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Optimized heat exchange in a CO2 de-sublimation process

United States Patent

9,766,011
September 19, 2017
View the Complete Patent at the US Patent & Trademark Office
The present invention is a process for removing carbon dioxide from a compressed gas stream including cooling the compressed gas in a first heat exchanger, introducing the cooled gas into a de-sublimating heat exchanger, thereby producing a first solid carbon dioxide stream and a first carbon dioxide poor gas stream, expanding the carbon dioxide poor gas stream, thereby producing a second solid carbon dioxide stream and a second carbon dioxide poor gas stream, combining the first solid carbon dioxide stream and the second solid carbon dioxide stream, thereby producing a combined solid carbon dioxide stream, and indirectly exchanging heat between the combined solid carbon dioxide stream and the compressed gas in the first heat exchanger.
Baxter; Larry (Orem, UT), Terrien; Paul (Baltimore, MD), Tessier; Pascal (Wilmington, DE), Hoeger; Christopher (Provo, UT)
NEWVISTAS CAPITAL, LLC (Provo, UT)
15/ 182,494
20160290714
June 14, 2016
GOVERNMENT LICENSE RIGHTS This invention was made with government support under Award No. DE-AR0000101 awarded by U.S. Department of Energy (DOE). The government has certain rights in the invention.