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从低沸点反应产品中分馏得到的粗汽油馏分与一种催化剂在第二反应阶段接触 ,所得包括挥发性组分的气体产品和催化剂颗粒在第二反应阶段的汽提段汽提。催化剂再生后循环到反应段。一种原料在大孔沸石催化裂化催化剂的存在下 ,在流化催化裂化装置的第一反应阶段反应 ,生成低沸点
The crude gasoline fraction fractionated from the lower boiling point reaction product is contacted with a catalyst in a second reaction stage and the resulting gaseous product comprising the volatile components and the catalyst particles are stripped in the stripping section of the second reaction stage. The catalyst is recycled to the reaction zone after regeneration. A feedstock is reacted in the first reaction stage of a fluid catalytic cracking unit in the presence of a large pore zeolite catalytic cracking catalyst to produce a low boiling point