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« Gas Separation Processes: CAPE-OPEN unit operation for Sweep-based Membrane» Nancy | 28 October 2021 Outlet Air N 2 N 2 O 2 Air
« Gas Separation Processes: CAPE-OPEN unit operation for Sweep-based Membrane»
Nancy | 28 October 2021
Outlet
Air
N2
N2
O2
Air
PresentationBrief description of the « team »
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People involved in the project
▪ Éric FAVRE
▪ Professor at l’Université de Lorraine (ENSIC) - UL
▪ 180 publications, 15 brevets, more than 70 contrats with industry)
▪ Specialized on gas/liquid separation through membrane module
▪ Christophe CASTEL
▪ Professor at l’Université de Lorraine (ENSIC) - UL
▪ Specialized on gas/liquid separation through membrane module
▪ Roda BOUNACEUR
▪ Research Engineer - CNRS
▪ Expert on numerical developement
▪ Jasper van Baten
▪ CAPE-OPEN development
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HistoricalPrevious developed Unit Operations
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Membrane separation technology offers an attractive solution for bringing environmental sustainability to the chemical industries.
Advantages of membrane technology❑ Simplicity, plug-an-play process with no regeneration steps❑ Energy efficiency, involves no phase change❑ Environmental friendly, no chemical reactions or solvents are used❑ Compactness, based on intensified separation process
Membrane Gas Separation
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Membrane Gas Separation Simulator
▪ MEMSIC
▪ Isothermal
▪ Several transport models (Cross-Flow, Co & Counter current, PSR)
▪ Several transfer models (constant permeability, dual-mode, flory-huggins, …)
▪ Commercialized (http://memsic.tech/)
▪ MEMSIC 2.0
▪ Joule-Thomson effect
▪ Pressure drop estimation
▪ Not commercialized
▪ SWEEP
▪ New tools
▪ Energy mass balance
▪ Co- or Cunter-current flow pattern
▪ The Pressure drop is considered
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SWEEP
Outlet
Air
N2
N2
O2
Upstream
Downstream
Permeable Polymeric Film
S
P’
P’’
Retentate :
Qout = (1-).Qin
xout
P’
Feed :
Qin
xin
Pin
Permeate :
Qp = .Qin yp P’’
▪ MEMBRANE
▪ SWEEP
Upstream
Downstream
S
P’
P’’
RetentateFeed
Sweep In Sweep Out
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SWEEP
▪ Retentate to permeate recycle – Retentate Recycle flow rate
Applications:
➢ Gas drying
➢ Air conditioning
➢ Fuel cell humidification
➢ Membrane energy exchanger
▪ Retentate Sweep
Applications:
➢ Carbon capture with reactive membranes (sweep = humidity)
➢ High temperature reactive membranes (sweep = steam)
➢ Membrane gas contactor (sweep = air)
Feed
QIN xIN
Retentate
QR xOUT
Permeate
QP y
Sweep Qs
Feed
QIN xIN
Retentate
QR xOUT
Permeate
QP ySweep
Qs
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Plan
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Plan – Case Studies with live presentations▪ Case 1
➢ Tsuru et al., 1995 – “Permeators and continuous membrane columns with retentate”
➢ Experimental validation of our code
➢ ProsimPlus®
▪ Case 2
➢ Hao et al., 2014 – “Gas/gas membrane contactor – An emerging membrane”
➢ The benifit of a sweep mode flow
➢ Aspen HYSYS®
▪ Case 3
➢ Gas drying – a previous study with a company
➢ An industrial case
➢ AspenPlus®
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Case 1Experimental validation of our code
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Rb: Retentate Recycle Ratio
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ProsimPlus®
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Points: experimental data from Tsuru et al. (1995)Lines: simulation from Prosim®
Case 2The benefit of a sweep mode flow
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Interesting when a compound has a high permeability value compared to the other compounds
Faire courbes avec driving force avec et sans sweep !!
𝑪𝑶𝟐 Removal = 𝟏 −𝒙𝒓𝒆𝒔𝒊𝒅𝒖𝒆.𝑸𝒓𝒆𝒔𝒊𝒅𝒖𝒆
𝒙𝒊𝒏 .𝑭𝑬𝑬𝑫 𝒄𝒐𝟐
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We keep an important driving force along the entire length of the membrane
Effect of sweep ratioRCO2: from 40 to 90%
Effect of pressure ratioRCO2 : from 80 to 95%
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Aspen HYSYS®
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Case 3An industrial case
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Real membrane from Beko (https://www.beko-technologies.com/)
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AspenPlus®
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Sensitivity Results Curve
QRR MOL/SEC
XH
2O
RET
YH
2O
PERM
0.000 0.025 0.050 0.075 0.100 0.125 0.150 0.175 0.200 0.225 0.250 0.275 0.300 0.325 0.350 0.375 0.400 0.425 0.450 0.475 0.500 0.525 0.550 0.575 0.600 0.625 0.650 0.675 0.700 0.725 0.750 0.775 0.800 0.825 0.850 0.8750.000
0.002
0.004
0.006
0.008
0.010
0.012
0.014
0.016
0.018
0.020
0.022
0.024
0.026
0.028
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
0.065
0.070
0.075
0.080
0.085
0.090
0.095
0.100
0.105
0.110
0.115
0.120
0.125
0.130
0.135
0.140
0.145
0.150
0.155
0.160
0.165
0.170
0.175
0.180
0.185
0.190
YH2OPERM
XH2ORET
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Sweep mode : removal fraction increase with the sweep ratio
Conclusion
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Conclusion
✓ An important advantage of using sweep gas is to generate a driving force for membrane separation without an extra compression machine
✓ Nevertheless, it has the inherent feature of diluting the permeate
✓ Interesting when a compound has a high permeability value compared to the other compounds
✓ The development of numerical tools, such as MEMSIC or SWEEP, as CAPE-OPEN unit operations it’s a real asset for engineers who want to do:
➢ Optimization
➢ Revamping
➢ Process synthesis
➢ …
✓ Future development: equivalent tools for G/L or L/L separation
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