Title:
SOLID FUEL BURNER, BOILER DEVICE, NOZZLE UNIT OF SOLID FUEL BURNER, AND GUIDE VANE UNIT
Document Type and Number:
WIPO Patent Application WO/2020/230578
Kind Code:
A1
Abstract:
Provided is a solid fuel burner capable of reducing unburned portions, CO, and the like, while suppressing generation of NOx. A solid fuel burner (5) which is inserted into a burner throat (28) drilled in a wall part (19) of a furnace (2) is provided with: a solid fuel nozzle (10) which blows out a fluid mixture of a solid fuel and primary air; a secondary air nozzle (11) which blows out secondary air; a tertiary air nozzle (12) which blows out tertiary air; a secondary air guiding member (34) which is located at a tip peripheral part of the solid fuel nozzle and which guides a flow of the secondary air radially outward; and at least one tertiary air guiding member (20) which is located at a tip part of the tertiary air nozzle and which guides a flow of the tertiary air radially outward at a first angle (θ1) with respect to the center axis (C) of the solid fuel burner. A tip position (X2) of the tertiary air guiding member in the axial direction of the solid fuel burner is closer to the furnace than is a tip position (X1) of the secondary air guiding member.
Inventors:
KIYAMA KENJI (JP)
OCHI KENICHI (JP)
MITO SHOHEI (JP)
KITAKAZE KOSUKE (JP)
MINE TOSHIHIKO (JP)
OCHI KENICHI (JP)
MITO SHOHEI (JP)
KITAKAZE KOSUKE (JP)
MINE TOSHIHIKO (JP)
Application Number:
PCT/JP2020/017527
Publication Date:
November 19, 2020
Filing Date:
April 23, 2020
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
F23D1/00
Domestic Patent References:
| WO2014027609A1 | 2014-02-20 | |||
| WO2019131335A1 | 2019-07-04 |
Foreign References:
| JP2018028418A | 2018-02-22 | |||
| JP2007057228A | 2007-03-08 | |||
| JPH1144411A | 1999-02-16 | |||
| JP2020030037A | 2020-02-27 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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