这种使烃转化为轻馏分油的流化床式催化裂化装置包括一个反应段或滴管，再生催化剂从至少一个再生段被引入到反应器顶部的注入区，催化剂通过一节流阀，然后与进料接触，催化剂与进料的混合物流向反应器的底部，至少大部分进料在注入区中被雾化，进料裂化得到轻馏分油，轻馏分 The fluidized bed catalytic cracking unit for converting hydrocarbons to light distillates comprises a reaction section or pipette through which regenerated catalyst is introduced from at least one regeneration section to a top of the reactor and the catalyst passes through a throttle and then In contact with the feed, a mixture of catalyst and feed flows to the bottom of the reactor, at least a majority of the feed is atomized in the injection zone, the feed is cracked to give a light distillate, a light fraction