关键词: HCP反应模式, 催化裂解, 产品分布, 低碳烷烃产率, 丙烯效率指数, 丙烯氢利用效率指数, 热裂化指数, 氢转移指数

Abstract:

On the multi-functional fluidized catalytic pilot plant, the experimental comparison was carried out according to different reaction modes, and the evaluation indexes PE and Phe of catalytic cracking propylene production efficiency were put forward. The influence of reaction modes was analyzed from the aspects of alkanes, thermal cracking, hydrogen transfer, propylene production efficiency indexes, etc. The results show that compared with the traditional riser + fluidized bed reaction mode, the HCP(high efficiency catalytic cracking for more propylene) reaction mode with “conveyor bed and circulating fluidized bed in series and staged control” can significantly reduce the yield of dry gas and coke, reduce the yield of alkanes, and improve the efficiency of propylene production. HCP reaction mode can effectively inhibit thermal cracking reaction, hydrogen transfer reaction and single molecule cracking reaction.

Key words: HCP reaction mode, catalytic cracking, product distribution, yield of light alkane, propylene production efficiency index, hydrogen utilization efficiency index of propylene, thermal cracking index, hydrogen transfer index