Skip to Content
Find More Like This
Return to Search

Multi-Stage Circulating Fluidized Bed Syngas Cooling

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A method and apparatus for cooling hot gas streams in the temperature range C. to C. using multi-stage circulating fluid bed (CFB) coolers is disclosed. The invention relates to cooling the hot syngas from coal gasifiers in which the hot syngas entrains substances that foul, erode and corrode heat transfer surfaces upon contact in conventional coolers. The hot syngas is cooled by extracting and indirectly transferring heat to heat transfer surfaces with circulating inert solid particles in CFB syngas coolers. The CFB syngas coolers are staged to facilitate generation of steam at multiple conditions and hot boiler feed water that are necessary for power generation in an IGCC process. The multi-stage syngas cooler can include internally circulating fluid bed coolers, externally circulating fluid bed coolers and hybrid coolers that incorporate features of both internally and externally circulating fluid bed coolers.
Liu, Guohai (Birmingham, AL), Vimalchand, Pannalal (Birmingham, AL), Guan, Xiaofeng (Birmingham, AL), Peng, WanWang (Birmingham, AL)
15/ 272,667
September 22, 2016
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with Government support under Agreement/Contract Number DE-NT0000749, awarded by the United States Department of Energy. The Government has certain rights in the invention.