Abstract
The objective of this paper is to compare the two technologies chemical looping combustion (CLC) for inherent CO2-capture, and Calcium looping-based (CaL) CO2-capture when applied to a coal-based IGCC power plant, in terms of system efficiency, overall plant efficiency, CO2-capture percentage and cost. It was found that a CLC-based CO2 capture system is more efficient than a CaL-based CO2 capture system. However, both the chemical looping processes lead to higher efficiencies than a conventional solvent-based pre-combustion CO2 capture. The capital cost and cost of electricity of the CLC-based CO2- capture power plant were also found to be lower than a conventional pre-combustion CO2-capture for an IGCC power plant.
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