In order to sustain the operational competitiveness of fossil fuel plants in a carbon constrained world, these plants must adopt clean technologies to minimize emissions of air pollutants and to reduce their CO_2 emissions through capture and storage processes. Different CO_2 capture technologies have been proposed, such as absorption (chemical or physical), adsorption, cryogenic and membrane separation. In this poster, we present a comparative study of a few processes for cryogenic CO_2 capture and compression, as applied to advanced oxy-fuel power plants. It should be noted that, the feed gas could also be from other fossil fuel combustion processes, and hence, the CO_2 composition as well as the impurities in the feed gas may vary accordingly. For the oxy-fuel combustion case, the impact of oxygen purity and its influence on the overall capture process is discussed in this poster.
展开▼
