Abstract:
A hydrofining-hydrocracking process which comprises contacting a hydrocarbon feed containing more than 50 parts per million of organic nitrogen and substantial amounts of materials boiling above 200* F., said feed being selected from the group consisting of petroleum distillates, solvent-deasphalted petroleum residua, shale oils and coal tar distillates, in a reaction zone with hydrogen and a catalyst, a t hydrofining-hydrocracking conditions including a temperature in the range 400* to 950* F., a pressure in the range 800 to 3,500 psig, a liquid hourly space velocity in the range 0.1 to 5.0, and a total hydrogen supply rate of 200 to 20,000 SCF of hydrogen per barrel of feedstock, removing ammonia from the effluent from said reaction zone, and recovering hydrofined and hydrocracked products from said reaction zone, said catalyst comprising: A. A gel matrix comprising: A. AT LEAST 15 WEIGHT PERCENT SILICA, B. ALUMINA, IN AN AMOUNT PROVIDING AN ALUMINA-TO-SILICA WEIGHT RATIO OF 15/85 TO 80/20, C. Nickel or cobalt, or the combination thereof, in the form of metal, oxide, sulfide or any combination thereof, in an amount of 1 to 10 weight percent, based on said matrix, calculated as metal, D. Molybdenum or tungsten, or the combination thereof, in the form of metal, oxide, sulfide or any combination thereof, in an amount of 5 to 25 weight percent, based on said matrix, calculated as metal; B. A crystalline zeolitic molecular sieve: A. CONTAINING LESS THAN 5 WEIGHT PERCENT SODIUM, B. CONTAINING IONS SELECTED FROM Mn, rare earths of atomic numbers 58 to 71, and alkaline earths Mg, Ca, Sr and Ba, C. BEING SUBSTANTIALLY FREE OF ANY CATALYTIC LOADING METALS, D. BEING IN PARTICULATE FORM AND BEING DISPERSED THROUGHOUT SAID MATRIX BY COGELATION OF SAID MATRIX AROUND SAID SIEVE; SAID CATALYST COMPOSITE BEING FURTHER CHARACTERIZED BY AN AVERAGE PORE DIAMETER BELOW 100 Angstroms and a surface area above 200 square meters per gram.
Abstract:
A catalytic slurry process for effecting the conversion of a hydrocarbonaceous charge stock containing asphaltenes and metallic contaminants. The slurry constitutes charge stock, hydrogen, from about 1.0 to about 25.0 percent by weight of finely divided catalyst particles and, in a preferred embodiment, a portion of the previously produced product effluent. Preferred catalysts are the unsupported sulfides of the metals from Groups V-B, VI-B and VIII. Prior to an initial separation, hydrogen sulfide is commingled with the product effluent in order to convert the metals contained therein to the sulfides thereof.
Abstract:
In the catalytic hydrogenation of a substance in a water-immiscible organic liquid medium, a metallic hydrogenation catalyst is conveniently and effectively dispersed in the reaction mixture by addition as an emulsion of an aqueous solution of a salt of the metal in the liquid medium. The method is particularly applicable to the liquefaction of coal.
Abstract:
Hydrocarbon conversion is effected by hydrocracking a charge stock at mild cracking conditions followed by alkyl transfer typically transalkylation or disproportionation or isomerization under conditions conducive to extended catalyst life.
Abstract:
Low concentrations of Group VIB metal salts of fatty acids will catalyze the hydroconversion of sulfur-containing heavy petroleum oils producing a lighter oil fraction having a lower sulfur concentration than the heavy oil and a tar fraction containing a higher sulfur concentration than the heavy oil. Catalyst concentrations of 300 to 1,000 ppm, calculated as the elemental metal, are used. Molybdenum octoate is a preferred catalyst. This is a continuation, of application Ser. No. 400,866, filed Sept. 26, 1973, and now abandoned.
Abstract:
Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatures. The mixture of reaction products resulting from the above procedure is separated to give a sodium sulfur salt by-product, and a petroleum oil product which has been substantially desulfurized and demetallized, as well as being significantly improved as indicated by a reduced Conradson carbon content and an increased API gravity relative to the feedstock. Sodamide is regenerated from the sodium sulfur salt by-product and can be recycled for reaction with additional feedstock.
Abstract:
Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatures. The mixture of reaction products resulting from the above procedure is separated to give a sodium sulfur salt by-product, and a petroleum oil product which has been substantially desulfurized and demetallized, as well as being significantly improved as indicated by a reduced Conradson carbon content and an increased API gravity relative to the feedstock. Sodamide is regenerated from the sodium sulfur salt by-product and can be recycled for reaction with additional feedstock.
Abstract:
Hydrocarbon tars of high asphaltene content such as tars obtained from pyrolysis of coal are dissolved in a solvent formed from the hydrogenation of the coal tars, and the resultant mixture hydrogenated in the presence of a catalyst at a pressure from about 1500 to 5000 psig at a temperature from about 500.degree. F to about the critical temperature of the solvent to form a light hydrocarbon as a solvent for the tars. Hydrogen content is at least three times the amount of hydrogen consumed.
Abstract:
Heavy mineral oil fractions are selectively hydrocracked to produce mainly middle distillate oils boiling in the 300.degree.-700.degree. F range. Certain novel, highly active and selective catalysts are utilized comprising molybdenum and/or tungsten plus nickel and/or cobalt supported upon certain heterogeneous composites of a silica-alumina cogel or copolymer dispersed in a matrix consisting essentially of alumina gel.