优化工艺条件降低汽油烯烃含量

Optimizing operation conditions for cracked gasoline olefin reduction

针对广州石化蜡油催化裂化装置汽油烯烃含量高的问题,对工艺条件进行了优化调整,包括降低反应温度、增大剂油比、提高催化剂活性、拓宽汽油馏程和提高稳定塔的稳定深度等.结果表明:控制反应温度为485 ℃,剂油体积比为5.5～7.0,催化剂活性约70%,汽油馏程干点为205 ℃,稳定塔塔顶温度为59 ℃、塔底温度为180 ℃时,可使该装置汽油烯烃体积分数由43.2%下降至35%左右.

Contraposing to the issue on high gasoline olefin in FCCU of wax oil in Guangzhou Petrochemical Co.Ltd,the operation conditions were optimized.The results showed that through controlling reacter temperature at 485 ℃,mass ratio of catalyst and oil 5.5～7.0,the activitly of catalyst 70%,the volumn fraction of gasoline olefin decreased from 43.2% to less than 35%.