The utility model relates to the technical field of reactor equipment, and provides an ultralow-temperature
moving bed deacidification and denitration integrated reactor which comprises a reactor and a reaction
bed in the reactor, a
smoke inlet
pipe is mounted through a limiting box above the reactor, and a pretreatment unit is arranged in the limiting box; the
fixed frame and the upper closing frame above form a combined structure, the inner side of the
fixed frame is provided with a circular through hole which is in
butt joint with the
smoke inlet
pipe, and the inner side of the
fixed frame, which is close to the upper end area, is provided with filter cloth which is used for intercepting
dust particles contained in
smoke so as to prevent the reaction
bed from being blocked. According to the utility model, pretreatment can be carried out before deacidification and denitration of
flue gas, particle impurities contained in the
flue gas are fully removed, a reaction
bed is effectively prevented from being blocked so as to ensure the
flue gas purification quality, in addition, the filtering mechanism can be cleaned in real time so as to maintain the
impurity interception effect during long-time use, and the service life of the
flue gas is prolonged. And finally, components in the pretreatment unit can be assembled, disassembled and replaced at any time, stable sealing is ensured during the period, air leakage is prevented, and the safety performance is guaranteed.