Mineral oils: processes and products – Refining – Metal contaminant removal
Patent
1988-05-13
1991-09-10
Myers, Helane E.
Mineral oils: processes and products
Refining
Metal contaminant removal
208216PP, 208217, C10G 1700, C10G 4500
Patent
active
050471422
ABSTRACT:
A catalyst composition useful in the hydroprocessing of a sulfur- and metal-containing hydrocarbon feedstock comprises 1.0-5.0 weight percent of an oxide of nickel or cobalt and 10.0-25.0 weight percent of an oxide of molybdenum, all supported on a porous alumina support in such a manner that the molybdenum gradient of the catalyst has a value of less than 6.0 and 15-30% of the nickel or cobalt contained in the catalyst is in an acid extractable form. The catalyst is further characterized by having a total surface area of 150-210 m.sup.2 /g, a total more volume of 0.50-0.75 cc/g, and a pore size distribution such that pores having diameters of less than 100A constitute less than 25.0%, pores having diameters of 100-160A constitute 70.0-85.0% and pores having diameters of greater than 250A constitutes 1.0-15.0% of the total pore volume of the catalyst. A method for the hydroprocessing of a sulfur- and metal-containing hydrocarbon feedstock comprises contacting the feedstock with the abovedescribed catalyst and hydrogen in a maner such that the catalyst is maintained at isothermal conditions and is exposed to a uniform quality of feed. The method is particularly effective in achieving desired levels of hydrodesulfurization in vacuum residual feedstocks.
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Bartley Burton H.
Dai Pei-Shing E.
Neff Laurence D.
Sherwood, Jr. David E.
Kulason Robert A.
Myers Helane E.
O'Loughlin James J.
Seutter Carl G.
Texaco Inc.
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