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Title: Heat recovery from sorbent-based CO.sub.2 capture

Patent ·
OSTI ID:1172145
;

The present invention provides a method of increasing the efficiency of exothermic CO.sub.2 capture processes. The method relates to withdrawing heat generated during the exothermic capture of CO.sub.2 with various sorbents via heat exchange with a working fluid. The working fluid is provided at a temperature and pressure such that it is in the liquid state, and has a vaporization temperature in a range such that the heat arising from the reaction of the CO.sub.2 and the sorbent causes a phase change from liquid to vapor state in whole or in part and transfers heat from to the working fluid. The resulting heated working fluid may subsequently be used to generate power.

Research Organization:
Research Triangle Institute, Research Triangle Park, NC (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-07NT43089
Assignee:
Research Triangle Institute (Research Triangle Park, NC)
Patent Number(s):
8,975,464
Application Number:
13/993,903
OSTI ID:
1172145
Resource Relation:
Patent File Date: 2011 Dec 16
Country of Publication:
United States
Language:
English

References (3)

Method and arrangement for the thermal regeneration of charged adsorption materials patent June 1982
Absorbent Regeneration with Compressed Overhead Stream to Provide Heat patent-application February 2010
Integration of Pressure Swing Adsorption with a Power Plant for CO₂ Capture/Utilization and N₂ Production patent-application December 2013

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