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

Abstract

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

Research Org.:

NEWVISTAS CAPITAL, LLC., Provo, UT (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1393514

Patent Number(s):

9766011

Application Number:

15/182,494

Assignee:

NEWVISTAS CAPITAL, LLC

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25J - LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

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F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25J - LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE

F25J2240/02 - Expansion of a process fluid in a work-extracting turbine
F25J3/067 - {separation of carbon dioxide

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2258/0283 - Flue gases
B01D53/002 - {by condensation}

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25J - LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE

F25J2220/82 - Separating low boiling, i.e. more volatile components, e.g. He, H2, CO, Air gases, CH4
F25J2270/90 - External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
F25J2270/12 - External refrigeration with liquid vaporising loop

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2259/65 - Employing advanced heat integration, e.g. Pinch technology
B01D2257/504 - Carbon dioxide

F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25J - LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS {OR LIQUEFIED GASEOUS} MIXTURES BY PRESSURE AND COLD TREATMENT {OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE

F25J2210/70 - Flue or combustion exhaust gas
F25J2205/20 - using solidification of components
F25J2290/12 - Particular process parameters like pressure, temperature, ratios
F25J2280/40 - Control of freezing of components

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DOE Contract Number:  

AR0000101

Resource Type:

Patent

Resource Relation:

Patent File Date: 2016 Jun 14

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING