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:
Feb. 20, 2001
Filed:
Jan. 28, 1999
Hirofumi Okazaki, Hitachi, JP;
Hironobu Kobayashi, Hitachi, JP;
Toshikazu Tsumura, Kure, JP;
Kenji Kiyama, Kure, JP;
Tadashi Jimbo, Kure, JP;
Kouji Kuramashi, Kure, JP;
Shigeki Morita, Kure, JP;
Shinichiro Nomura, Osaka, JP;
Miki Shimogori, Kure, JP;
Other;
Abstract
A combustion method utilizing a pulverized coal combustion burner which is provided with a pulverized coal nozzle for jetting a fluid mixture of pulverized coal and air and an air nozzle for jetting air. In the method, a combustion flame formed by the pulverized coal combustion burner forms a first zone of a gas phase air ratio of one or less at a radially central portion of the flame and a second zone of a gas phase air ratio of more than one outside of the first zone adjacent the coal nozzle, and a third zone of a gas phase air ratio of one or less at a downstream side from said first and second zones.