Flue gas deacidification tower

The utility model discloses a flue gas deacidification tower which comprises a base, a deacidification tower main body is arranged on one side of the top end of the base, a gas inlet is formed in one side of the deacidification tower main body, a gas outlet is formed in the middle of the top end of the deacidification tower main body, and a collecting hopper connected with the inner wall of the deacidification tower main body is arranged in the deacidification tower main body. An opening and closing mechanism is arranged at the bottom end of the collecting hopper; a fan I is arranged below the other side of the deacidification tower main body; the activated carbon deacidification tower has the beneficial effects that when activated carbon is collected, a hollow sealing block of a conical structure can be driven to move upwards to close a collecting hopper by rotating a knob, smoke dust in a discharging hopper can be discharged into the deacidification tower main body again through a branch pipe and an air inl