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:
Apr. 23, 2013
Filed:
Mar. 18, 2009
Hisanori Nukumi, Tokyo, JP;
Tomoyuki Katagiri, Tokyo, JP;
Hisanori Nukumi, Tokyo, JP;
Tomoyuki Katagiri, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
Upon cold startup of a gasification facility, a fluidized airis supplied to a combustion furnaceto fluidize a combustion-furnace fluidized bedwhile a preheating fuelis supplied to the combustion furnace to preheat the fluidized bedup to an autoignition temperature of coal. Then, a coalis charged to the combustion furnaceto heat the fluidized bedand bed material is circulated between the combustion and gasification furnacesandfor heating. Upon startup and shutdown of the gasification facility, steamfrom an exhaust heat recovery boilerin heat exchange with an exhaust gasfrom the combustion furnaceis supplied to the gasification furnaceto purge the gasification furnaceand a lead-out passagewith the steamutilizing the exhaust heat.