Title:
GAS-FIRING BURNER
Document Type and Number:
Japanese Patent JP2015096780
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To put a gas-firing burner capable of reducing an emission amount of nitrogen oxide into practical use.SOLUTION: A gas-firing burner is provided with: a primary burner 3 for supplying only gaseous fuel for stabilized combustion occupying a small percentage of total gaseous fuel supplied to a combustion section B to the combustion section B; a secondary burner 4 which is provided on an outer periphery of the primary burner 3, performs lean pre-mixture of gaseous fuel for main combustion occupying the largest percentage of the total gaseous fuel and air and supplies fuel-air mixture subjected to the lean pre-mixture to the combustion section B; and a tertiary burner 7 which is provided on an outer periphery of the secondary burner 4 so as to face the combustion section B and supplies gaseous fuel for reduction combustion occupying a residual percentage of the total gaseous fuel to the combustion section B.
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Inventors:
ARAKAWA NORIAKI
HASHIGUCHI KAZUAKI
TAKASHIMA YOHEI
HASHIGUCHI KAZUAKI
TAKASHIMA YOHEI
Application Number:
JP2013236816A
Publication Date:
May 21, 2015
Filing Date:
November 15, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F23C99/00; F02C7/22; F02C7/228; F02C7/232; F23R3/14; F23R3/28; F23R3/34
Domestic Patent References:
| JPH05340273A | 1993-12-21 | |||
| JPH1151311A | 1999-02-26 | |||
| JP2006242399A | 2006-09-14 | |||
| JPH0665715U | 1994-09-16 | |||
| JPH0828872A | 1996-02-02 | |||
| JPS6033423A | 1985-02-20 | |||
| JP2013177989A | 2013-09-09 | |||
| JPS58158908U | 1983-10-22 |
Attorney, Agent or Firm:
Seishin ip patent business corporation