boiler parts

MBL coal-fired hot air furnace consists of MBL coal burner, hot gas purifying room, and air mixing room. Coal burner supplies the primary heat. Raw (soft) coal is fed into the coal hopper through the coal feeder. The coal is delivered by chain grate into the burning chamber of coal burner. With the help of combustion fan, hot semi-coal gas produced by burning coal erupts from fire outlet of coal burner and enters in hot gas purifying room, which is built of fire resistant materials; hot semi-coal gas begins secondary combustion in purifying room. The particles impact, aggregate and drop in the purifying room. Clean hot air from purifyingroom at about 1000°C then mixes into a certain amount of cool air, the mixed air at the suitable temperature flows into dryer(such as spray tower, rotary kiln, oven, drying house, flash dryer, fluidized bed etc.) todry raw material. Temperature of hot air can be adjustable according to the demand. Cinder is discharged from the other side of coal burner by chain conveyor.