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. 09, 2013
Filed:
Oct. 19, 2009
Yoshiharu Hayashi, Hitachinaka, JP;
Akihiro Yamada, Tokai, JP;
Tsuyoshi Shibata, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An oxyfuel boileris equipped with an oxygen separation apparatusto produce oxygen by separating oxygen from the air, a recirculation fanto supply a portion of combustion flue gas branched from the combustion flue gas discharged from the boiler to the oxyfuel boiler, a temperature sensorto detect gas temperature at a boiler outletin the oxyfuel boiler, and a control apparatusto calculate gas temperature at a furnace outletin the boiler from the gas temperature at the boiler outletdetected by the temperature sensorand control the operating condition of the recirculation fanso that the calculated gas temperature at the furnace outletbecomes a desired preset gas temperature.