COMBUSTION BURNER AND BOILER WITH SAME

WIPO Patent Application WO/2018/150701

A1

Provided is a combustion burner comprising: a fuel nozzle (110) forming a fuel gas flow passage (111) for supplying a fuel gas to a furnace; secondary air nozzles (120) forming secondary air flow passages (121) for supplying secondary air to the furnace from the outside of the fuel nozzle (110); and a pair of secondary air supply ports arranged above and below the secondary air nozzles (120) and supplying secondary air to the furnace (11). The fuel gas flow passage (111) and the secondary air flow passages (121) are flow passages having a rectangular shape in a cross-section taken perpendicular to an axis. The sum of the flow passage widths of the openings, open to the furnace, of secondary air flow passages (121) located to the left and right of the fuel gas flow passage (111) is greater than the sum of the flow passage widths of the openings, open to the furnace, of secondary air flow passages (121) located above and below the fuel gas flow passage (111).

TOMINAGA YUKIHIRO (JP)
MATSUMOTO KEIGO (JP)
DOMOTO KAZUHIRO (JP)
TANAKA RYUICHIRO (JP)
SAEKI TOMONORI (JP)
ABE NAOFUMI (JP)
KASAI JUN (JP)
IMADA JUNJI (JP)

PCT/JP2017/044416

August 23, 2018

December 11, 2017

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MITSUBISHI HITACHI POWER SYS (JP)

F23D1/00; F23C5/08

WO2016158079A1	2016-10-06
WO2008038426A1	2008-04-03
WO2011074281A1	2011-06-23

JPH08226615A	1996-09-03
US1566177A	1925-12-15
JP2015102298A	2015-06-04
JP2013174370A	2013-09-05
JP2009204256A	2009-09-10
US5545031A	1996-08-13

FUJITA, Takaharu (JP)

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