Charcoal kiln tail gas treatment device

The invention discloses a charcoal kiln tail gas treatment device. The charcoal kiln tail gas treatment device comprises a waste gas treating column, wherein the upper end and the lower end of the waste gas treating column are respectively provided with a waste gas outlet and a waste gas inlet; the waste gas inlet is communicated with a main flue gas pipeline of a charcoal kiln; the main flue gas pipeline is internally provided with a condenser; the condenser forms a circulating loop together with a cooling water tank, and is a spiral-pipe-shaped heat exchanger extending into the main flue gas pipeline; one end of the spiral-pipe-shaped heat exchanger is communicated with the cooling water tank by a cooling water circulation pump, and the other end of the spiral-pipe-shaped heat exchanger is communicated with the cooling water tank by a water pipe. The charcoal kiln tail gas treatment device provided by the invention can comprehensively treat various pollutants in waste gas, and can stably run for a long time.