关键词: 关键词：烷基化，废酸再生，湿法，焚烧，关键控制, Key Words: Alkylation, Waste acid regeneration, Wet process, Burn, Critical control

Abstract: Abstract： Under the condition of incineration at 1000 ℃,89~90w% waste sulfuric acid was injected into incinerator to burn and pyrolyse for the mixed acidic gas of SO2, O2 and H2O. The SO2 gas was converted to SO3 through oxidation, and the total conversion rate of SO3 was 99.9%. The regeneration recycling device of 16000 t/a waste acid was built using wet process. When the waste acid device was fed 1.881t/h, new sulfuric acid products were produced at 1.727t/h, the waste acid recovery rate was 91.81w%. During regeneration reaction of waste acid, it ensured the stable operation of waste acid device through critical controls and interlocks of pressure and temperature of waste acid regenerative incinerator, reactor inlet temperature, condenser inlet temperature, thermal salt system temperature and steam system pressure.