LOW TEMPERATURE HEAT EXCHANGER SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Apr 4, 2013
app pub date -
Sep 30, 2011
filing date -
Sep 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
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.
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