5.王大銘-CO2 Capture Membrane
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Transcript of 5.王大銘-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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Membrane Development
Source: Merkel et al., Journal of Membrane Science, 359, 2010
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Membrane Development
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
Source: Merkel et al., Journal of Membrane Science, 359, 2010
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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
Source: Merkel et al., Journal of Membrane Science, 359, 2010
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
Source: Merkel et al., Journal of Membrane Science, 359, 2010
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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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