Title:
BURNER, AND COMBUSTION EQUIPMENT AND BOILER COMPRISING BURNER
Document Type and Number:
WIPO Patent Application WO/2008/038426
Kind Code:
A1
Abstract:
This invention provides a solid fuel burner, which, while rendering the capacity
larger than that in the prior art, can suppress an increase in an unignited region
and thus can realize the prevention of an increase in NOx density in a combustion
gas and the prevention of a lowering in combustion efficiency, and a combustion
equipment and boiler comprising the burner. The burner comprises a fuel-containing
fluid supply nozzle (12) which supplies a fuel-containing fluid, from a connection
part in a fluid transfer flow passage (10) for transferring a fuel-containing
fluid comprising a fuel and a medium for the transfer of the fuel, toward an outlet
part provided on the wall of a furnace (4). The fuel-containing fluid supply
nozzle (12) in its cross section perpendicular to the direction of flow of the
fluid is in a rectangular, elliptical, or approximately elliptical form having
major and minor axis parts from a connecting part (10a) in the fluid transfer flow
passage (10) toward the outlet part provided on the wall surface of the furnace
(4). Further, the area of a cross section perpendicular to the direction of flow
of the fluid is gradually increased from the connecting part in the fluid transfer
flow passage (10) toward the outlet part. One or more air supply nozzles (15)
for supplying combustion air are provided on the peripheral part of the nozzle
(12).
Inventors:
KIYAMA KENJI (JP)
BABA AKIRA (JP)
YANO TAKANORI (JP)
OKADA OSAMU (JP)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOUJI (JP)
BABA AKIRA (JP)
YANO TAKANORI (JP)
OKADA OSAMU (JP)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOUJI (JP)
Application Number:
PCT/JP2007/056311
Publication Date:
April 03, 2008
Filing Date:
March 27, 2007
Export Citation:
Assignee:
BABCOCK HITACHI KK (JP)
KIYAMA KENJI (JP)
BABA AKIRA (JP)
YANO TAKANORI (JP)
OKADA OSAMU (JP)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOUJI (JP)
KIYAMA KENJI (JP)
BABA AKIRA (JP)
YANO TAKANORI (JP)
OKADA OSAMU (JP)
OKAZAKI HIROFUMI (JP)
KURAMASHI KOUJI (JP)
International Classes:
F23D1/00; F23C99/00
Foreign References:
| JPH08200616A | 1996-08-06 | |||
| JPH11287433A | 1999-10-19 | |||
| JP2000314508A | 2000-11-14 | |||
| JP2000130710A | 2000-05-12 | |||
| JP2000234704A | 2000-08-29 | |||
| JPS3911303B1 | ||||
| JPS59500981A | 1984-05-31 | |||
| JPH08226615A | 1996-09-03 | |||
| JPH11281009A | 1999-10-15 |
Other References:
See also references of EP 2068077A4
Attorney, Agent or Firm:
MATSUNAGA, Takayoshi et al. (15-2 Nihonbashi 3-chome,Chuo-k, Tokyo 27, JP)
Download PDF: