Title: Separation of CO₂ during combustion of coal in a pressurised fluidised bed

Authors: Ralf Wernke, Thomas Wild, Christian Bergins, Karl Strauss

Addresses: Department Biochemical and Chemical Engineering, Chair Energy Process Engineering and Fluid Dynamics, University of Dortmund, Emil-Figge-Str. 68, 44221 Dortmund, Germany. ' Department Biochemical and Chemical Engineering, Chair Energy Process Engineering and Fluid Dynamics, University of Dortmund, Emil-Figge-Str. 68, 44221 Dortmund, Germany. ' Department Biochemical and Chemical Engineering, Chair Energy Process Engineering and Fluid Dynamics, University of Dortmund, Emil-Figge-Str. 68, 44221 Dortmund, Germany. ' Department Biochemical and Chemical Engineering, Chair Energy Process Engineering and Fluid Dynamics, University of Dortmund, Emil-Figge-Str. 68, 44221 Dortmund, Germany

Abstract: The combustion of coal is accompanied by CO₂ emissions. This carbon dioxide can be separated from the flue gases in the Combustion Chamber (CC) by means of adsorption on calcium oxide (carbonation) which in turn can be regenerated in a calcination process. A description of the processes and the integration in a whole power station that serves a district heating network and generates electricity (cogeneration) will be presented.

Keywords: carbonation; calcination; carbon dioxide separation; CO₂ separation; coal combustion; pressurised fluidised beds; calcium oxide adsorption; district heating; cogeneration.

DOI: 10.1504/IJGEI.2007.015879

International Journal of Global Energy Issues, 2007 Vol.28 No.2/3, pp.264 - 274

Published online: 27 Nov 2007 *

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