The invention relates to the field of
biomass combustors, in particular to a
biomass fuel
combustor which comprises a base, a shell, a
combustion furnace, a hopper, a feeding
auger and an
air blower, a feeding
pipe is arranged between the feeding
auger and the
combustion furnace, a ventilation
pipe is arranged at the
tail end of the
air blower and the
tail end of the feeding
pipe, a
flame nozzle is arranged on one side of the
combustion furnace, and a grate is arranged in the combustion furnace. A driving
assembly is arranged at the lower end of the combustion furnace, an ash baffle is connected to the inner wall of the combustion furnace, an ash outlet is formed in one side of the combustion furnace, an ash discharging
auger and an ash storage box are arranged in the shell, an induced draft fan is arranged in the shell, and an exhaust port is formed in the side wall of the feeding auger; and a filter screen is arranged at the exhaust port. According to the boiler ash
drying device, automatic discharging of the boiler ash can be achieved, fuel can be dried through
waste heat of the boiler ash, water in the fuel is reduced, and the situation that the
water content in the fuel is too large, and
slag and
tar are attached during combustion is avoided.