Hydrogen chloride synthetic furnace tail gas absorption system provided with explosion-proof device

The utility model discloses a hydrogen chloride synthetic furnace tail gas absorption system with an explosion-proof device, which comprises a primary falling film absorber, a secondary falling film absorber and a tail gas absorption tower, a waste gas discharge pipeline between the first-stage falling film absorber and the second-stage falling film absorber is connected with a nitrogen source through a nitrogen main pipeline, an electromagnetic regulating valve electrically connected with the PLC is mounted on the nitrogen main pipeline, and a first stop valve and a second stop valve are mounted on the nitrogen main pipeline on the left side and the right side of the electromagnetic regulating valve. One side of the nitrogen main pipeline is connected with a nitrogen branch pipeline in parallel. Through the valve group formed by the exhaust gas pipeline stop valve, the first stop valve, the electromagnetic regulating valve and the second stop valve and the PLC, nitrogen can be filledin time according to the