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Continuous fine ash depressurization system

United States Patent

8,066,789
November 29, 2011
View the Complete Patent at the US Patent & Trademark Office
A system for depressurizing and cooling a high pressure, high temperature fine solid particles stream having entrained gas therein. In one aspect, the system has an apparatus for cooling the high pressure, high temperature fine solid particles stream having entrained gas therein and a pressure letdown device for depressurization by separating the cooled fine solid particles from a portion of the fine solid particles stream having entrained gas therein, resulting in a lower temperature, lower pressure outlet of solid particles for disposal or handling by downstream equipment.
Liu; Guohai (Birmingham, AL), Peng; Wan Wang (Birmingham, AL), Vimalchand; Pannalal (Birmingham, AL)
Southern Company (Birmingham, AL)
12/ 426,669
20100263342
April 20, 2009
ACKNOWLEDGMENT This invention was made with some government support under Cooperative Agreement Number DE-FC21-90MC25140 awarded by the United States Department of Energy. The United States government has certain rights in the invention.