Patent ID: 11898751
Assignee: IHI INSPECTION AND INSTRUMENTATION CO., LTD.
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F

Claim 6:
7. A device for preventing ash adhesion in a coal-fired boiler comprising
a coal-ash generator for ashing coal into coal ash,
a sintered-ash generator for heating the coal ash generated in said coal-ash generator at a plurality of temperatures within a combustion temperature range of the coal-fired boiler to generate sintered ash at each of the heating temperatures,
a ratra tester for rotatively separating each sintered ash generated in said sintered-ash generator,
a sticking-degree calculator for calculating a sticking degree from weight ratio of each sintered ash after and before the rotary separation thereof by said ratra tester,
a correlation determiner for burning each coal having a corresponding sticking degree calculated in said sticking-degree calculator in the coal-fired boiler to measure an exhaust gas temperature to thereby determine a correlation between sticking degrees and exhaust gas temperatures and
a coal selector for selecting coal as fuel with a sticking degree as fuel so as to provide an exhaust gas temperature not higher than a set value on the basis of the correlation between the sticking degrees and the exhaust gas temperatures obtained in said correlation determiner.