Process for improving the stability of catalysts for the catalytic hydrotreatment of petroleum cuts
AssigneeElf France
InventorsJacques Bousquet, Claude Gueguen, Daniel Vautier
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Abstract
The invention relates to a process to improve the stability of a catalyst to be used for lowering the cloud or turbidity point and the filterability limit temperature of gas-oils. The catalyst is formed of a composite system constituting 5 to 90% of a hydrodesulfuration type catalyst A and 95 to 10% of a hydroconversion type catalyst B, these two catalysts being either mixed or superposed, in which case catalyst A forms the top of the catalytic bed.
Claims6
In a method for the catalytic hydrotreatment of petroleum cuts containing heavy n-paraffins, the improvement comprising conducting said catalytic hydrotreatment reaction in the presence of a catalyst composition comprising:
- (a) 5-90% of a catalyst containing a metal from each of Group VI and Group VIII of the Periodic Table on a non-acid or weak acid oxide support;
- and
- (b) 95-10% of a catalyst containing a metal from each of Group VI and Group VIII of the Periodic Table on a silica-alumina support having a silica content greater than 5% by weight.
Dependencies are inferred from the claim text.