Name : [in Japanese]
Location : [in Japanese]
Date : October 20, 2022 - October 21, 2022
Pages 28-29
In pulverized coal-fired boilers, operational problems and heat transfer inhibition may occur due to ash deposition. It has been confirmed that iron components are concentrated in the initial ash as a cause of ash deposition. In this study, combustion experiments were conducted using a laboratory-scale combustion furnace (DTF) to investigate the effect of pyrite minerals in coal, which are involved in ash deposition and corrosion, on fly ash formation.
Six types of coal samples were used: four with pyrite mineral content adjusted by dry specific gravity separation of coal, and two with 0.5w% and 1.0w% pyrite minerals added to the coal to investigate the effect of pyrite excluded mineral particles. CCSEM analysis of fly ash and the relationship between PM production in coal and pyrite-excluded minerals are reported.
