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LOW TEMPERATURE HEAT EXCHANGER SYSTEM AND METHOD

United States Patent Application

20130081426
A1
View the Complete Application at the US Patent & Trademark Office
A device for capturing carbon dioxide includes a supply source for supplying a compressed flue gas; a multi-stream heat exchanger for pre-cooling the compressed flue gas and a gas expansion device located downstream of the multi-stream heat exchanger. The multi-stream heat exchanger is configured to separate the compressed flue gas into a first compressed stream and a second compressed stream. The gas expansion device is configured to expand the compressed flue gas into a first sub-stream of carbon dioxide depleted gas and a second sub-stream of carbon dioxide. The device includes a first recirculation channel that recirculates a portion of the first sub-stream into the multi-stream heat exchanger and a second recirculation channel that recirculates at least a portion of the second sub-stream into the multi-stream heat exchanger, wherein the multi-stream heat exchanger is configured to pre-cool the compressed flue gas using the first sub-stream and the second sub-stream.
Lissianski, Vitali Victor (Schenectady, NY), Shisler, Roger Allen (Ballston Spa, NY), Gonzalez, Miguel Angel (Garching, DE)
13/ 250,804
September 30, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT [0001] This invention was made with United States Government support under contract DE-AR0000101, awarded by the Department of Energy (DoE). The United States Government has certain rights in the invention.