荆门分公司重油催化裂化装置通过调整工艺操作使汽油烯烃含量由 4 5 %～ 4 8%降至现在的 35 %以下。从而使催化裂化汽油烯烃含量基本上达到了国家要求的 35 %的标准。具体措施为 :(1)降低反应温度反应温度对烯烃影响较大 ,当反应温度达到 5 10℃以上时 ,汽油中烯烃含量上升较快 Jingmen Branch of heavy oil catalytic cracking unit by adjusting the process so that the gasoline olefin content from 45% ~ 48% down to the present 35%. So that the olefin content of FCC gasoline basically reached the national standard of 35%. Specific measures are as follows: (1) to reduce the reaction temperature The reaction temperature has a greater impact on the olefin, when the reaction temperature reaches 5 10 ℃ above, the olefin content in gasoline increased rapidly