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Large scale economics of a precipitating potassium carbonate CO 2 capture process for black coal power generation
Author(s) -
Anderson Clare,
Ho Minh,
Harkin Trent,
Wiley Dianne,
Hooper Barry
Publication year - 2014
Publication title -
greenhouse gases: science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.45
H-Index - 32
ISSN - 2152-3878
DOI - 10.1002/ghg.1384
Subject(s) - flue gas , tonne , electricity , potassium carbonate , coal , electricity generation , cost of electricity by source , carbon dioxide , waste management , carbonate , environmental science , clean coal , process engineering , chemistry , power (physics) , engineering , thermodynamics , electrical engineering , physics , organic chemistry
Abstract Potassium carbonate (K 2 CO 3 ) solvents offer a lower cost and environmentally benign alternative to the traditional amine‐based solvents for post‐combustion capture of carbon dioxide (CO 2 ) from power station flue gases. The CO2CRC is developing a precipitating K 2 CO 3 process, termed UNO MK 3, which has the potential for significant cost reductions. The costs have been calculated based on capturing 90% of the CO 2 emissions from a new build black coal (Illinois No. 6) power station with a net output of 550 MW. With the UNO MK 3 process for CO 2 capture, the cost of electricity is predicted to be as low as $73/MWh and the cost of capture as low as $21/tonne of CO 2 avoided. The cost of electricity with the UNO MK 3 process represents as low as a 24% increase in the cost of electricity, which meets the target set by the US Department of Energy for capture technologies of adding less than 35% to the cost of electricity.