A physical sorption process to produce dry CO? at high purity (>
98%) and high recovery (>
90%) from the flue gas taken before or after the FGD was demonstrated both in the lab and in the field (one ton per day scale). A CO? recovery of over 94% and a CO? purity of over 99% were obtained in the field tests. The process has a moisture, SOX, and Hg removal stage followed by a CO? adsorption stage. Evaluations based on field testing, process simulation and detailed engineering studies indicate that the process has the potential for more than 40% reduction in the capital and more than 40% reduction in parasitic power for CO? capture compared to MEA. The process has the potential to provide CO? at a cost (<
$40/tonne) and quality (<
1 ppm H?O, <
1 ppm SOX, <
10 ppm O?) suitable for EOR applications which can make CO? capture profitable even in the absence of climate legislation. The process is applicable to power plants without SOX, Hg and NOX removal equipment.