生产清洁汽油组分的催化裂化新工艺MIP

从反应机理出发，提出催化裂化反应两个反应区的概念并得到小型试验验证，据此设计了新的反应器，提出了相应的工艺措施，并在此基础上，进行了中型试验。中型试验结果表明：对于管输混合油，在保持与现有的催化裂化产物分布相同的情况下，该工艺所生产的汽油中的烯烃含量下降12．4个百分点，异构烷烃和芳烃含量分别增加约6个百分点，汽油的RON不变而MON提高1．3个单位，汽油ω（硫）下降15％，诱导期大幅增加。

A MODIFIED FCC PROCESS MIP FOR MAXIMIZING ISO-PARAFFINS IN CRACKED NAPHTHA

A concept of two different reaction zones was proposed based on the FCC reaction mechanism and verified by the experimental results of a fixed fluidized bed reactor. The concept was used to design a novel reactor with corresponded operation measures. Further experiments were conducted on the newly designed pilot plant riser reactor. In comparison with the conventional FCC at similar conditions, the pilot plant results showed that the olefin content in the cracked naphtha dropped by 12% and both of iso paraffin and aromatics increased by about 6v%, and its MON increased by 1.3 unit with RON unchanged. The cracked naphtha had a longer induction period and its sulfur content decreased by 15%.