Combustion device with low nitrogen oxide emission

The invention discloses a combustion device with low nitrogen oxide emission. The combustion device with the low nitrogen oxide emission comprises a furnace body and a smoke exhaust pipe connected with the furnace body; a feeding port is formed in the side wall of the furnace body; an air inlet pipe is arranged on the side wall of the furnace body; a reduction chamber with hollow interior is arranged outside the furnace body; the end, far away from the furnace body, of the smoke exhaust pipe communicates with the reduction chamber; a one-way valve is arranged on the smoke exhaust pipe; a gas inlet pipe used for filling ammonia gas into the reduction chamber is connected to the side wall of the reduction chamber; and a gas exhaust pipe is connected to the side, far away from the smoke exhaust pipe, of the reduction chamber. The combustion device with the low nitrogen oxide emission has the effect of reducing the possibility that the denitrification effect becomes poor and the combustion efficiency is reduced d