Carbon Dioxide Separation Technology To
Increase CO2 Supply for EOR in Wyoming
● Goal: Supply cheap flue-gas CO2 for EOR
● Approach: Develop a step-out technology through
novel cost-effective separation materials
Youqing Shen
Kaspars Krutkramelis, Xin Hu
Maciej Radosz (Speaker)
Jianbin Tang, George Hu (former participants)
(Others part-time)
University of Wyoming • January 14, 2009 • EOR Commission and TAB Meeting
CO2 Shortage?
Separator
500-700 million
tons of CO2 needed
Wyoming CO2 production:
Coal >52 million ton/yr (2,700 MMSCFD)
LaBarge <5 million ton/yr (250 MMSCFD)
Other challenges: compression, pipeline, storage
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LaBarge vents ~1.5 MMt/yr @65 psi and ~2.3 MMt @0 psi; 1 metric ton Æ 0.019 MMSCF
2
Separation Process Concept: “Carbon Filter”
Heat Exchanger
Flue Gas
Steam
Air
25ºC
Sorption
CO2-Free
Flue Gas
130ºC
Heating
95% CO2
25ºC
Cooling
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Air
3
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Cost example in million $
Vessel
Blower
Sorbent
Misc
Equipment
1.8
6.0
2.4
0.8
11.0
Electricity
13.1
Steam
Maintenance
Misc
Annual
20.6
4.0
0.8
38.5
$/ton CO2
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Radosz, Hu, Krutkramelis, Shen
Industrial Eng. Chem. Res.
2008, 47, 3783-3794
Amine absorption benchmark 47 $/ton CO2
($2.50/MCF 1 ton Æ 19 MCF)
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Co-Funding Justification
™
“Carbonaceous Sorption …has potential to be the
lowest cost alternative. Advantages:
low capital cost
simple design
domestic technology for Powder River Basin coals
could be used at our power plants…”
™
“This technology has promise of being able to capture
CO2 at a lower cost than what is available from
competing technologies.”
™
“…Proposed carbon capture concept has potential for
significant cost reductions…. can increase the
probability of efficient carbon sequestration…. can
result in coal fired power plants with flue gas
emissions at nearly zero…”
EPRI and Utility Partners
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New
Experimental
Unit Built
K. Krutkramelis
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9
Mass-Spec Real-Time Gas Analyzer
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Funded by School of Energy Resources
New CO2 Separation Unit
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A ds orption B reakthroug h C urve
12%
11%
10%
9%
% C O2 In E ffluent
8%
7%
6%
5%
4%
3%
2%
1%
12% CO2/N2 Mixture, 4 L/min
0%
0
2
4
6
8
10
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time (min)
12
14
Conclusion
Membranes, pressure-swing adsorption:
expensive compression
™ Amine absorption: expensive regeneration
™ UW Carbon Filter Technology a less
expensive alternative for CO2 separation
™ Scale-up underway co-funded by State,
EPRI, Utilities
™
Soft Materials Laboratory
uwyo.edu/sml
[email protected]
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13
13
FY09-10 Funding Outlook
™
Lab research – EORI
™
Field demo tests – State’s Clean Coal,
EPRI, Utilities (through Supercritical
Fluids LLC)
@750k
™
EPA et al. (pending)
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@526k
@100k+?
Sorbent Preparation
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Sorbent Characterization: MSB Apparatus
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2009-2010 Plans
● Development of enhanced separation materials
● Economic evaluation of the best materials
● Lab capacity, selectivity, breakthrough data
● Lab tests in an integrated bench-scale unit
● Field tests in 2 power plants, summer/fall 2009
● Analysis and documentation, spring 2010
● External partners: State's Clean Coal Program,
EPRI, Utility 1, Utility 2, and Supercritical Fluids
LLC
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17
EORI Review I
™
™
™
™
™
™
™
This program is consistent with EORI’s mission.
EORI sorbents... reduce the cost...
Value-added: assist Wyoming to increase its available
EOR-grade CO2
Cost evaluations, assumptions, benchmarking well laid
out and reasonable
Authors honest about tradeoffs and engineering needs
Very nice job of leveraging existing funding with
industrial funding
This project should be continued so that engineering
needs may be thoroughly evaluated for EOR
applications.
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Backup
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