The dry carbonate process: Carbon dioxide recovery from power plant flue gas

RTI’s Dry Carbonate Process, a solid sorbent CO2 capture approach, has been developed as a retrofit technology for existing power plants. The process is based on the reversible reaction between sodium carbonate, CO2, and water vapor to form sodium bicarbonate. Concentrated CO2 is recovered by a ther...

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Bibliographic Details
Main Authors: Nelson, Thomas O., Coleman, Luke J.I., Green, David A., Gupta, Raghubir P.
Format: Conference Proceeding
Language:English
Subjects:
Adsorption process
Carbon dioxide
CO2 capture
Dry Carbonate
Sodium bicarbonate
Sodium carbonate
Solid sorbents
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Summary:RTI’s Dry Carbonate Process, a solid sorbent CO2 capture approach, has been developed as a retrofit technology for existing power plants. The process is based on the reversible reaction between sodium carbonate, CO2, and water vapor to form sodium bicarbonate. Concentrated CO2 is recovered by a thermal-swing process. Field testing of a prototype Dry Carbonate Process has been completed with a total of 235 h of operation using natural gas- and coal-derived flue gases. The Dry Carbonate demonstrated >90% CO2 capture and minimal adverse effects of exposure to SO2. Current R&D efforts are focussing on improving the process configuration and sorbent material to scale-up the process to a pilot unit capable of capturing 1 ton of CO2 per day.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2009.01.171