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Title:
COMBUSTION BURNER, BOILER, COMBUSTION METHOD OF FUEL GAS
Document Type and Number:
Japanese Patent JP2016156529
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a combustion burner which enhances internal flame holding to attain stable ignition.SOLUTION: A combustion burner includes: a fuel nozzle having a fuel gas injection port, which injects a fuel gas formed by mixing a carbon-containing solid fuel with primary air, and a fuel gas passage including an end part at which the fuel gas injection port is provided; a secondary air nozzle having a secondary air injection port, which is disposed around the fuel gas injection port and jets secondary air, and a secondary air passage including an end part at which the secondary air injection port is provided; a flame holding member which is disposed in the fuel gas passage at the fuel gas upstream side of the fuel gas injection port; and a heating member disposed at the upstream side of the flame holding member in the fuel gas passage. The heating member includes: a first portion installed in the fuel gas passage; and a second portion disposed in the secondary air passage and is heated by the secondary air.SELECTED DRAWING: Figure 2

Inventors:
TANAKA RYUICHIRO
OURA KOJI
Application Number:
JP2015033288A
Publication Date:
September 01, 2016
Filing Date:
February 23, 2015
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYS
International Classes:
F23C99/00; F23D1/00
Domestic Patent References:
JP2006052917A2006-02-23
JP2012215364A2012-11-08
Attorney, Agent or Firm:
Hiroaki Sakai
Jun Takamura