RECIRCULATED EXHAUST GAS SUPPLY CONTROL METHOD FOR STOKER FURNACE, AND STOKER FURNACE

WIPO Patent Application WO/2014/132532

A1

Provided are a recirculated exhaust gas supply control method for a stoker furnace and a stoker furnace capable of greatly reducing NOx concentration in a furnace outlet without increasing CO concentration. Recirculated exhaust gas from a front side is supplied rearward from a front-side ceiling wall, and recirculated exhaust gas from a rear side is supplied forward from a rear wall or a rear-side ceiling wall. The temperature distribution in the combustion chamber is measured to determine where in a forward-backward direction the combustion position on a fire grate is positioned, relative to a reference range that has been set in advance. Cases are distinguished in terms of the combustion position being farther forward in comparison to the reference range, being farther rearward, or being within the reference range, and the distribution ratio between recirculated exhaust gas from the front side and recirculated exhaust gas from the rear side is varied depending on each case.

FURUBAYASHI MICHITAKA (JP)
ITOH HANAKO (JP)
SHIRAISHI YUJI (JP)
NAKATAYA NAOHIRO (JP)

PCT/JP2013/084004

September 04, 2014

December 19, 2013

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HITACHI SHIPBUILDING ENG CO (JP)

F23G5/50; F23G5/00; F23G5/14; F23G5/44

JPS6122115A	1986-01-30
JPS5944513A	1984-03-13
JP2011163652A	2011-08-25
JP2003166707A	2003-06-13
JP2002022124A	2002-01-23
JPH1137436A	1999-02-12
JPH10253031A	1998-09-25
JP2003161422A	2003-06-06

WATANABE, Akira et al. (JP)
Akira Watanabe (JP)

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