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:
Aug. 13, 2013
Filed:
Jan. 10, 2007
Yuki Kamikawa, Hitachinaka, JP;
Masayuki Taniguchi, Hitachinaka, JP;
Hisayuki Orita, Hitachinaka, JP;
Hironobu Kobayashi, Hitachi, JP;
Akira Baba, Kure, JP;
Toshihiko Mine, Kure, JP;
Shinichirou Nomura, Kure, JP;
Noriyuki Ooyatsu, Kure, JP;
Satoshi Tadakuma, Kure, JP;
Hidehisa Yoshizako, Kure, JP;
Hiroaki Kanemoto, Kure, JP;
Kouji Kuramashi, Kure, JP;
Akihito Orii, Hitachi, JP;
Shinji Tsuda, Hitachi, JP;
Hirofumi Okazaki, Hiroshima, JP;
Takanori Yano, Kumano, JP;
Katsumi Shimohira, Kure, JP;
Yuki Kamikawa, Hitachinaka, JP;
Masayuki Taniguchi, Hitachinaka, JP;
Hisayuki Orita, Hitachinaka, JP;
Hironobu Kobayashi, Hitachi, JP;
Akira Baba, Kure, JP;
Toshihiko Mine, Kure, JP;
Shinichirou Nomura, Kure, JP;
Noriyuki Ooyatsu, Kure, JP;
Satoshi Tadakuma, Kure, JP;
Hidehisa Yoshizako, Kure, JP;
Hiroaki Kanemoto, Kure, JP;
Kouji Kuramashi, Kure, JP;
Akihito Orii, Hitachi, JP;
Shinji Tsuda, Hitachi, JP;
Hirofumi Okazaki, Hiroshima, JP;
Takanori Yano, Kumano, JP;
Katsumi Shimohira, Kure, JP;
Babcock-Hitachi K.K., Tokyo, JP;
Abstract
A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. The main after air ports are structured so as to jet air having a large momentum for enabling arrival at the central part of the furnace, and the sub-after air ports are structured so as to jet air having a small momentum to the neighborhood of the wall face of the furnace, and a sectional center of each of the sub-after air ports is within a range from 1 to 5 times of a caliber of the main after air ports from a sectional center of each of the main after air ports.