systematic design of membrane systems for co2 capture

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Synthesis and optimization of membrane systems for CO 2 capture applications Karl Lindqvist & Rahul Anantharaman SINTEF Energy Research PRES 2014 Prague, August 24, 2014

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Gas separation membranes are considered among one of the promising technologies for post-combustion capture and has been studied extensively. Membrane processes are conceptually very simple. However, with existing membrane properties (selectivity and permeability) and other limitations, a single stage membrane process is not feasible to ensure CO2 purity of 95 in the case of post-combustion capture. Traditionally, membrane design is done using sensitivity analysis on a single separation stage or a layout found by trial and error, since it is difficult to simultaneously find a good combination of parameters and layout that achieve the desired target. This presentation will detail the use of systematic methods of process synthesis in the development of a novel graphical approach for the design of multi-stage membrane systems. Incorporating the inherent trade-off between installed area and energy consumption in membrane systems, the methodology utilizes the cost of CO2 removal in the design process. The visual method provides the user with insight in the form of attainable regions to guide the design process. The method allows comparison and evaluation of different membranes in a clear and consistent manner and helps provide feedback to membrane developers.

TRANSCRIPT

Page 1: Systematic design of membrane systems for CO2 capture

Synthesis and optimization ofmembrane systems for CO2 captureapplications

Karl Lindqvist & Rahul AnantharamanSINTEF Energy Research

PRES 2014Prague, August 24, 2014

Page 2: Systematic design of membrane systems for CO2 capture

2

Outline

Background & Motivation

Membrane system design

Attainable region approach to membrane system design

Summary

Page 3: Systematic design of membrane systems for CO2 capture

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Integrated Assessment in BIGCCS

I Systematic benchmarking of CO2 capture processes usingconsistent boundary conditions to

– Identify potential of capture processes– Provide directions for future research such as material development

I Muti-scale modeling of processes for integrated assessment

Page 4: Systematic design of membrane systems for CO2 capture

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Integrated Assessment in BIGCCS

I Systematic benchmarking of CO2 capture processes usingconsistent boundary conditions to

– Identify potential of capture processes– Provide directions for future research such as material development

I Muti-scale modeling of processes for integrated assessment

Page 5: Systematic design of membrane systems for CO2 capture

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Integrated Assessment in BIGCCS

I Systematic benchmarking of CO2 capture processes usingconsistent boundary conditions to

– Identify potential of capture processes– Provide directions for future research such as material development

I Muti-scale modeling of processes for integrated assessment

Page 6: Systematic design of membrane systems for CO2 capture

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Integrated Assessment in BIGCCS

I Systematic benchmarking of CO2 capture processes usingconsistent boundary conditions to

– Identify potential of capture processes– Provide directions for future research such as material development

I Muti-scale modeling of processes for integrated assessment

Page 7: Systematic design of membrane systems for CO2 capture

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Single Stage Membrane

I Each membrane stage involves trade-off between product purityand capture rate.

– Played out as a trade-off between driving force (compression work)and membrane area.

I Significant work in literature on “sensitivity” analysis to designsingle stage systems.

Page 8: Systematic design of membrane systems for CO2 capture

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Single Stage Membrane

I Each membrane stage involves trade-off between product purityand capture rate.

– Played out as a trade-off between driving force (compression work)and membrane area.

I Significant work in literature on “sensitivity” analysis to designsingle stage systems.

Page 9: Systematic design of membrane systems for CO2 capture

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Single Stage Membrane

I Each membrane stage involves trade-off between product purityand capture rate.

– Played out as a trade-off between driving force (compression work)and membrane area.

I Significant work in literature on “sensitivity” analysis to designsingle stage systems.

Page 10: Systematic design of membrane systems for CO2 capture

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Motivation

I Multi-stage systems required for post-combustion capture to95% product purity.

I For multi-stage process the design complexity increases further.I Identifying the “best” configuration for a given membrane is not

straight-forward.

Page 11: Systematic design of membrane systems for CO2 capture

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Motivation

I Multi-stage systems required for post-combustion capture to95% product purity.

I For multi-stage process the design complexity increases further.I Identifying the “best” configuration for a given membrane is not

straight-forward.

Page 12: Systematic design of membrane systems for CO2 capture

5

Motivation

I Multi-stage systems required for post-combustion capture to95% product purity.

I For multi-stage process the design complexity increases further.I Identifying the “best” configuration for a given membrane is not

straight-forward.

Page 13: Systematic design of membrane systems for CO2 capture

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Parametric variation based design

Page 14: Systematic design of membrane systems for CO2 capture

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Optimization based design

Page 15: Systematic design of membrane systems for CO2 capture

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Motivation for new approach

Would it be possible to develop a visual design methodology:I visually compare membranes?I indicates the potential of a membrane for different applications?I multiple stages can be designed using a single figure?I capture cost is incorporated to accurately reflect the area-energy

trade-off?

Page 16: Systematic design of membrane systems for CO2 capture

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Motivation for new approach

Would it be possible to develop a visual design methodology:I visually compare membranes?I indicates the potential of a membrane for different applications?I multiple stages can be designed using a single figure?I capture cost is incorporated to accurately reflect the area-energy

trade-off?

Page 17: Systematic design of membrane systems for CO2 capture

8

Motivation for new approach

Would it be possible to develop a visual design methodology:I visually compare membranes?I indicates the potential of a membrane for different applications?I multiple stages can be designed using a single figure?I capture cost is incorporated to accurately reflect the area-energy

trade-off?

Page 18: Systematic design of membrane systems for CO2 capture

8

Motivation for new approach

Would it be possible to develop a visual design methodology:I visually compare membranes?I indicates the potential of a membrane for different applications?I multiple stages can be designed using a single figure?I capture cost is incorporated to accurately reflect the area-energy

trade-off?

Page 19: Systematic design of membrane systems for CO2 capture

9

Attainable region approach

Page 20: Systematic design of membrane systems for CO2 capture

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Attainable region approach

Page 21: Systematic design of membrane systems for CO2 capture

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Attainable region approach

Page 22: Systematic design of membrane systems for CO2 capture

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Attainable region approach

Page 23: Systematic design of membrane systems for CO2 capture

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Attainable region approach

I Visual representation to identify potential of a membraneI Capture ratio is fixed in the figureI One figure for a membrane (and capture ratio)I Suitable for all feed compositions

Page 24: Systematic design of membrane systems for CO2 capture

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Attainable region approach

I Visual representation to identify potential of a membraneI Capture ratio is fixed in the figureI One figure for a membrane (and capture ratio)I Suitable for all feed compositions

Page 25: Systematic design of membrane systems for CO2 capture

10

Attainable region approach

I Visual representation to identify potential of a membraneI Capture ratio is fixed in the figureI One figure for a membrane (and capture ratio)I Suitable for all feed compositions

Page 26: Systematic design of membrane systems for CO2 capture

10

Attainable region approach

I Visual representation to identify potential of a membraneI Capture ratio is fixed in the figureI One figure for a membrane (and capture ratio)I Suitable for all feed compositions

Page 27: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of selectivity

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

pur

ity

Feed composition

α = 50 PCO2 = 10.4 m3/(m2.h.bar) CCRi = 0.9

Page 28: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of selectivity

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

pur

ity

Feed composition

α = 200 PCO2 = 0.2 m3/(m2.h.bar) CCRi = 0.9

Page 29: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of selectivity

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

pur

ity

Feed composition

α = 50/200 PCO2 = 10.4/0.2 m3/(m2.h.bar) CCRi = 0.9

Page 30: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of permeance

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

pur

ity

Feed composition

α = 200 PCO2 = 0.2 m3/(m2.h.bar) CCRi = 0.9

Page 31: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of permeance

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/ret

enta

te p

urity

Feed composition

α = 200 PCO2 = 1 m3/(m2.h.bar) CCRi = 0.9

Page 32: Systematic design of membrane systems for CO2 capture

13

Attainable region - Effect of capture rate

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/ret

enta

te p

urity

Feed composition

α = 50 PCO2 = 5.94 m3/(m2.h.bar) CCRi = 0.6

Page 33: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of capture rate

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/ret

enta

te p

urity

Feed composition

α = 50 PCO2 = 5.94 m3/(m2.h.bar) CCRi = 0.9

Page 34: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of capture rate

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/ret

enta

te p

urity

Feed composition

α = 50 PCO2 = 5.94 m3/(m2.h.bar) CCRi = 0.95

Page 35: Systematic design of membrane systems for CO2 capture

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Attainable region - Effect of capture rate

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/ret

enta

te p

urity

Feed composition

α = 50 PCO2 = 5.94 m3/(m2.h.bar) CCRi = 0.6/0.95

Page 36: Systematic design of membrane systems for CO2 capture

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Application

I Post-combustion capture - 10% CO2, 90% N2

I Membrane 1 - CO2 permeance: 10.4 m3(STP)/(m2.h.bar),Selectivity: 50

I Membrane 2 - CO2 permeance: 0.2 m3(STP)/(m2.h.bar),Selectivity: 200

I Cost data taken from Merkel et al. (2010)

Page 37: Systematic design of membrane systems for CO2 capture

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Application - Attainable region

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Perm

eate

/Ret

enta

te p

urity

Feed composition

64

32

16

8

4

2

CCR = 90%

Page 38: Systematic design of membrane systems for CO2 capture

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Application - Attainable region

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

32

16

8

4

2

CO2 product purity

CCR = 90%

Page 39: Systematic design of membrane systems for CO2 capture

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Application - Attainable region

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Page 40: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Page 41: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Page 42: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Page 43: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Page 44: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 45: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Stage 3

Page 46: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 2

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Page 47: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membrane 2

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200 α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 48: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membranes 1 & 2

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Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 49: Systematic design of membrane systems for CO2 capture

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Min Cost Design - Membranes 1 & 2

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200 α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 50: Systematic design of membrane systems for CO2 capture

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Attainable Region - 2 stage design

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 51: Systematic design of membrane systems for CO2 capture

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Attainable Region - 2 stage design

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 52: Systematic design of membrane systems for CO2 capture

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Attainable Region - 2 stage design

0

0.1

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 2

Stage 1

Page 53: Systematic design of membrane systems for CO2 capture

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Attainable Region - 2 stage design

0

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0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Perm

eate

/Ret

enta

te p

urity

Feed composition

64

64

32

32

16

8

4

2

16 8

α = 200

α = 50

α = 50

α = 200

CO2 product purity

CCR = 90%

Stage 1

Stage 2

Page 54: Systematic design of membrane systems for CO2 capture

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Summary

I A novel and elegant method for consistent design of membranesystems has been developed.

I The visual method allows for identifying the potential ofmembranes.

I A simple stage-wise method is used to design the process.I CO2 capture cost is incorporated in the design process.

Page 55: Systematic design of membrane systems for CO2 capture

20

Summary

I A novel and elegant method for consistent design of membranesystems has been developed.

I The visual method allows for identifying the potential ofmembranes.

I A simple stage-wise method is used to design the process.I CO2 capture cost is incorporated in the design process.

Page 56: Systematic design of membrane systems for CO2 capture

20

Summary

I A novel and elegant method for consistent design of membranesystems has been developed.

I The visual method allows for identifying the potential ofmembranes.

I A simple stage-wise method is used to design the process.I CO2 capture cost is incorporated in the design process.

Page 57: Systematic design of membrane systems for CO2 capture

20

Summary

I A novel and elegant method for consistent design of membranesystems has been developed.

I The visual method allows for identifying the potential ofmembranes.

I A simple stage-wise method is used to design the process.I CO2 capture cost is incorporated in the design process.