Abstract
For future electricity generation, it is expected that fossil fuels will be utilized with increasing tendency in conversion processes with high efficiencies and, hence, low specific CO 2-emissions. Such a system is an Integrated Coal Gasification Combined Cycle plant (ICGCC). A further reduction of CO 2-emission from power plants can be achieved by the recovery of CO 2 from the product gases and its subsequent disposal in depleted gas reservoirs or aquifers. The study was carried out for the CO 2-recovery from a brown coal based ICGCC-plant. It includes the integration of a CO-shift-converter with a sulphur resistant catalyst and a CO 2-scrubber behind the gas cleaning step. With the proposed configuration it seems to be possible to convert more than 90 % of the CO to CO 2 in two stages. After a detailed description of the technical additions to the ICGCC-system the paper will present calculated data with regard to energy requirements, total plant efficiency and estimations of their effect on the investment and electricity production costs.
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