Aspen Plus® by AspenTech is a Process modeling tool for conceptual design, optimization, and performance monitoring of chemical processes Aspen Plus® predicts process behavior using engineering relationships such as mass and energy balances, phase and chemical equilibrium, and reaction kinetics. With reliable thermodynamic data, realistic operating conditions, and the rigorous equipment models, engineers are able to simulate actual plant behavior. World’s largest database of pure component and phase equilibrium data for conventional chemicals, electrolytes, solids, and polymers Comprehensive Library of Unit Operation Models Addresses a wide range of solid, liquid, and gas processing equipment Models a wide range of industrial processes including power, chemicals, polymers, metals and minerals, etc
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Aspen Plus® by AspenTech is a Process modeling tool for conceptual design,
optimization, and performance monitoring of chemical processes
Aspen Plus® predicts process behavior using engineering relationships such as mass and energy balances, phase and chemical equilibrium, and reaction
kinetics.
With reliable thermodynamic data, realistic operating conditions, and the rigorous equipment models, engineers are able to simulate actual plant behavior.
World’s largest database of pure component and phase equilibrium data for
conventional chemicals, electrolytes, solids, and polymers
Comprehensive Library of Unit Operation ModelsAddresses a wide range of solid, liquid, and gas processing equipment
Models a wide range of industrial processes including power, chemicals,
polymers, metals and minerals, etc
Esempio di definizione corrente di input
Esempio di definizione blocco di reazione (reattore di Gibbs)
Schema di processo: Impianto di gassificazione per la produzione di idrogeno
Schema a blocchi (alimentazione, gassificazione, trattamento gas)
Combustibili di partenza: carbone e biomassa in diversi rapporti massiviAgenti gassificanti: ossigeno (puro al 95%) e vapor acqueo
Alimentazione
(+devolatilizzazione)
Gassificazione
(+quench e recupero
termico)
Trattamento gas e ciclo energetico
miscela combustibili solidi
agenti gassificanti
acqua di quench recupero termico
residui solidi
syngas
vapore
aria
sottoprodotti (zolfo,
gas esausti, fumi)recuperi termici
energia
Schema di processo: Impianto di gassificazione per la produzione di idrogeno
Blocco di alimentazione (Carbone, Biomassa e Gas)
Schema di processo: Impianto di gassificazione per la produzione di idrogeno
Blocco di gassificazione (reattore, quench e separazione fanghi)
Schema di processo: Impianto di gassificazione per la produzione di idrogeno
Blocco di trattamento gas (reattore di water shift, desolforazione, membrane di
separazione e ciclo di combustione dell’idrogeno)
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.25 0.3 0.35 0.4 0.45 0.5
rO/C (mol/mol)
mo
l fr
ac
tio
n
1000
1200
1400
1600
1800
2000
T p
ea
k g
as
ifier [°C
]
[30% biom, rSt/C 0.20 mol/mol]
CO
H2
CO2
TH2O
CH4TAR
Risultati analisi di sensitività: composizione del syngas al variare del rapporto ossigeno / combustibile
Risultati analisi di sensitività: effetto del rapporto biomassa/carbone sull’idrogeno prodotto(carbone sudafricano, pioppo)
0.6
0.7
0.8
0.9
1
1.1
1.2
0.25 0.3 0.35 0.4 0.45 0.5
rO/C (mol/mol)
mo
l H
2 p
roc
es
s/m
olC
fe
ed
5%biom
15%biom
30%biom
40%biom
50%biom
[rSt/C 0.20 mol/mol]
Risultati analisi di sensitività: confronto delle efficienze di processo
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.25 0.3 0.35 0.4 0.45 0.5
rO/C (mol/mol)
Eff
icie
nc
y
ηHηI
ηP
[rBiom/Coal 30%, rSt/C 0.20 mol/mol]
poplar wood
BiomassBiomassCoalCoal
HH
H
MHVMHV
MHV
⋅+⋅
⋅= 22η
BiomassBiomassCoalCoal
HDUHH
P
MHVMHV
EPMHV
⋅+⋅
−−⋅=
∑ ∑22
η
BiomassBiomassCoalCoal
IHDUHH
I
MHVMHV
EEPMHV
⋅+⋅
+−−⋅=
∑ ∑ ∑22
η
water
VENTURI
SCRUBBER
fly ashwaste water
LT SOUR
CO SHIFT
HT SOUR
CO SHIFT
nitrogen
H2S to treatment
water/MDEA
stripping gas or steam
GASIFIER
pressurised hot water
total quench
(water)pressurized water inlet
pressurized
water outlet
oxygen
syngas
slag
waste water
STRIPPER
ABSORPTION
COLUMN
HP steam 31 bar
HP steam
COND
CANDLES
MIXER
SULFUR REMOVAL
SECTION
compressors
MEMBRANE
SEPARATION SECTION
AIR
SEPARATION
COLUMNS
Air
COND
ASU
condensate
N2
WATER GAS
SHIFT REACTION
DEDUST SECTION
LP steam 5bar
condensate
MEMBR.1
MEMBR.2
MEMBR.3
P-ASU
P-MEMBR
syngas
permeate
HYDROGEN
INTEGRATION WITH
POWER PLANTINTEGRATION:
* COAL
* STEAM* WATER
* EMISSIONS
* ENERGY
H2duct
DISTR
IBUTED
GEN
ERATIO
N
MICRO
TURBINES
ADVANCED
BURNERS
FLAMELESS
COMBUSTORS
POROUS MATRIX
BURNERSHYBRID
CATALYTIC/POROUS
BURNERS
UTILIZATION
SCENARIOS
coal
biomass
HEAT
RECOVERY
Schema (complesso) di gassificazione per la produzione di idrogeno
Process Flow Diagram (AspenPlus Hierarchy): processo di gassificazione
oxygensteam
fuel pre-
heating
gasifying
agents pre-
heating
fueloxygensteam
DEVO
sub-model(CPD Db)
COMBUSTIONsub-model (PFR)
GASIFICATION
sub-model (PFR)
.
.
i-th QUENCH
(MIXER)
i-th HEAT
RECOVERY
.
.
SEPARATION syngas
waste water
slag
3 steps of quench / heat recovery
quench water
hot water
LP steam
pressurized
water
HP hot water
material
streams
heat streams
Schema di un gassificatore a letto trascinato
Process Flow Diagram (AspenPlus Hierarchy): gassificatore
Process Flow Diagram (AspenPlus Hierarchy): Air Separation Unit
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