Abstract:(FPC)company,the bag filter,activated carbon adsorption,lye scrubber,water scrubber,liquid caustic+ sodium hypochlorite scrubber were used to treat the exhaust gas.The total investment of the projectwas 2.7 million yuan,and the annual operation cost was 1.989 6 million yuan.The concentrations of sul⁃furic acid mist,hydrochloric acid mist,nitrogen oxides,formaldehyde,ammonia-containing exhaust gas,hydrogen cyanide,tin-containing exhaust gas,organic exhaust gas,and dust in the exhaust gas were 0~0.10 mg/m3,0.01~1.36 mg/m3,0~0.53 mg/m3,0.02~0.05 mg/m3,0.48~0.66 mg/m3,0.02~0.13mg/m3,0.75~2.35 mg/m3,0.846~2.505 mg/m3,and 1.47~2.56 mg/m3. Close-