Method of presulfiding a hydrotreating, hydrocracking or tail ga

Details Method of presulfiding a hydrotreating, hydrocracking or tail ga Method of presulfiding a hydrotreating, hydrocracking or tail ga

1990-03-13

1991-08-20

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

208108, 208216R, 502219, 502220, 502221, B01J 27051, B01J 27049, B01J 27047, K10G 4508

Patent

active

050414046

ABSTRACT:
An improved method of presulfiding a hydrotreating or hydrocracking catalyst which minimizes sulfur stripping upon start-up of a hydrotreating or hydrocracking reactor utilizing such a catalyst. The method comprises the steps of contacting a hydrotreating or hydrocracking catalyst with elemental sulfur at a temperature below the melting point of sulfur, thereby forming a sulfur-catalyst mixture, and heating the sulfur-catalyst mixture to a temperature above the melting point of sulfur. Preferably, the sulfur-catalyst mixture is first mixed with at least one member selected from the group consisting of high boiling oils and hydrocarbon solvents to form a prewet mixture prior to heating at a temperature above the melting point of sulfur. Tail gas treating catalysts are also presulfided by these methods.

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"Experience Reveals Best Presulfiding Techniques for HDSA or HDN Catalysts", Harman Vallie, Oil & Gas Journal, 12/20/82, pp. 69-74.

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