초록 ▼

An active hydrotreating catalyst composition is prepared by a process comprising the steps of (a) grinding a spent hydrotreating catalyst containing carbonaceous deposits, (b) mixing the ground spent catalyst with an alumina-containing material (preferably alumina), (c) shaping (preferably extruding

An active hydrotreating catalyst composition is prepared by a process comprising the steps of (a) grinding a spent hydrotreating catalyst containing carbonaceous deposits, (b) mixing the ground spent catalyst with an alumina-containing material (preferably alumina), (c) shaping (preferably extruding) the mixture of ground spent catalyst and alumina-containing material and (d) heating the shaped mixture so as to burn off carbonaceous deposits on the ground spent catalyst component. The thus-prepared active hydrotreating catalyst is used in a process for hydrotreating hydrocarbon containing feed streams (oils) which contain metal impurities.

대표청구항 ▼

A process for preparing an active hydrotreating catalyst composition from a spent hydrotreating catalyst composition comprising the steps of: (a) grinding a substantially dry spent hydrotreating composition comprising (i) an alumina-containing support material, (ii) at least one compound of at least

A process for preparing an active hydrotreating catalyst composition from a spent hydrotreating catalyst composition comprising the steps of: (a) grinding a substantially dry spent hydrotreating composition comprising (i) an alumina-containing support material, (ii) at least one compound of at least one metal selected from the group consisting of molybdenum, tungsten, nickel and cobalt, and (iii) solid carbonaceous deposits; (b) mixing the ground spent hydrotreating catalyst composition obtained in step (a) with alumina; (c) shaping the mixture obtained in step (b) into compacted particles comprising said ground spent hydrotreating catalyst composition and said alumina; and (d) heating the compacted particles obtained in step (c) in a free oxygen containing gas to a temperature in the range of from about 700°to about 1000°F., under such conditions as to substantially convert said solid carbonaceous deposits to carbon oxides, and to obtain an active hydrotreating catalyst composition.