SOLID FUEL BURNER, BOILER DEVICE, AND NOZZLE UNIT FOR SOLID FUEL BURNER

WIPO Patent Application WO/2020/230245

A1

Provided is a solid fuel burner that can reduce unburned fuel and CO while suppressing generation of NOx. A solid fuel burner (5) which is inserted into a burner throat (28) drilled into the wall (19) of a furnace (2) comprises: a solid fuel nozzle (10) that ejects a fluid mixture of solid fuel and primary air; a secondary air nozzle (11) that ejects secondary air; a tertiary air nozzle (12) that ejects tertiary air; a secondary air guide member (34) that is located on the outer periphery of the tip of the solid fuel nozzle and guides the flow of secondary air outward in the radial direction; and one or more tertiary air guide members (20) that are located at the tip of the tertiary air nozzle and guide the flow of tertiary air outward in the radial direction at a first angle (θ1) with respect to the central axis (C) of the solid fuel burner. The leading end position (X2) of the tertiary air guide member in the axial direction of the solid fuel burner is closer to the furnace than the leading end position (X1) of the secondary air guide member.

KIYAMA KENJI (JP)
OCHI KENICHI (JP)
MITO SHOHEI (JP)
KITAKAZE KOSUKE (JP)
MINE TOSHIHIKO (JP)

PCT/JP2019/018982

November 19, 2020

May 13, 2019

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MITSUBISHI HITACHI POWER SYS (JP)

F23D1/00

JP2007057228A	2007-03-08
JP2018028418A	2018-02-22
JP2003240227A	2003-08-27
JP2000356309A	2000-12-26
JPH11304116A	1999-11-05
JP2006189188A	2006-07-20

THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)

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