The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2014
Filed:
Jul. 10, 2009
Makoto Takafuji, Tokyo, JP;
Toshiyuki Suda, Tokyo, JP;
Makoto Takafuji, Tokyo, JP;
Toshiyuki Suda, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
A circulating fluidized bed gasification furnace has a combustion furnace, a cyclone collectorto which a combustion exhaust gasfrom the combustion furnaceis introduced to collect a circulating medium, a fluidized bed gasification furnacefor formation of a fluidized bedby introducing the circulating mediumcollected in the cyclone collectorthrough a downcomerand by supplying a gasification agentfrom below and for gasification of a raw materialby supplying the same to a freeboard, and a circulation flow passagefor return of the circulating medium and unreacted char not gasified in the gasification furnaceto the combustion furnace. The downcomerconnected to the collectorhas a lower end connected through a sealerto the freeboardin the gasification furnace. A raw material supply unitis arranged to supply the raw materialto the circulating mediumbetween the sealerand the freeboard