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

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.
Authors:
;
Publication Date:
OSTI Identifier:
1172145
Report Number(s):
8,975,464
13/993,903
DOE Contract Number:
FC26-07NT43089
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Dec 16
Research Org:
Research Triangle Institute, Research Triangle Park, NC (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES