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US 4,975,399 AGranted
Regeneration of hydrotreating catalyst
AssigneePhillips Petroleum Company
InventorLloyd E. Gardner
Life of this patent
Estimating the term…
Abstract
A spent hydrotreating catalyst composition is regenerated by a two-step heating process under such conditions as to substantially remove all carbonaceous deposits therefrom and to increase the average pore diameter of the catalyst composition. The thus-prepared regenerated catalyst composition is employed in a process for hydrotreating metal-containing oils.
Claims30
A process for regenerating a spent hydrotreating catalyst composition comprising the steps of
- (a) heating at a temperature in the range of from about 700.degree. to about 1000.degree. F. a substantially dry spent hydrotreating catalyst 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, under such heating conditions as to substantially remove said solid carbonaceous deposits, and
- (b) heating the material obtained in step (a) at a temperature in the range of from about 1100.degree. to about 1700.degree. F., under such conditions as to increase the average pore diameter of said material obtained in step (a) and to provide a regenerated hydrotreating catalyst composition.
A process for regenerating a spent hydrotreating catalyst composition comprising the steps of
- (a) heating at a temperature in the range of from about 700.degree. to about 1000.degree. F. a substantially dry spent hydrotreating catalyst composition comprising (i) alumina as 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, under such heating conditions as to substantially remove said solid carbonaceous deposits, and
- (b) heating the material obtained in step (a) at a temperature in the range of from about 1100.degree. F. to about 1700.degree. F., under such conditions as to increase the average pore diameter of said material obtained in step (a) and to provide a regenerated hydrotreating catalyst composition.
Dependencies are inferred from the claim text.