초록 ▼

A process is described for hydrotreating residual oil fractions in an improved dual bed catalyst system comprising a first large-pore catalyst and a second small-pore catalyst in which at least the second catalyst and preferably both catalysts have a quadrulobal shape. Using cobalt and molybdenum co

A process is described for hydrotreating residual oil fractions in an improved dual bed catalyst system comprising a first large-pore catalyst and a second small-pore catalyst in which at least the second catalyst and preferably both catalysts have a quadrulobal shape. Using cobalt and molybdenum composited on alumina as these catalysts, residua are demetalized, desulfurized, and reduced in carbon residue, whereby hitherto unusable residue can be hydroprocessed.

대표청구항 ▼

In the preparation of suitable feed stocks for catalytic cracking, an improved process for reducing Conradson carbon content, metals content, and sulfur content in residual oils in order to convert said oils into said suitable feed stocks, comprising: A. passing a mixture of hydrogen and said oils a

In the preparation of suitable feed stocks for catalytic cracking, an improved process for reducing Conradson carbon content, metals content, and sulfur content in residual oils in order to convert said oils into said suitable feed stocks, comprising: A. passing a mixture of hydrogen and said oils at hydrogen pressure of about 500 to 3000 psig, a temperature of about 600°to 850°F., and a space velocity of 0.1 to 5.0 LHSV, through a trickle bed of first catalyst, said first catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on a support comprising a delta or theta phase alumina, said first catalyst having also at least about 60 percent of its pore volume in pores with diameters of about 100 to 200 A, at least about 5 percent of its pore volume in pores greater than 500 A, and a surface area of up to about 110 m2/g; and B. then passing said mixture of hydrogen and said oils through a bed of second catalyst disposed downstream of said first catalyst, said second catalyst comprising the oxides or sulfides of a Group VIB metal and an iron group metal on an alumina support, said second catalyst having a surface area of at least 150 m2/g, a quadrulobe shape, and at least 50 percent of its pore volume in pores with diameters of 30 to 100 A.