摘要:
An improved method of preparing a catalyst from a catalyst precursor concentrate is provided. The catalyst precursor concentrate, which is preferably phosphomolybdic acid, is treated at relatively low pressures in a specified manner.
摘要:
Hydroconversion processes utilizing a catalyst prepared from a catalyst precursor concentrate such as phosphomolybdic acid, is provided. The catalyst precursor concentrate is treated at relatively low pressures in a specified manner.
摘要:
A slurry catalytic hydroconversion process comprising at least two hydroconversion zones is provided in which the heavy hydrocarbonaceous fresh oil feed is added to more than one hydroconversion zone. Additional portions of catalysts or catalyst precursors are also added to the first hydroconversion zone and to additional hydroconversion zones wherein said additional hydroconversion zones are maintained at a temperature of at least 10.degree. F. higher than an immediate preceding hydroconversion zone.
摘要:
A slurry catalytic hydroconversion process comprising at least two hydroconversion zones is provided in which the heavy hydrocarbonaceous fresh oil feed is added to more than one hydroconversion zone. Additional portions of catalysts or catalyst precursors are also added to the first hydroconversion zone and to additional hydroconversion zones.
摘要:
Disclosed is a catalytic process for hydroconverting heavy hydrocarbonaceous feedstocks to lower boiling products wherein a catalyst precursor concentrate or catalyst concentrate is first prepared in a heavy oil medium then fed to a hydroconversion zone which may also contain a supported hydrotreating catalyst. The hydroconversion zone may be operated in either slurry or ebullating bed mode.
摘要:
A process for converting a heavy hydrocarbonaceous chargestock to lower boiling products which process comprises reacting the chargestock with a catalyst concentrate in the presence of hydrogen, at hydroconversion conditions, said catalyst concentrate having been prepared by the steps comprising: (a) forming a precursor catalyst concentrate by mixing together: (i) a hydrocarbonaceous oil comprising constituents boiling above about 1050.degree. F.; (ii) a metal compound, said metal being selected from the group consisting of Groups II, III, IV, V, VIB, VIIB, and VIII of the Periodic Table of the Elements, in an amount to provide from about 0.2 to 2 wt. % metal, based on said hydrocarbonaceous oil; (b) heating the precursor concentrate to an effective temperature to produce a catalyst concentrate, wherein elemental sulfur is used an a sulfiding agent in an amount such that the atomic ratio of sulfur to metal is from about 1/1 to 8/1.
摘要:
A catalyst is prepared by heating the reaction product of CrO.sub.3 and tert-butyl alcohol as catalyst precursor in a hydrocarbon medium in the presence of hydrogen sulfide to convert the catalyst precursor to a solid chromium-containing catalyst. Hydroconversion processes utilizing the catalyst to convert oil, coal, and mixtures thereof are also provided.
摘要:
Carbonaceous feeds such as hydrocarbonaceous oils and coal are hydroconverted in the presence of a combination of a hydrogen halide and a metal-containing catalyst produced in situ in the feed. The hydrogen halide is present in an amount to provide from about 0.1 to 20 moles of hydrogen halide per atom of the metal constituent of the catalyst to increase the activity of the catalyst.
摘要:
In the hydroconversion of carbonaceous materials such as hydrocarbonaceous oils and coal or mixtures thereof, in which inorganic poly acids comprising molybdenum or tungsten or salts thereof are used as catalyst precursors which are converted to catalysts, the use of a combination of phosphoric acid and said poly acids or salts thereof as catalyst precursor wherein the amount of phosphoric acid is such as to provide from about 0.5 to about 3.5 atoms of phosphorus per atom of molybdenum or tungsten results in a catalyst having improved activity.
摘要:
A hydrocarbonaceous feed, such as petroleum vacuum distillation bottoms, is upgraded by a combination coking and catalytic slurry hydroconversion process wherein a bottoms fraction from coking is passed to a slurry hydroconversion zone, and the bottoms fraction from the slurry hydroconversion zone is also passed thorugh a microfiltration system to remove catalyst particles.