R-2004 :
CO + H2O CO2 + H2 + Q
Phng trnh 10-R-2005.
CO + H2O CO2 + H2 + Q
t = 360 430 o C
Xt : Fe, Cr, Cu
Kh Reforming
Khchuyn ho
( co : 0,23%)
Thp chuynha CO nhit
cao
10-R-2004
Thp chuynha CO nhit
thp
10-R-2005
t = 195 220 o C
Xt : Cu, Zn, Al
o Mcchca qu trnh : chuyn ha CO thnh CO2 v H2o Phnngchuyn ha CO thnh CO2 lphnngtonhit,
nhit cao tcphnnglnnhnghiusutchuyn hathp. Vvycngon ny chia thnh 2thitbchuyn hao Thp chuyn ha CO nhit cao chuyn haphnln
CO CO2.o Thp chuyn ha nhitthpchuyn ha CO CO2
hn.
CO : 3,23%.
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CNG ON II: CHUYN HA CO THNH CO2 v H2
Kh Reforming
Khchuyn ho
( co : 0,23%)
XT : Fe; Cr;
Cu
XT: Cu; Zn ;
Al
CO : 3,23%.
Xc tc 10-R-2004: SK-201-2, thi gian bo hnh 3
nm, tuithdkin 5 nm. Xc tc 10-R-2005 : gm 2 lp: LSK v LK-821-2, thigian bo hnh 2 nm, tuithdkin 3 nm.
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PHN III: M PHNG QU TRNH CNG NGHKHLUHUNH V SNXUT KH TNGHPTRONG NH MY M PH M
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Thitlp thng scbn cho qu trnh m phng3.1.
3.1.1.Thitlp cc cutcnthit cho qu trnh
- Lachn cc cu t sau: Oxygen, Hydrogen, Nitrogen,CO, CO2, Argon,
Methane, Ethane, Propane, i-Butane, n-Butane, n-Hexane, H2O, M-Mercaptan,
E-Mercaptan, ZnO, H2S, ZnS.
- Lpcutgi:
- Hnghc: Peng-Robinson.
Cut ZnO ZnS
Khilng phn
t
81 97
Tkhi (Kg/m3) 5650.03 7133.02
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Thitlp thng scbn cho qu trnh m phng3.1.
3.1.2.Thitlp ccphnng cho qu trnh
Phnng cho qu trnh hydro ha
Phnng cho qu trnh khluhunh
Phnng cho qu trnh Reforming scp
Phnng cho qu trnh chuyn ha CO -> CO2
Phnng cho qu trnh Refoming thcp
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Thitlp thng scbn cho qu trnh m phng3.1.
1. Qu trnh hydro ha
Add Reaction: Conversion
Name Hidro hoa 1 Hidro hoa 2
Stoichiometry/Component
M-Mercaptan E-Mercaptan
Hydrogen Hydrogen
Methane Ethane
H2S H2S
Stoichiometry/Stoich Coeff
-1 -1
-1 -11 1
1 1
Basis/Rxn Phase VapourPhase VapourPhaseBasis/Co 100 100
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Thitlp thng scbn cho qu trnh m phng3.1.
1. Qu trnh hydro ha
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Thitlp thng scbn cho qu trnh m phng3.1.
2. Qu trnh khluhunh
Add Reaction: Conversion
Name Khu S
Stoichiometry/ComponentZnOH2S
ZnS
H2O
Stoichiometry/Stoich Coeff
-1
-1
1
1
Basis/Co 100
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Thitlp thng scbn cho qu trnh m phng3.1.
2. Qu trnh khluhunh
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Thitlp thng scbn cho qu trnh m phng3.1.
3. Qu trnh Reforming scpAdd Reaction: Conversion
Name Refor_SC1 Refor_SC2 Refor_SC3
Stoichiometry/Component
Methane CO Ethane
H2O H2O H2OCO CO2 Methane
H2 HydrogenCO
Hydrogen
Stoichiometry/Stoich Coeff
-1 -1 -1
-1 -1 -11 1 1
3 11
2
Basis/Rxn Phase VapourPhase VapourPhase VapourPhase
Basis/Co 55 35 100
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Thitlp thng scbn cho qu trnh m phng3.1.
3. Qu trnh Reforming scp
Name Refor_SC4 Refor_SC5 Refor_SC6 Refor_SC7
Stoichiometry/
Component
Propane i-Butane n-Butane n-Hexane
H2O H2O H2O H2O
Ethane Propane Propane MethaneCO CO CO CO
Hydrogen Hydrogen Hydrogen Hydrogen
Stoichiometry/S
toich Coeff
-1 -1 -1 -1
-1 -1 -1 -5
1
1
1
1
1 1 1 5
2 2 2 10
Basis/Rxn
PhaseVapourPhase VapourPhase VapourPhase VapourPhase
Basis/Co 100 100 100 100
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Thitlp thng scbn cho qu trnh m phng3.1.
3. Qu trnh Reforming scp
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Thitlp thng scbn cho qu trnh m phng3.1.
4. Qu trnh Reforming thcp
Add Reaction: Conversion
Name Refor_TC1 Refor_TC2 Refor_TC3
Stoichiometry/
Component
Methane Methane CO
H2O Oxygen H2O
CO CO2 CO2
Hydrogen H2O Hydrogen
Stoichiometry/
Stoich Coeff
-1 -1 -1
-1 -2 -1
1 1 1
3 2 1
Basis/Rxn
PhaseVapourPhase VapourPhase VapourPhase
Basis/Co 70 100 5
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Thitlp thng scbn cho qu trnh m phng3.1.
5. Qu trnh chuyn ha CO -> CO2Gm hai giai on: giai on chuyn ha nhit thp v nhit cao.i vi qu trnh ny th trong Hysys tch hp sn cho chng ta phn
ng trong library v c tnh ton theo hng s cn bng.Nn ta chn loi phn ng Add Reaction: Equilibrium v vo trong
Library chn phn ng: CO + H2O -> CO2 + H2
Vimc Reaction Set
Name Active ListHidro Hoa Hidro hoa 1, Hidro hoa 2
Khu S Khu SRefor_SC Refor_SC1, Refor_SC2, Refor_SC3, Refor_SC4,
Refor_SC5, Refor_SC6, Refor_SC7
Refor_TC Refor_TC1, Refor_TC2, Refor_TC3CO -> CO2 Tcao CO -> CO2
CO -> CO2 Tthap CO -> CO2
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Thitlp thng scbn cho qu trnh m phng3.1.
Cui cng taphi add tonb cc Reaction Set ny vo trong hnhitngchn.
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
3.2.1. Thitlp cc dng nguyn liu cho qu trnh1. Dng kh t nhin 2. Dng km oxit
Nhit 36oC, p sut 24.5 bar_g Nhit 250oC, p sut 38.2 bar_glng mole l 31476 Nm3/h (gas) mass flow: 290 Kg/h
Cut Thnh phn (% mole)N2
CO2
CH4
C2H6
C3H8
n-C4H10
i-C4H10
n-Hexane
0.26
0.01
83.31
14.57
1.60
0.11
0.11
0.03
Cut Thnh phn (%
mole)ZnO 1.0
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
2. Dng Recycle H2Nhit 370oC, p sut 38 bar_g v lulng mole l 1.083x105 Nm3/h (gas)
3. Dng khng kh nng
Nhit 550oC, p sut 31.5 bar_g, lulng dng mole 5.353x104 Nm3/h (gas)
Cut Thnh phn (% mole)
Hydrogen
CO2
H2O
0.01%
0.06%
99.93%
Cut Oxygen Nitrogen CO CO2 Ar H2O
Thnh phn(% mole)
20% 76% 1% 1% 1% 1%
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
3.2.2. Thitlp cc thitb c trong qu trnh1. Thitlp my nn K-100
My nn K-100 c nhimv nn kh t nhin t 24.5 bar_g ln 39.2 bar_g
Name K-100
ConnectionInlet Khi Tu Nhien
Outlet Gas to E1
Energy Q-K100
WorksheetPressure, Gas to E1
(bar_g)39.2
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
2. Thitlpthitbun nng E-1
Name E-1ConnectionInlet Gas to E1
Outlet Gas to Mix1Energy Q-E1
Parameters
Duty 2.037x107 kJ/hDelta P 49.81 kPa
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
3. Thitlp Mix 1
Name Mix 1Connection
InletGas to Mix1
Recycle H2Outlet Gas to E2
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
4. Thitlp E-2 Name E-2Connection
Inlet Gas to E2Outlet Gas to Hydro HoaEnergy Q-E2
WorksheetPressure, Gas to Hydro
Hoa (bar_g)38.2
Temperature, Gas toHydro Hoa (C)
400
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
5. Thitlp Hydro Hoa (Conversion)
Name Hydro HoaConnection
Inlet Gas to Hydro HoaVapour Outlet To khu SLiquid Outlet Hydro Liq
Energy Q-hydro hoaReactionDetails, Reaction Set Hydro Hoa
WorksheetTemperature, To khu S (C) 380
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
6. Thitlp Khu S (Conversion) 7. Thitlp Mix 2
8. Thitlp E-3 (Heater
Name Khu SConnection
InletTo khu S
Km oxitVapour Outlet To Mix 2Liquid Outlet Khu S Liq
Energy QReactionDetails,
Reaction SetKhu S
WorksheetTemperature,To Mix 2 (C)
390
Name Mix 2Connection
InletTo Mix 2
Hoi Nuoc
Outlet To E3
Name E-3Connection
Inlet To E3
Outlet To Refor_SCEnergy Q-E3
WorksheetPressure, To
Refor_SC (bar_g)34.8
Temperature, ToRefor_SC (C)
535
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
9. Thitlp Refor_SC (Conversion) 11.Thitlp Refor_TC (Conversion)
10. Thitlp Mix 3
Name Refor_SCConnection
Inlet To Refor_SCVapour Outlet To Mix 3Liquid Outlet Refor_SC Liq
Energy Refor_SC Q
ReactionDetails, Reaction Set Refor_SC
WorksheetPresure, To Mix 3
(bar_g)30.90
Temperature, To Mix3 (C)
783
Name Mix 3Connection
Inlet To Mix 3
Khong khi Nong
Outlet To Refor_TC
Name Refor_TCConnection
Inlet To Refor_TCVapour Outlet Vap to E4Liquid Outlet Refor_TC Liq
Energy Refor_TC QParameter
Delta P 50 kPaReaction
Details, Reaction Set Refor_TCWorksheet
Temperature, Vap ToE4 (C)
958
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
12. Thitlp E-4 (Cooler) 13. Thitlp CO -> CO2 Tcao (Equilibrium)
Name E-4Connection
Inlet Vap To E4
Outlet
To CO -> CO2
CaoEnergy E4-Q
ParametersDelta P 20 kPa
Worksheet
Temperature,
To CO -> CO2Cao(C)
340
Name CO-CO2 TcaoConnection
InletTo CO -> CO2
Cao
Vapour Outlet To E5Liquid Outlet Liq Tcao
Energy Q1Reaction
Details, Reaction SetCO -> CO2
TcaoWorksheet
Temperature, To E5(C)
360
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
15. Thitlp E-5 (Cooler) 16. Thitlp CO -> CO2 Tthp (Equilibrium)
Name E-5Connection
Inlet To E5
OutletTo CO -> CO2
TthapEnergy E5-Q
ParametersDelta P 90 kPa
WorksheetTemperature, To
CO -> CO2Tthap(C)
170
Name CO-CO2TthapConnection
InletTo CO -> CO2
TthapVapour Outlet Vap ProductLiquid Outlet Liq Product
Energy Q2Reaction
Details, Reaction SetCO -> CO2
Tthap
WorksheetTemperature, To E5(C)
190
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
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3 Thit lp m phng qu trnh kh S v qu trnh Reforming hi nctrong nh my m Ph M
3.2.
S PFD trn Hysys qu trnh khluhunh v Reforming hinc trong nh my mPh M
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Ktqu m phng3.3.
3.3.1.So snh kt qu m phng vi s liu t nh my m Ph M
Bng 3.1. Thnhphn dng snphmca l Reforming scp v thcp
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Ktqu m phng3.3.
3.3.1.So snh kt qu m phng vi s liu t nh my m Ph M
Bng 3.1. Thnhphn dng snphmca l Reforming scp v thcp
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So snh kt qu m phng vi s liu t nh my m Ph M3.3.1
Bng 3.2. S liu v dng sn phm thit b chuyn ha CO -> CO2 nhit cao v nhit thp
Nhn xt: Ktqu gia qu
trnh m phngv thc t l
tng i st vinhau, thnh phnsn phm kh cam phng c sai
lch nhngkhng ng k.
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Kho st s nh hng ca t l hi nc trn hydrocacbonn qu trnh Reforming hi nc.
3.3.2
Sdng Set trong Hysys ci t gi trca t l dng lu lng molegiahinc v kh t nhin.
Tin hnh kho st snhhngca qu trnh Reforming khi m tlhinc trn kh t nhin thay i, ta kho st s thay i thng qua s thay ica lu lng mole ca kh H2 v CO c trong dng kh snphm (VapProduct).
Thitlp Set cho tlhinc v kh t nhin nh sau:
Name SET-1Connection
Target Variable,
Object Hoi NuocTarget Variable,
VariableMolar Flow
Source, Object Khi Tu NhienParametersMultiplier 3.4403
S dng Case study
kho st s nhhng ca lu lngmole hi nc n
qu trnh Reforming.
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Kho st s nh hng ca t l hi nc trn hydrocacbon nqu trnh Reforming hi nc.3.3.
Hnh 3.2. th nh hng ca t l hi nc trn kh t nhinn qu trnh reforming thng qua vic kho st s thay i ca
lu lng mole ca H2 v CO.
3.3.2
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Tth ta thyrng:Khi tng t lhinc trn kh t nhin th qu trnh reforming cho
chng ta cnhiu Hydro hn v lng CO thu cgimdn, do nthun li cho qu trnh mun thu nhiu hydro. Mt khc ta cng nhn thyrng, khi t lhinc trn kh t nhin tng nmt gi tr no trongkhong > 3.5 th lulng dng ca kh hydro tng khng ngk. Do vit l 3.4403 ca nh my nh tiu v ph hpvi thng skho st trnCase Study.
Kho st s nh hng ca t l hi nc trn hydrocacbon nqu trnh Reforming hi nc.
3.3.2
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KT LUN
Mphng
thnh cngqu trnh kh
S v qu
trnh
Reforming
So snh ckt qu caqu trnh
trong m
phng v trnthc t. Kho st s
nhhngcatlhinc trn kht nhin n
qu trnh
Reforming
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XIN CHN THNHCM N THY V CC
BN THEO DI