Catalytic reactor for tail gas treatment in nitrate production

The utility model discloses a nitrate production tail gas treatment catalytic reactor, which comprises a catalytic reaction tank and a lower reaction chamber, the lower reaction chamber is arranged in the catalytic reaction tank, an upper reaction chamber is arranged in the catalytic reaction tank above the lower reaction chamber, an upper catalytic reaction layer is arranged in the upper reaction chamber, and a lower catalytic reaction layer is arranged in the lower reaction chamber. A lower catalytic reaction layer is mounted in the lower reaction chamber, and a lower connecting pipe is mounted at the top end of the lower reaction chamber. According to the utility model, the nitrate production tail gas treatment catalytic reactor can flexibly and rotatably convey gas for reaction, reaction catalysts can be conveniently replaced without shutdown, the operation continuity of the nitrate production tail gas treatment catalytic reactor is improved, the shutdown maintenance time of the tail gas treatment catalyt