费托蜡催化裂解的反应性能

发布时间：2018-03-13 06:01

本文选题：费托蜡　切入点：催化裂解　出处：《石油学报(石油加工)》2017年05期 　论文类型：期刊论文

【摘要】：在小型固定流化床装置上,使用MMC-2催化剂对费托蜡在不同活性催化剂和不同积炭量催化剂上的催化裂解反应性能进行了考察。结果表明,费托蜡易转化,MMC-2催化剂活性对其转化率影响较小,但对产物分布影响较大。随着催化剂活性从52%升高到83%,干气产率从4.12%升高到10.34%,焦炭产率从2.20%升高到10.50%,汽油产率从36.10%降低到22.99%;液化气产率变化不大,在56%左右,但液化气中的丙烯和丁烯质量分数明显降低。MMC-2催化剂活性越低,酸中心密度越低,越有利于生产低碳烯烃。费托蜡适宜在低活性催化剂上反应生产低碳烯烃。通过对催化剂进行焦炭修饰,同样能够降低催化剂上的酸量,提高产物烯烃选择性。费托蜡在MMC-2催化剂积炭质量分数为0.6%~0.8%之间反应时,更有利于生产低碳烯烃。
[Abstract]:In a small fixed fluidized bed reactor, the catalytic cracking performance of Fischer wax on different active catalysts and different carbon deposition catalysts was investigated by using MMC-2 catalyst. The activity of Fetor wax easily converted MMC-2 catalyst had little effect on its conversion. With the increase of catalyst activity from 52% to 833, the dry gas yield increased from 4.12% to 10.34, the coke yield increased from 2.20% to 10.50, the gasoline yield decreased from 36.10% to 22.99, and the LPG yield did not change from about 56% to 10.34, while the catalyst activity increased from 52% to 833%, the dry gas yield increased from 4.12% to 10.34, the coke yield increased from 2.20% to 10.50, and the gasoline yield decreased from 36.10% to 22.99. However, the lower the mass fraction of propene and butene in LPG is, the lower the activity of the catalyst is, and the lower the acid center density is. The more favorable the production of low carbon olefin, the more suitable for the reaction of Fischer wax on low active catalyst to produce low carbon olefin. By modifying the catalyst with coke, it can also reduce the amount of acid on the catalyst. When the carbon content of MMC-2 catalyst is between 0. 6% and 0. 8%, it is more favorable for the production of low carbon olefin.
【作者单位】：中国石化石油化工科学研究院;
【基金】：中国石油化工集团公司项目(113017)资助
【分类号】：TE624

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