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:
May. 10, 2005
Filed:
Nov. 13, 2002
Hirofumi Okazaki, Hitachinaka, JP;
Masayuki Taniguchi, Hitachinaka, JP;
Toshikazu Tsumura, Kure, JP;
Yoshitaka Takahashi, Hatsukaichi, JP;
Kouji Kuramashi, Kure, JP;
Hirofumi Okazaki, Hitachinaka, JP;
Masayuki Taniguchi, Hitachinaka, JP;
Toshikazu Tsumura, Kure, JP;
Yoshitaka Takahashi, Hatsukaichi, JP;
Kouji Kuramashi, Kure, JP;
Hitachi, Ltd., Tokyo, JP;
Babcock- Hitachi K.K., Tokyo, JP;
Abstract
A solid fuel burner and method uses a low oxygen concentration gas as a transporting gas for a low grade solid fuel such as brown coal or the like, provides for accelerating ignition of the fuel and for preventing slugging caused by combustion ash. Mixing of fuel and air inside a fuel nozzleis accelerated by an additional air nozzleand a separatorfor separating a flow passage, arranged in the fuel nozzle, and an exit of the additional air nozzleis set at a position that overlaps with the separator. Additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle. The amount of air from the additional air nozzleis varied corresponding to a combustion load, in order to assure stable burning of the fuel, and, to suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.