The utility model relates to the technical field of
flue gas treatment, and discloses a
flue gas reactor which comprises a reaction bin, a
flue and a flow equalizing
assembly. The interior of the reaction bin is hollow to form a reaction cavity, and the reaction cavity is provided with a filter unit for performing denitration, dust removal and the like on
flue gas entering the reaction cavity; the side face of the reaction bin is provided with a circulation seam, and the width of the circulation seam is the same as that of the cross section of the reaction cavity, so that
smoke flowing through the circulation seam can be fully distributed in the reaction cavity, a dead angle area in which the
smoke cannot reach or cannot smoothly flow out is prevented from existing in the reaction cavity, and the
smoke can be in contact with and act on all the filter units in the reaction cavity; the
utilization rate of the filtering unit is improved. The two ends of the flow equalizing
assembly are communicated with the flue and the circulation seam respectively,
flue gas in the flue is guided into the circulation seam, it is guaranteed that the
flue gas can be evenly and fully distributed in the reaction cavity and makes even contact with and acts on all the filtering units, the
utilization rate of the filtering units is increased, and then the flue gas treatment efficiency is improved.