Abstract: During the operation of Unit 1 of Shaanxi Coal Power Xinyang Co., Ltd., due to the frequent failure of silicone in the anti-fuel respirator, the anti-fuel moisture exceeds the standard for a long time, which in turn causes abnormal anti-fuel acid value, and there are risks such as corrosion of anti-fuel system servo components, anti-fuel pump corrosion, and the failure to maintain the working pressure of the anti-fuel system, which seriously affects the safety and stability of unit operation, and at the same time greatly accelerates the deterioration speed of anti-fuel and shortens the service life of anti-fuel. By optimizing the anti-fuel respirator, it is transformed into a new type of visual respirator with strong adsorption capacity, which solves the problem that the silicone in the existing respirator blocks external moisture and leads to poor adsorption capacity, which in turn affects the service life of the respirator and causes abnormal fuel resistance index, avoids the frequent replacement of silicone inside the respirator, reduces the equipment maintenance workload, prolongs the service life of the anti-fuel fuel, and improves the safety and stability of the anti-fuel system。