Title:
SOLID FUEL BURNER
Document Type and Number:
WIPO Patent Application WO/2018/034286
Kind Code:
A1
Abstract:
This solid fuel burner is provided with: a fuel nozzle 2 through which a fluid mixture of a solid fuel and a carrier gas flows, the opening shape of the fuel nozzle 2 being flat; a secondary air nozzle 4 that is located on the outer peripheral side of the fuel nozzle 2, a guide sleeve 13 being provided to the outer periphery of the tip of the secondary air nozzle 4, and the opening shape of the secondary air nozzle 4 being flat; and a tertiary air nozzle 7 that is located on the outer peripheral side of the secondary air nozzle 4 and comprises a horizontal part 7a and a slanted part 7b, the opening shape of the tertiary air nozzle 7 being cylindrical. On the outlet side of the solid fuel burner, inside the tertiary air nozzle 7, a guide vane 14 for guiding tertiary air to the outer peripheral side is supported by a support member 15 on the inner wall of the tertiary air nozzle 7. Due to this support configuration, the portion extracted during maintenance of the burner ends at the secondary air nozzle 4, ease of maintenance is excellent, and the gap between the guide vane 14 and the tertiary air nozzle 7 can be reduced. Therefore, as pertains to a burner configured such that combustion gas, which jets out from the outer periphery of a fuel-containing fluid stream, spreads radially outward, it is possible to provide a solid fuel burner with which increases in Nox concentration are better prevented and ease of maintenance is exceptional.
Inventors:
KURAMASHI KOJI (JP)
KIKUCHI HITOSHI (JP)
MITO SHOHEI (JP)
KIKUCHI HITOSHI (JP)
MITO SHOHEI (JP)
Application Number:
PCT/JP2017/029379
Publication Date:
February 22, 2018
Filing Date:
August 15, 2017
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F23D1/00; F23C5/02
Domestic Patent References:
| WO2012042910A1 | 2012-04-05 | |||
| WO2014027611A1 | 2014-02-20 |
Foreign References:
| JP2014055759A | 2014-03-27 | |||
| JPH09264509A | 1997-10-07 | |||
| JP2006132798A | 2006-05-25 | |||
| JP2006162208A | 2006-06-22 | |||
| JPH08135920A | 1996-05-31 | |||
| JPH11281010A | 1999-10-15 |
Attorney, Agent or Firm:
KAMEI, Takeyuki (JP)
Download PDF: