使用分馏并对重组分加氢处理除去硫 ,流出物用中间组分急冷处理 ,并加氢处理混合蒸气流 ,能有效除去硫 ,辛烷值的损失最小。降低流化催化裂化汽油硫含量的步骤 :①分馏成含 50 %～ 80 %流化催化裂化汽油的轻馏分 ,含 1 0 %～ 30 %流化催化裂化汽油的中间馏分及含5%～ 2 0 %流化 Using fractional distillation and hydrotreating heavy components to remove sulfur, the effluent is quenched with an intermediate component and hydrotreated with a mixed vapor stream to effectively remove sulfur with minimal octane loss. Reduce the fluid catalytic cracking gasoline sulfur content step: ① fractionated into a light fraction containing 50% ~ 80% fluid catalytic cracking gasoline, middle distillate containing 10% ~ 30% fluid catalytic cracking gasoline and containing 5% ~ 2 0% fluidized