METHOD AND DEVICE FOR PREDICTING ASH ADHESION IN COAL-FIRED BOILER, METHOD AND DEVICE FOR PREVENTING ASH ADHESION IN COAL-FIRED BOILER, AND METHOD AND DEVICE FOR OPERATING COAL-FIRED BOILER

Title:

METHOD AND DEVICE FOR PREDICTING ASH ADHESION IN COAL-FIRED BOILER, METHOD AND DEVICE FOR PREVENTING ASH ADHESION IN COAL-FIRED BOILER, AND METHOD AND DEVICE FOR OPERATING COAL-FIRED BOILER

Document Type and Number:

WIPO Patent Application WO/2020/050050

Kind Code:

A1

Abstract:

The present invention carries out: a coal ash generation step for generating coal ash; a sintered ash generation step for heating the coal ash at each of a plurality of temperatures in a sintering temperature range of a coal-fired boiler, thereby generating sintered ash at each temperature; an agglutination measurement step for rotating and separating each batch of sintered ash by means of a rattler tester, and measuring the degree of agglutination from the ratio of the weight of the sintered ash before and after rotation and separation; a correlation calculation step for burning coal which will produce the measured degree of agglutination in the coal-fired boiler, measuring the exhaust gas temperature, and obtaining a correlation between the degree of agglutination and the exhaust gas temperature; an exhaust gas temperature prediction step for predicting the exhaust gas temperature from the degree of agglutination of the coal used as a fuel, on the basis of the correlation between the degree of agglutination and the exhaust gas temperature; and an adhesion prediction step for predicting adhesion of ash in the coal-fired boiler, on the basis of the predicted exhaust gas temperature.

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Inventors:

KAWABE HIROTAKA (JP)
CHIE KENJIRO (JP)
SHIGETA JUNICHI (JP)

Application Number:

PCT/JP2019/032868

Publication Date:

March 12, 2020

Filing Date:

August 22, 2019

Export Citation:

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Assignee:

IHI CORP (JP)
IHI INSPECTION AND INSTR CO LTD (JP)

International Classes:

F22B37/38; F23K1/00; F23N5/00; G01N5/00; G01N33/22

Foreign References:

JP2004361368A	2004-12-24
JP2012013252A	2012-01-19
JP2012013253A	2012-01-19
JP2016205681A	2016-12-08
JP2011080727A	2011-04-21