In the production process, due to the influence of static electricity, the reactor is easy to produce block material, blocking the reactor discharge pipeline or outlet. The reactor is a double discharge line, so it is often necessary to disassemble and clean the fault parts in the production state. In the process of disassembly and cleaning, it is easy to cause fire, explosion and personal injury. Countermeasures should be taken is to strengthen the displacement of pipeline, strengthen the command of the scene, on-site personnel should strengthen the contact with the control room, the main control room in the process of displacement pressure discharging personnel should inform field personnel to leave even discharging area, prevent to material wounded, additional homework personnel should strictly labor insurance clothing, use explosion-proof tools, prevent all kinds of sparks, The material cleaned out on site should be removed in time.