METHOD FOR CONTROLLING NOX CONCENTRATION OF DISCHARGE GAS IN COMBUSTION EQUIPMENT USING DUST COAL

Title:

METHOD FOR CONTROLLING NOX CONCENTRATION OF DISCHARGE GAS IN COMBUSTION EQUIPMENT USING DUST COAL

Document Type and Number:

WIPO Patent Application WO/2012/114645

Kind Code:

A1

Abstract:

A method for controlling the NOx concentration of a discharge gas in combustion equipment in which dust coals are used as a fuel is provided, with which the NOx concentration of a discharge gas emitted from the combustion equipment in which dust coals are used as a fuel can be easily lowered to or below the regulation value according to the Air Pollution Control Law, etc. by performing control beforehand on the basis of the properties of the dust coals. In addition, the amount of a denitrifying agent or the like to be used for the control can be reduced. In this method, multiple kinds of dust coals are each examined beforehand for the rate of reaction of the char, and a relationship between the NOx concentration of the discharge gas and the reaction rates is determined in advance. The multiple kinds of dust coals are blended so that the rates of char reaction give a value which corresponds to an objective or lower NOx concentration, on the basis of the relationship, and the dust-coal blend is supplied as a fuel for the combustion equipment.

Inventors:

TAKAYAMA YOSHINORI (JP)
SHIMA HIROKAZU (JP)

Application Number:

PCT/JP2012/000207

Publication Date:

August 30, 2012

Filing Date:

January 16, 2012

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)
TAKAYAMA YOSHINORI (JP)
SHIMA HIROKAZU (JP)

International Classes:

C04B7/44; F23C1/00; F23C99/00; F23K1/00

Foreign References:

JP2010096431A	2010-04-30
JP2009109081A	2009-05-21
JP2007139266A	2007-06-07
JP2010500527A	2010-01-07
JPH09133321A	1997-05-20
JPH10194800A	1998-07-28
JPH10192896A	1998-07-28
JPH05196212A	1993-08-06
JPH07310903A	1995-11-28

Other References: