Title:
COMBUSTION BURNER AND BOILER PROVIDED WITH THE SAME
Document Type and Number:
Japanese Patent JP2018124012
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable reduction of the amount of NOx generation by promoting discharge of combustible volatile matter included in fuel, while suppressing release of an unburnt part of fuel to a furnace.SOLUTION: A combustion burner 100A comprises: a fuel nozzle 110; a secondary air nozzle 120; a secondary air flow channel 121 formed between the secondary air nozzle 120 and the fuel nozzle 110; a secondary air introduction flow channel 130 that introduces at least some of secondary air flowing through the secondary air flow channel 121 into a fuel gas flow channel 111; and a flame stabilizer 140 disposed within the fuel nozzle 110. Here, the relationship 2≤L/W≤5 is satisfied, where L is a gas-flow-direction distance along an axis X1 from an introduction position P1, in which the at least some of the secondary air is introduced from the secondary air introduction flow channel 130 into the fuel gas flow channel 111, to an installation position P4, in which the flame stabilizer 140 is installed, and W is the minimum width of the fuel gas flow channel 111 extending from the introduction position P1 to the installation position P4.SELECTED DRAWING: Figure 3
Inventors:
TOMINAGA SACHIHIRO
MATSUMOTO KEIGO
DOMOTO KAZUHIRO
TANAKA RYUICHIRO
ABE NAOFUMI
KASAI JUN
MATSUMOTO KEIGO
DOMOTO KAZUHIRO
TANAKA RYUICHIRO
ABE NAOFUMI
KASAI JUN
Application Number:
JP2017016146A
Publication Date:
August 09, 2018
Filing Date:
January 31, 2017
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS
International Classes:
F23D1/00; F23C99/00; F23L1/00
Domestic Patent References:
| JP2003279006A | 2003-10-02 | |||
| JP2015180848A | 2015-10-15 | |||
| JP2013194994A | 2013-09-30 | |||
| JP2000257855A | 2000-09-22 | |||
| JP2005273973A | 2005-10-06 | |||
| JP2016194379A | 2016-11-17 | |||
| JP2016156530A | 2016-09-01 | |||
| JP2014001908A | 2014-01-09 | |||
| JPS6057104A | 1985-04-02 | |||
| JPH03230003A | 1991-10-14 |
Foreign References:
| WO2015037589A1 | 2015-03-19 |
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata