催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (1): 67-72.

• 研究论文 • 上一篇    下一篇

催化裂化过程中负氢离子转移反应和氢转移反应的不同特征

龚剑洪,龙军,许友好   

  1. 中国石油化工股份有限公司石油化工科学研究院, 北京 100083
  • 收稿日期:2007-01-25 出版日期:2007-01-25 发布日期:2010-08-28

Different Reaction Characteristics of Hydride Transfer and Hydrogen Transfer in Catalytic Cracking

GONG Jianhong*, LONG Jun, XU Youhao   

  1. Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
  • Received:2007-01-25 Online:2007-01-25 Published:2010-08-28

PDF

1287

被引次数

32

摘要： 基于重质油在酸性Y分子筛催化剂上的反应,区分了负氢离子转移反应和氢转移反应,认为负氢离子转移和氢转移是重质油催化反应过程中的两个不同过程. 确定了大庆减压蜡油在酸性Y分子筛催化剂上反应时,负氢离子转移反应主要发生在反应前期(转化率为5%～10%)至反应中后期(转化率为60%～70%)的转化深度区间,而氢转移反应主要发生在反应后期(转化率＞60%～70%). 负氢离子转移反应基本不产生焦炭,焦炭主要通过氢转移反应产生. Y分子筛上发生的主要是汽油烯烃和环烷烃之间的氢转移反应.

关键词: 蜡油, 催化裂化, 负氢离子转移, 氢转移

Abstract: Based on the Daqing vacuum gas oil’s reaction on an acid Y zeolite catalyst, hydride transfer and hydrogen transfer were distinguished as two different reaction stages during the catalytic cracking. Hydride transfer takes place at conversion intervals between 5%～10% and 60%～70%, while hydrogen transfer occurs at conversions above 60%～70%. Coke, independent of hydride transfer, is mainly produced by hydrogen transfer. The hydrogen transfer reaction on the Y zeolite catalyst mainly takes place between gasoline olefins and naphthenes.

Key words: vacuum gas oil, catalytic cracking, hydride transfer, hydrogen transfer