Process for demetalation and desulfurization of petroleum oils
AssigneeMobil Oil Corporation
InventorsStephen M. Oleck, Howard S. Sherry, Ronald H. Fischer, Donald Milstein
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Abstract
This invention is concerned with removing metal and sulfur contaminants from residual oil fractions by catalytic contact with an improved catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal supported on an alumina that contains dispersed Delta and/or Theta phase alumina, the catalyst having at least 45% of its pore volume in pores 30 to 150A diameter, at least 10% of its pore volume in pores less than 30A diameter, and at least 15% of its pore volume in pores greater than 300A diameter. The process can be used to prepare feedstock for catalytic cracking.
Claims6
A process for catalytically demetalizing and desulfurizing a hydrocarbon oil containing high metal and sulfur components, which comprises contacting said oil and hydrogen with a catalyst under demetallizing and desulfurizing conditions including a hydrogen pressure of about 500 to 3000 p.s.i.g., a hydrogen circulation rate of about 1000 to 15,000 scf/bbl of feed, a temperature of about 600.degree. to 850.degree. F, and a space velocity of 0.1 to 5.0 LHSV, said catalyst comprising the oxides or sulfides of a Group VIB metal and the oxides or sulfides of an iron group metal composited with a support consisting essentially of an intimate mixture of gamma alumina with an alumina selected from the group consisting of Delta phase alumina, Theta phase alumina, and mixtures thereof, said catalyst having at least 45% of its pore volume in pores 30 to 150A diameter, at least 10% of its pore volume in pores less than 30A diameter, at least 15% of its pore volume in pores greater than 300A diameter, and a surface area of 125 to about 210 m.sup.2 /g.
Dependencies are inferred from the claim text.