石油炼制与化工

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预硫化加氢催化剂石蜡钝化工艺研究

杨春亮 张权辉 董群   

  1. 中国石化镇海炼化分公司 中国石化镇海炼化分公司 大庆石油学院化学化工学院
  • 收稿日期:2009-04-10 修回日期:1900-01-01 出版日期:2009-11-12 发布日期:2009-11-12
  • 通讯作者: 杨春亮

STUDY ON THE PASSIVATION OF PRESULFIDED HYDROGENATION CATALYST WITH PARAFFIN WAX

Yang Chun-liang   

  • Received:2009-04-10 Revised:1900-01-01 Online:2009-11-12 Published:2009-11-12
  • Contact: Yang Chun-liang

摘要: 采用脱水、脱芳烃的固体石蜡对预硫化加氢催化剂进行钝化处理,考察了石蜡用量、钝化时间、钝化温度对加氢催化剂钝化效果的影响。以催化裂化柴油为原料,采用固定床连续微反装置对钝化前、后的催化剂进行活性评价,同时以ONU自热测试装置对钝化的催化剂自热最高温度进行评价,确定最佳钝化工艺条件。实验结果表明,采用石蜡对预硫化加氢催化剂进行钝化处理是可行的,最佳的钝化工艺条件为:石蜡与催化剂的质量比15%,钝化时间10~15min,钝化温度60℃。该工艺操作简单,可有效抑制催化剂的自热反应,并能保持催化剂的活性,易于活化。

关键词: 钝化, 加氢催化剂, 石蜡, 预硫化

Abstract: The passivation treatment of presulfided hydrogenation catalyst was conducted using a dehydrated and dearomatization paraffin wax as passivator and the effect of treating conditions on the maximum self-heating temperature and the activity of the catalyst was investigated. The activities of catalysts prior and post to passivation were evaluated by continues fixed-bed micro-reactor using FCC diesel fraction as feed and their maximum self-heating temperatures were determined on an ONU device. Test results show that it is feasible to passivate presulfided hydrogenation catalyst with paraffin wax, the self-heating behavior of the treated catalyst is improved significantly and the catalyst activity remains quite well. The optimal passivation conditions are under a wax/catalyst mass ratio of 0.15, a passivation temperature of 40℃ and a treating time of 10~15min, besides, the treatment is simple and convenient.

Key words: Passivation, Hydrogenation catalysts, Paraffin wax, presulfiding