流化催化裂化反应器的技术进展

Advances in reactors for fluid catalytic cracking

介绍并讨论了近期开发的流化催化裂化反应器,包括两段串联反应器、双提升管反应器、下行式反应器、多段进料反应器以及新型提升管反应器端口结构技术。以新型反应器为核心技术的各种催化裂化新工艺可以有效地提高催化裂化反应的转化率和选择性,减少非理想产品产率,也可以改善产品质量,生产环境友好的清洁燃料油品。此外新型提升管反应器端口结构还可以抑制设备结焦,延长流化催化裂化(FCC)装置的开工周期。

Recent reactors for fluid catalytic cracking (FCC) process are introduced, including two-staged reactors in series, dual-riser reactor, down-flow reactor, multiple-staged feeding reactor, and new structures of the inlet and outlet of the riser reactor. Various kinds of novel FCC processes based on the reactors can effectively enhance the conversion and selectivity of cracking reaction of hydrocarbons and minimize the yields of undesired products, or improve the quality of desired products so as to manufacture the environment-friendly clean fuel products. Moreover, new structures of the riser reactor ends can also suppress the coke deposit on the FCC unit so that the on-stream period of the unit can be prolonged.