Two-section type active coke/charcoal desulfurization and denitration integrated tower and desulfurization and denitration system

The invention discloses a two-section type active coke/charcoal desulfurization and denitration integrated tower and a desulfurization and denitration system and mainly solves the problem that a desulfurization and denitration device needs to be stopped during the replacement of active coke/charcoal in the prior art. The integrated tower sequentially comprises a charging buffer bin, a first reaction bin, a second reaction bin and a discharging buffer bin from top to bottom, wherein a material delivery valve is arranged between the first reaction bin and the second reaction bin; a tower body further comprises a raw flue gas charging box, a pure flue gas discharging box and a united gas box; the raw flue gas charging box and the pure flue gas discharging box are connected to the side wall of the same side of the tower body; the united gas box is connected to the side wall of the other side of the tower body; a first ventilated material baffle and a third ventilated material baffle are positioned in the pure flue gas discharging box and the raw flue gas charging box respectively; a second ventilated material baffle and the third ventilated material baffle are positioned in the united gas box respectively. Under the action of gravity, the active coke/charcoal slowly moves from top to bottom, the aims of continuous charging and discharging are achieved, the desulfurization and denitration operation can be continuously carried out, the active coke/charcoal is replaced without shutdown, a standby tower is not needed, and the investment is reduced.