Abstract:
A method of reducing the concentration of metal contaminants, such as vanadium and nickel, in distillates of a fossil fuel feedstock is disclosed. The method comprises producing a selected distillate fraction and demetallizing this distillate by suitable means, thereby upgrading and making it suitable for use as feed to a catalytic cracker.
Abstract:
An improved process is provided for hydroconverting of coal in which a hydrocarbon-dispersible chromium compound is mixed with a hydrocarbonaceous material, in the absence of coal, to form a high metals-containing catalyst precursor concentrate which is heated in the presence of a hydrogen sulfide-containing gas to form a solid chromium-containing catalyst. A portion of the concentrate containing the catalyst is introduced into a diluent to which coal is added or in which coal is present. The resulting mixture is subjected to hydroconversion conditions to convert the coal to a hydrocarbonaceous oil product.
Abstract:
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.
Abstract:
A catalyst comprising a composition comprising a catalytic metal component, carbon and hydrogen deposited on a low surface area metal or metal alloy support is provided. Hydrocarbon treating and conversion processes utilizing the catalyst are also provided. The catalyst is particularly suitable for slurry processes.
Abstract:
A process for catalytically hydroconverting a mixture of coal and a hydrocarbonaceous oil is effected by forming a mixture of a thermally decomposable metal compound, oil and coal, converting the compound to a catalyst within the mixture and reacting the mixture with hydrogen. Preferred compounds are molybdenum compounds.
Abstract:
A catalyst is provided which comprises a composition comprising a catalytic metal component, carbon and hydrogen deposited on a low surface area aluminum alloy powder support prepared by atomizing the metal alloy. Hydrocarbon treating and conversion processes utilizing the catalyst are also provided. The catalyst is particularly suitable for slurry processes.
Abstract:
A catalytic hydrocracking process for a hydrocarbonaceous oil is effected by dispersing a thermally decomposable metal compound in the oil, heating the compound in the presence of a hydrogen-containing gas to form a solid, non-colloidal catalyst within the oil and reacting the oil containing the catalyst with hydrogen. Preferred thermally decomposable compound are molybdenum compounds.
Abstract:
A coal liquefaction chargestock is first treated with a gaseous mixture comprising at least 5 mole percent hydrogen sulfide at a temperature varying from about 343.degree. C. to about 449.degree. C. for at least 8 minutes and thereafter subjected to coal liquefaction conditions.
Abstract:
Heavy petroleum oils, preferably whole crude or residua, are desulfurized and upgraded by contacting the petroleum oil with sodium oxide in the presence of hydrogen at elevated temperatures. The resulting mixture comprising desulfurized petroleum oil and a dispersion of sodium salts, primarily sodium sulfide and sodium hydroxide, is separated by conventional means and sodium oxide is regenerated from the salts.
Abstract:
Heavy carbonaceous feeds, including various sulfur-containing heavy petroleum oils, are simultaneously desulfurized and subjected to hydroconversion by contacting these feedstocks with alkali metal oxides in a conversion zone maintained at elevated temperatures and in the presence of hydrogen. In this manner, the feeds are substantially desulfurized, and significant upgrading of the feedstocks is also obtained as demonstrated by decreased Conradson carbon, increased API gravity, and conversion of a substantial portion of the 1,050.degree. F+ portion of the feedstream. In addition, methods for the regeneration of the alkali metal oxides from the alkali metal sulfide salts produced in the reaction zone are disclosed.