Abstract: In order to improve the handling capability of red mud, it is mixed with fine-grain coal material such as brown coal or lignite in dust form, in a ratio by weight of between 0.5-10:1. The liquid present in the red mud is bound by the very fine coal admixed therewith so that the resulting mixture can be stored in a silo and even pneumatically conveyed, and the oily properties of the red mud are removed by the treatment. The mixture is particularly suitable for use in connection with the hydrogenating liquefaction of coal in which the red mud is used as a catalyst.
Abstract: A new catalyst composition for converting hydrocarbons is disclosed. Also disclosed is a method for making the catalyst. The catalyst comprises a platinum group component and a phosphorous component with a porous support material. The catalyst is made by compositing a platinum group component with a porous support material and then contacting that composite with phosphorus or a compound of phosphorus. In a preferred embodiment of the invention a catalyst comprising platinum, phosphorus and chlorine with alumina is utilized in the catalytic reforming of hydrocarbons boiling in the gasoline range to produce a high octane reformate suitable for gasoline blending or a high aromatics content reformate suitable as a petrochemical feedstock.
Abstract: In an improved coal liquefaction process, including a critical solvent deashing stage, high value product recovery is improved and enhanced process-derived solvent is provided by recycling second separator underflow in the critical solvent deashing stage to the coal slurry mix, for inclusion in the process solvent pool.
Abstract: A process for preventing the formation of deleterious coke deposits on the walls of coal liquefaction reactor vessels involves passing hydrogen and a feed slurry comprising feed coal and recycle liquid solvent to a coal liquefaction reaction zone while imparting a critical mixing energy of at least 3500 ergs per cubic centimeter of reaction zone volume per second to the reacting slurry.
Type:
Grant
Filed:
January 26, 1982
Date of Patent:
July 3, 1984
Assignee:
The Pittsburg & Midway Coal Mining Co.
Inventors:
Norman L. Carr, Michael E. Prudich, William E. King, Jr., William G. Moon
Abstract: The present invention provides a curable composition comprising (1) at least one epoxy compound containing at least one vicinal-epoxy group and (2) at least one catalyst selected from lithium or Group II metal salts of a non-nucleophilic acid. The present invention further provides an active epoxy curing catalyst composition.
Abstract: A catalyst support is prepared from a composite comprising alumina and one or more oxides of phosphorus by forming the composite into a shaped support material having at least 0.8 cc/gm of its pore volume in pores having diameters of 0 nm (0 .ANG.) to 120 nm (1,200 .ANG.) and at least 0.1 cc/gm of its pore volume in pores having diameters of 120 nm (1,200 .ANG.) to 5,000 nm (50,000 .ANG.) and heating said shaped support material in the presence of steam at sufficient elevated temperature, steam pressure, and time period to increase the average pore diameter of said shaped support in the absence of any appreciable reduction in pore volume.A catalyst is prepared by impregnating the steam-treated support with at least one hydrogenating metal.The catalyst can be used suitably in hydrocarbon conversion processes, such as a process for the hydrodemetallization of a hydrocarbon stream containing asphaltenes and a substantial amount of metals.
Type:
Grant
Filed:
April 15, 1983
Date of Patent:
June 26, 1984
Assignee:
Standard Oil Company (Indiana)
Inventors:
Albert L. Hensley, Jr., Leonard M. Quick
Abstract: Novel compositions are prepared by reacting magnesium hydride and metal oxide gels in the slurry phase. These compositions are useful as catalysts and catalyst supports.
Abstract: High surface area oxidative dehydrogenation catalysts which are suitable for converting C.sub.4 to C.sub.8 monoolefins to diolefins are disclosed, comprising the oxides of an alkali metal, vanadium, phosphorus, potassium and tin in combination with a crystalline silica having a surface area between 30 M.sup.2 /g to 450 M.sup.2 /g and wherein the vanadium has an average valence in the range of from 3.5 to 4.95.
Abstract: A process for the geoconversion of coal into oil comprising the steps of forming a coal slurry, injecting the coal slurry into a preselected oil well to provide an environment for the coal slurry having predetermined pressure conditions of approximately 1500 to 4500 lbs./in..sup.2 and temperature conditions of approximately 200.degree. to 300.degree. F., converting the coal into oil as a result of the combined action of the heat and pressure upon the coal, and removing the resulting oil after sufficient time has elapsed for conversion of the coal into oil.
Abstract: Large surface area oxidative dehydrogenation catalysts which are suitable for converting C.sub.4 to C.sub.8 monoolefins to conjugated dienes are disclosed, comprising the oxides of vanadium, phosphorus, tin and potassium in combination with hydrogen mordenite having a surface area between 30 M.sup.2 /g to 450 M.sup.2 /g and wherein the vanadium has an average valence in the range of from 3.5 to 4.95.
Abstract: The instant invention relates to novel compositions comprising highly dispersed Group VIII noble metal phosphide crystallites supported on a high surface area solid support selected from the group consisting of carbon, alumina, silica, silica-alumina, zeolite, kieselguhr, vermiculite, and the refractory oxides of Group IVb and Vb, transition metals, and mixtures thereof.The supported Group VIII metal phosphide compositions of the instant invention are known to be useful in the selective hydrogenation of liquid hydrocarbons such as diolefins, resins and asphalts. They may also be utilized as electrodes in electrochemical fuel cells.
Abstract: Compositions conforming to the formula A.sub.x.sup.++ B.sub.y.sup.+++ (OH).sub.2x+3y-nz D.sub.z.sup.n-.tH.sub.2 O wherein A is a divalent metal, B is a trivalent metal, D is a polyanion, x, y, z and t are numbers greater than zero and n is a whole number preferably from 1 to 10 and the ratio of x:y is equal to or greater than 0.5 and less than or equal to 10 and a method for preparing said compositions are described.
Abstract: Hydrogen conservation in solvent refining of coal is practiced and solvent compositions and adjusted to needs of two stage operation. The first stage is a short residence time dissolution in a recycle solvent rich in phenols and polyaromatics of high boiling range. The solvent is enriched for the second stage in low boiling hydrogen donors and the product of the process undergoes hydrotreating in an integrated process.
Type:
Grant
Filed:
August 28, 1980
Date of Patent:
June 5, 1984
Assignee:
Electric Power Research Institute
Inventors:
Thomas O. Mitchell, Darrell D. Whitehurst
Abstract: Hydrocarbon liquids are obtained from carbonaceous materials, such as coal, by contacting the carbonaceous materials with a metal carbonyl or a low valent complex of the transition metals and water gas under alkaline conditions to form a reaction mixture, and then heating the reaction mixture to a sufficient temperature and pressure to obtain the hydrocarbon liquids. In a second embodiment, the carbonaceous materials are solubilized to an unexpectedly high degree by contacting them with solvent/solute systems, such as phenolic recycle solvents containing alkali or alkaline-earth metal constituents.
Abstract: Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by hydrothermal pretreatment. The said pretreatment is believed to convert the scale-forming components to the corresponding carbonate prior to liquefaction. The said pretreatment is accomplished at a total pressure within the range from about 1000 to about 4400 psia. Temperature during said pretreatment will generally be within the range from about 500.degree. to about 700.degree. F.
Abstract: Novel compositions are prepared by reacting barium hydride and metal oxide gels in the slurry phase. These compositions are useful as catalysts and catalyst supports.
Abstract: Vanadium phosphorus mixed oxide containing catalysts are prepared in an organic liquid reaction medium with heating wherein at least 1.5 moles organic liquid are removed from the reaction medium such as by distillation for each mole of vanadium which is reduced or reacted during such reaction and/or reduction. The resulting catalysts are useful for the production of maleic anhydride from 4 carbon atom hydrocarbons.
Type:
Grant
Filed:
August 26, 1982
Date of Patent:
May 15, 1984
Assignee:
The Standard Oil Company
Inventors:
Noel J. Bremer, Dennis E. Dria, Andrew M. Weber
Abstract: Coal, petroleum residuum and similar carbonaceous feed materials are subjected to hydroconversion in the presence of molecular hydrogen to produce a hydroconversion effluent which is then subjected to one or more separation steps to remove lower molecular weight liquids and produce a heavy bottoms stream containing high molecular weight liquids and unconverted carbonaceous material. The viscosity of the bottoms streams produced in the separation step or steps is prevented from increasing rapidly by treating the feed to the separation step or steps with ammonia gas prior to or during the separation step or steps. The viscosity of the heavy bottoms stream produced in the final separation step is also controlled by treating these bottoms with ammonia gas. In a preferred embodiment of the invention, the effluent from the hydroconversion reactor is subjected to an atmospheric distillation followed by a vacuum distillation and the feeds to these distillations are contacted with ammonia during the distillations.
Type:
Grant
Filed:
December 30, 1982
Date of Patent:
May 15, 1984
Assignee:
Exxon Research and Engineering Co.
Inventors:
Sioma Zaczepinski, Rustom M. Billimoria, Frank Tao, Christopher G. Lington, Karl W. Plumlee
Abstract: A process for producing a wide slate of fuel products from coal is provided by integrating a methanol-to-gasoline conversion process with coal liquefaction and coal gasification. The coal liquefaction comprises contacting the coal with a solvent under supercritical conditions whereby a dense-gas phase solvent extracts from the coal a hydrogen-rich extract which can be upgraded to produce a distillate stream. The remaining coal is gasified under oxidation conditions to produce a synthesis gas which is converted to methanol. The methanol is converted to gasoline by contact with a zeolite catalyst. Solvent for coal extraction is process derived from the upgraded distillate fraction or gasoline fraction of the methanol-to-gasoline conversion.
Type:
Grant
Filed:
June 23, 1982
Date of Patent:
May 8, 1984
Assignee:
Mobil Oil Corporation
Inventors:
Francis J. Derbyshire, Darrell D. Whitehurst
Abstract: A process for preparing an antimony-containing metal oxide catalyst, comprising the steps of calcining at about 500.degree. to 1,000.degree. C. a metal oxide composition containing, as essential elements, antimony and at least one element selected from the group consisting of iron, cobalt, nickel, manganese, uranium, tin and copper, impregnating the calcined oxide composition with a tellurium-containing solution, drying the impregnated composition, and calcining the dried composition at about 400.degree. to 850.degree. C., wherein the tellurium-containing impregnating solution is a homogeneous, stable solution containing tellurium and at least one element selected from the group consisting of molybdenum and tungsten.Thus process is also useful for the modification of existing metal oxide catalyst of low performance and the reactivation of existing deteriorated metal oxide catalyst.