渣油悬浮床加氢工艺Ni液溶胶催化剂

以水溶性Ni盐溶液为前体，制备了硫化态Ni催化剂的液溶胶体系。对Ni胶体催化剂和水溶性催化剂在原料油中的分散状况进行了观察分析，并对加氢裂化反应后两种催化剂的存在状态进行了SEM、XPS和激光粒度表征。结果表明，硫化态Ni液溶胶催化剂比水溶性Ni催化剂在原料油中分散颗粒度小，比表面积大，分散均匀。Ni胶体催化剂和水溶性Ni催化剂存在下渣油加氢裂化反应后，催化剂中Ni元素主要以Ni²⁺的形式存在，S主要以S²⁺和S⁶⁺两种形式存在，胶体催化剂在反应后无明显团聚现象。两种催化剂存在下渣油加氢裂化反应生焦数据表明， Ni胶体催化剂比水溶性Ni催化剂具有更高的抑制生焦活性。

Ni COLLOIDAL SOL CATALYST FOR SLURRY PHASE HYDROCRACKING OF RESIDUE

The Ni colloidal sol catalyst and water-soluble Ni catalyst were synthesized, which were also symbolized by use of microscope, SEM, TEM, XPS and LS granularity analyzing apparatus after being used in the slurry bed hydrocracking of residua.It was indicated that the average particle size of the Ni colloidal sol catalyst was smaller but the surface area was bigger than those of water-soluble Ni catalyst.After catalytic hydrocracking of residue the element Ni in the two catalysts existed as Ni~(2+) and the element S existed as S~(2+) and S~(6+) , and there was no particle agglomeration phenomenon in Ni colloidal sol catalyst.Compared with water-soluble Ni catalyst, the Ni colloidal sol catalyst could restrain coke forming more effectively.