Authors: Hoang Trung Kien, Pham Van Hung

Published in: Journal of Mechanical Enterprises & Life.

Date published: 2018

Abstract: The bottom ash disposal system is an auxiliary equipment system of the coal-fired thermal power plant boiler. In circulating fluidized bed (CFB) coal-fired boilers, the bottom ash discharge equipment always operates under harsh conditions: it must transport the bottom combustion products, which include components that are "hard particles" with very high hardness and sharp edges; the inlet temperature reaches up to 950⁰C; therefore, severe mechanical wear occurs, along with chemical corrosion processes under high-temperature catalysis,... All these conditions cause the system’s components to be at constant risk of premature failure, affecting the output, quality of ash discharge, and failing to meet environmental criteria. The paper presents the results of research, design, and manufacturing of a bottom ash cooler for CFB coal-fired boilers with a capacity of 6 tons per hour, meeting market demand and replacing imported products.

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