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:
Jan. 27, 2015
Filed:
Oct. 22, 2010
Tomoyuki Katagiri, Tokyo, JP;
Tomoyuki Katagiri, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
A charfeed rate at a rated point determined from a relationship between a current water vaporflow rate and a current raw materialcharge rate to a gasification furnaceis multiplied by a proper number determined from a relationship between a current gasification furnacetemperature and a current bed materialcirculated rate to calculate an actual charfeed rate. A subtraction is performed between a gross heat value of the charflowing into the combustion furnacedetermined on the basis of the calculated charfeed rate and a heat value required for keeping a top of the combustion furnaceat a commanded temperature determined from a relationship between the commanded temperature and an air flow rate in the furnaceto determine a heat value required for keeping the combustion furnaceat the commanded temperature. An auxiliary fuel operation rate is determined from the determined heat value to perform an advanced control for an auxiliary fuel feederand is regulated such that a difference as a result of subtraction between the commanded and detected temperatures in the top of the furnacebecomes zero to perform a feedback control for the feeder