Carbon dioxide capture from existing coal-fired power plants

Technical Report · Fri Dec 15 04:00:00 EST 2006

OSTI ID:20923766

During 1999-2001 ALSTOM Power Inc.'s Power Plant Laboratories and others evaluated the feasibility of alternate CO{sub 2} capture technologies applied to an existing US coal-fired electric power plant. The power plant analysed was the Conesville No. 5 unit, operated by AEP of Columbus, Ohio. This unit is a nominal 450 MW, pulverized coal-fired, subcritical pressure steam plant. One of the CO{sub 2} capture concepts investigated was a post-combustion system, which used the Kerr-McGee/ABB Lummus Global, Inc.'s commercial MEA process. More than 96% of CO{sub 2} was removed, compressed, and liquefied for usage or sequestration from the flue gas. Based on results from this study a follow-up study is investigating the post-combustion capture systems with amine scrubbing as applied to the Conesville No. 5 unit. The study evaluated the technical and economic impacts of removing CO{sub 2} from a typical existing US coal-fired electric power plant using advanced amine-based post combustion CO{sub 2} capture systems. The primary impacts are quantified in terms of plant electrical output reduction, thermal efficiency, CO{sub 2} emissions, retrofit investment costs, and the incremental cost of generating electricity resulting from the addition of the CO{sub 2} capture systems. An advanced amine CO{sub 2} scrubbing system is used for CO{sub 2} removal from the flue gas stream. Four (90%, 70%, 50%, and 30%) CO{sub 2} capture levels were investigated in this study. These results indicate that the advanced amine provided significant improvement to the plant performance and economics. Comparing results with recent literature results for advanced amine based capture systems (Econamine FG{sup +} and KS-1) as applied to utility scale coal fired power plants shows very similar impacts.

• Research Organization: National Energy Technology Laboratory (USA). Office of Systems Analyses and Planning Division
• OSTI ID: 20923766
• Report Number(s): DOE/NETL--401/120106
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
AMINES
CAPTURE
CARBON DIOXIDE
COAL
COMBINED-CYCLE POWER PLANTS
COST
ECONOMIC IMPACT
ELECTRIC POWER
FOSSIL-FUEL POWER PLANTS
INVESTMENT
MATERIALS RECOVERY
NATURAL GAS
OHIO
ORGANIC SOLVENTS
PULVERIZED FUELS
REGENERATION
RETROFITTING
THERMAL EFFICIENCY
USA