Optimized heat exchange in a CO2 de-sublimation process

Title: Optimized heat exchange in a CO2 de-sublimation process

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.

Inventors:: Baxter, Larry; Terrien, Paul; Tessier, Pascal; Hoeger, Christopher

Issue Date:: 2017-09-19

OSTI Identifier:: 1393514

Assignee:: NEWVISTAS CAPITAL, LLC ARPA-E

Patent Number(s):: 9,766,011

Application Number:: 15/182,494

Contract Number:: AR0000101

Resource Relation:: Patent File Date: 2016 Jun 14

Research Org:: NEWVISTAS CAPITAL, LLC., Provo, UT (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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Other works cited in this record:

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