石油炼制与化工 ›› 2015, Vol. 46 ›› Issue (5): 62-66.

• 催化剂 • 上一篇    下一篇

不同有机钼催化剂在重油加氢反应中的差异及其原因初探

张倩倩1,2,邓文安2,李传2,沐宝泉2   

  1. 1. 洛阳瑞泽石化工程有限公司
      2. 中国石油大学(华东)重质油国家重点实验室
  • 收稿日期:2014-11-17 修回日期:2014-12-31 出版日期:2015-05-12 发布日期:2015-04-21
  • 通讯作者: 邓文安 E-mail:dengwenan@upc.edu.cn
  • 基金资助:

    教育部自主创新科研计划新项目

BEHAVIORS OF ORGANIC Mo CATALYSTS IN HEAVY OIL HYDROTREATING AND ITS REASON ANALYSIS

  • Received:2014-11-17 Revised:2014-12-31 Online:2015-05-12 Published:2015-04-21

摘要: 在实验室合成了3种具有代表性有机钼催化剂,分别为不含硫有机钼(CAT-MoI)、含硫粉末状有机钼(CAT-MoII)和含硫油状有机钼(CAT-MoIII)。在相同反应条件下,在高压釜中进行渣油悬浮床加氢反应实验,3种有机钼抑焦性能由高到低的顺序为CAT-MoIII>CAT-MoII>CAT-MoI。以减压馏分油为硫化介质,将3种有机钼在375 ℃下硫化60 min,将分散在减压馏分油中的硫化物分别进行透射电子显微镜(TEM)、冷场扫描电镜(SEM)、X射线衍射(XRD)和马尔文动态光散射(DLS)表征。结果表明: CAT-MoIII生成硫化物的分散度最高、结晶度最低、粒径最小, CAT-MoI生成硫化物的结晶度最高,粒径最大。

Abstract: Three kinds of organic molybdenum catalysts: molybdenum catalyst without sulfur (CAT-MoI), powder molybdenum catalyst with sulfur (CAT-MoII), and oily molybdenum catalyst with sulfur (CAT-MoIII) were synthesized. The performance of these catalysts in residue hydrocracking was investigated in an autoclave at the initial H2 pressure of 7MPa,430 ℃. The results show that the inhibition of coke formation enhances in the order of CAT-MoI<CAT-MoII<CAT-MoIII. To explore the cause for the difference, CAT-MoI, CAT-MoII, CAT-MoIII were dispersed in VGO and sulfurized at the conditions of initial H2 pressure of 7 MPa, 375 ℃for 60 min, respectively. XRD、TEM、SEM and Melvin Dynamic Light Scattering(DLS)were used to characterize the metal sulfides separated from VGO. The characterization results show that the metal sulfides from CAT-MoIII display the highest dispersity, lowest crystallinity and smallest particle size. The CAT-MoI has the highest crystallinity and the largest particle size.