5.王大銘-co2 capture membrane

8/12/2019 5. -CO2 Capture Membrane

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Membranes for Post-Combustion Carbon

Capture --- Current State and Future Prospects

Da-Ming Wanga,c, Chien-Chieh Hub,c, Kueir-Rarn Leeb,c

Kuo-Lun Tunga,c, Juin-Yih Laib,c

aDepartment of Chemical Engineering, National Taiwan UniversitybDepartment of Chemical Engineering, Chung Yuan University

cR&D Center for Membrane Technology, Chung Yuan University


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Carbon Capture

DOE Target

By 2020

have available for commercial deployment,

technologies that achieve: 90% CO2 capture

< 35% increase in COE (cost of electricity)

Source: DOE Fossil Energy (FE)

about US$ 25/ ton CO2


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Economics of Carbon Capture

by MEA absorption

Source: G.T. Rochelle, Science, 325,2009


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Carbon Capture by Membranes


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Mechanisms for Membrane Gas Separation

Source: Basic research needs for carbon capture: beyond 2020


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Advantages of Membrane Processes

Lower energy use because no phase changeoccurs during separation

Small footprint


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Characterization of Membrane Performance

d

)(/ ,, ApermAfeedAA ppPj d

)(/ ,, BpermBfeedBB ppPj d

d/A

P permeance of A

d/B

P permeance of B

BA PP / membrane selectivity

of A over B


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Membrane Development

Source: Merkel et al., Journal of Membrane Science, 359, 2010


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Poly(ether-block-ester)

less than 50 nm thick

silica membrane

zeolite membrane

slicalite

zeolite membrane

SAPO-34

carbon molecular sieve

metal organic framework

MgMOF-74

30000 gpu, selctivity 30


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Current state of CO2 capture membrane in CMT

under the support of Nation S&T program-Energy

CMT-1 membrane

Selectivity=120

Permeance=500gpu

CMT-3 membrane

Selectivity=22

Permeance=1100gpu

CMT-2 membrane

Selectivity=56Permeance=590gpu

CMT-1

CMT-2

CMT-

3


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Challenge of High Throughput

For a 600 MW plant, 90% CO2capture, 11.6 %

CO2in the feed, 2.1 million m2membranes(1000 gpu, selectivity 50) are needed



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Challenge of High Throughput

Membrane modules with high packing densityare needed

Plate and Frame ---- 200 m2/m3

Hollow Fiber ---- 10,000 m2/m31 million m2 corresponds to 1000 m3


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Asymmetric composite membrane

Continuous flat-sheet membrane

fabrication facility

U.S. patent 7,823,530 B2 2010


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Future perspective --- IDevelop membranes with higher CO2 permeance


to meet DOE target


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Future perspective --- IILower the membrane cost

To meet DOE target

3000 gpu

selectivity 100US$ 30/m2


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Future perspective --- III

Efficient process design

enrich CO2 in the flue gas from 12% to 18%reduce membrane area from 2.1 to 1.3 million m2



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Future perspective --- IV

To reduce footprint, hollow fiber modules are neededLarge-scale demonstration is needed

The largest membrane unit under test is 20 tons CO2/day

Source: CO2 capture technology, Global CCS Institute


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Membrane contactor for

CO2 capture

Hydrophobic hollow-fiber membranes are used to providethe gas-liquid contact surface area


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Set up a membrane contactor unit

capacity 5 m3/h


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Stretching system

Preparation of PP hollow-fiber membranes


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Research work at R&D center for

membrane technology, Chung Yuan

University

II

Current State and future perspective of

CO2capture by membrane processes

I

Conclusions


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Acknowledgement

National Science and Technology Program -- Energy

Ministry of Economic Affairs, Taiwan

LCY company, Taiwan


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R&D Center for Membrane Technology

Awarded CoE Program on Membrane Technologyfrom Ministry of Education in 2006


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R D Center for Membrane Technology


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5.王大銘-co2 capture membrane

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