Patents Examined by G. J. Crasanakis
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Patent number: 4314902Abstract: A process for eliminating and removing impurities including sulfur compounds and microorganisms as well as preventing further microbial contamination is accomplished by treating petroleum products or other hydrocarbon fluids with an aqueous solution of an oxidizing agent such as hydrogen peroxide or ozone together with a metallic ion catalyst, such as a mixture of ferric chloride and cupric chloride, where the metal ion is capable of forming activated oxygen complexes in the presence of such oxidizing agent, or by treatment with an aqueous solution of metallic ion catalyst and activated oxygen complexes formed from permanganate, peroxyborate or chromate ions.Type: GrantFiled: January 3, 1974Date of Patent: February 9, 1982Inventors: Raymond S. Bouk, deceased, by Barbara Bouk, heir
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Patent number: 3996130Abstract: A method of purifying crude petroleum and primary refining products of their sulfur, sulfur compounds, nitrogen- and oxygen-containing compounds which comprises treating crude petroleum or virgin petroleum stocks with complexes or salts of transition metals (.pi. -complexes of transition metals), salts or .pi. -allylic complexes of platinum metals and carbonyl complexes of transition metals at a temperature of 80.degree.-120.degree. C, followed by separating the purified target product from the resulting reaction mixture. stabilityThe method of the invention makes it possible to effect petroleum product purification as a single-stage process and, in contrast to the available methods, dispenses with the employment of hydrogen, catalysts, and aqueous alkalies.Type: GrantFiled: January 3, 1974Date of Patent: December 7, 1976Inventors: Nikolai Sergeevich Nametkin, Sergel Pavlovich Gubin, Vladimir Dmitrievich Tjurin, Viktor Viktorovich Fedorov, Leonid Ivanovich Larionov, Vladimir Alexandrovich Kozin, Naum Borisovich Zhadanovsky, Ruslan Yakovlevich Barashkov
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Patent number: 3992326Abstract: A catalyst composition for hydrocarbon conversions such as paraffin isomerization is described which comprises a porous, refractory inorganic oxide carrier having deposited thereon a fused salt complex consisting of aluminum chloride and/or bromide and manganous chloride and/or bromide, said fused salt complex being formed by heating a composite mixture of the halide salts to a temperature above the melting point of the composite.Type: GrantFiled: July 3, 1975Date of Patent: November 16, 1976Assignee: Shell Oil CompanyInventor: Herbert L. Benson, Jr.
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Patent number: 3985643Abstract: An improved process for desulfurization of metals and sulfur containing petroleum oils, preferably those containing residua hydrocarbon components, comprising passing the sulfur containing petroleum oils through a bed of substantially aged desulfurization catalyst at a temperature not less than 770.degree.F preceeding conventional hydrodesulfurization treatment.Type: GrantFiled: August 28, 1974Date of Patent: October 12, 1976Assignee: Mobil Oil CorporationInventor: Donald Milstein
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Patent number: 3981942Abstract: A control system for regulating the reaction zone temperature in a process for the acid-catalyzed reaction of an isoparaffin with an olefinic feed stream containing mixed olefins. Hydrocarbon analyzers produce process output signals which are representative of composition characteristics of the fresh olefinic feed stream and the liquid alkylate product. These process output signals are transmitted to computer/comparator means which develops an output signal as a function thereof. The computer output signal is employed to adjust the reaction zone temperature to obtain the optimum consistent with a given feed composition and desired alkylate product quality. The control system rapidly compensates for continuing changes in feed composition which, at a fixed reaction zone temperature, would otherwise adversely affect the alkylate product quality.Type: GrantFiled: August 7, 1975Date of Patent: September 21, 1976Assignee: Universal Oil Products CompanyInventor: Robert F. Zabransky
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Patent number: 3980552Abstract: Residual oils comprising asphaltenes, metal compounds, and refractory sulfur compounds are hydrodesulfurized by contact with a unique type of cobalt-molybdenum-alumina catalyst characterized by certain critical physical properties of surface area, pore volume, pore size distribution, and by a particle-form shape exhibiting a ratio of external surface area to volume of between about 70 and 160 reciprocal inches. The most critical characteristic of the catalyst, which appears to account mainly for its exceptionally high activity, stems from its method of manufacture. This method involves first mixing an alumina hydrogel with an ammonium molybdate solution, spray drying the resulting slurry to a water content of about 10-40 weight-percent, remulling the spray-dried composite with water, extruding the composite into extrudates of specific size ranges, calcining the extrudates, impregnating the calcined extrudates with an aqueous solution of a cobalt compound, and finally calcining the impregnated extrudates.Type: GrantFiled: May 5, 1975Date of Patent: September 14, 1976Assignee: Union Oil Company of CaliforniaInventor: Grant A. Mickelson
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Patent number: 3979475Abstract: Lean HF is used to extract ethyl fluoride from depropanizer overhead by steps including contacting liquid propane containing ethyl fluoride with lean HF thus taking ethyl fluoride into the HF phase, contacting vent gas from the depropanizer overhead with lean HF thus taking into the HF ethyl fluoride from the vent gases, and passing thus enriched HF phases to an alkylation reactor thus recovering ethyl fluoride and HF acid for use in the alkylation reaction. There are recovered a propane yield stream substantially free from ethyl fluoride as well as a vent gas also substantially free from ethyl fluoride.Type: GrantFiled: December 10, 1974Date of Patent: September 7, 1976Assignee: Phillips Petroleum CompanyInventor: Cecil O. Carter
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Patent number: 3979476Abstract: A catalytic composite suitable for hydrocarbon conversion processes, comprising hydrogen fluoride-antimony pentafluoride supported on fluorided alumina, having a fluorine content of at least 55 weight percent. Preferably the fluorided alumina support contains at least 60 weight percent fluorine and has a surface area less than 10 m.sup.2 /gram. The catalyst is particularly useful for isomerization and alkylation processes.Type: GrantFiled: November 25, 1974Date of Patent: September 7, 1976Assignee: Chevron Research CompanyInventor: Jacob D. Kemp
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Patent number: 3976562Abstract: A hydrodesulfurization process is conducted in the presence of an added C1 to C4 alcohol, preferably methanol, or an alcohol-water mixture. The addition of alcohol improves the activity of the catalyst and results in a net production of heat which can be utilized to vaporize the incoming alcohol.Type: GrantFiled: June 17, 1975Date of Patent: August 24, 1976Assignee: Exxon Research and Engineering CompanyInventor: Paul E. Eberly, Jr.
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Patent number: 3976559Abstract: A process for the combined hydrodesulfurization and hydroconversion of certain heavy hydrocarbon feedstocks is disclosed. Specifically, asphaltene-containing feedstocks, such as residua feedstocks, are initially contacted with a hydrodesulfurization catalyst which selectively avoids the conversion of the asphaltene agglomerates and metal-containing compounds therein, so that said feedstock is at least partially desulfurized, and then is contacted with an alkali metal in a conversion zone at elevated temperatures and in the presence of added hydrogen so that said feedstock is both further desulfurized and hydroconverted, preferably so that at least about 50 percent of the 1050.degree.F+ portion of the feedstock is converted to lower boiling products.Type: GrantFiled: April 28, 1975Date of Patent: August 24, 1976Assignee: Exxon Research and Engineering CompanyInventors: Roby Bearden, Jr., Glen Porter Hamner
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Patent number: 3976714Abstract: Normal paraffin alkylation with an alkylating agent, i.e. olefin, alkylhalide or alcohol, is effected in the presence of a catalyst of graphite having intercalated in the lattice thereof between about 5 and about 75 weight percent of a Lewis acid. The catalyst utilized in alkylation has additionally intercalated therein between about 0.1 and about 20 weight percent of a Group VIII metal.Type: GrantFiled: June 26, 1975Date of Patent: August 24, 1976Assignee: Mobil Oil CorporationInventor: Paul G. Rodewald
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Patent number: 3975259Abstract: A hydrocarbon feedstock, such as a residum from atmospheric or vacuum distillation columns containing large quantities of sulfur is combined with a hydroconversion catalyst having a nominal particle size of less than 10 microns to form a suspension. The resulting suspension and a hydrogen-containing gas are fed upwardly through a contact zone in plug-flow at an elevated temperature and pressure and at a weight hourly space velocity of between 200 and 50,000 kg. of oil per kg. of catalyst per hour. The resulting product containing the catalyst suspended therein is continuously withdrawn from the contact zone. The normally gaseous materials are separated from the liquid product having a substantially reduced sulfur content. The catalyst is carried through the entire process suspended in liquid in a single pass without the necessity of recycling or regeneration and remains in the desulfurized product.Type: GrantFiled: July 10, 1975Date of Patent: August 17, 1976Assignee: Air Products and Chemicals, Inc.Inventor: Louis C. Doelp
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Patent number: 3974066Abstract: A method is disclosed for the treatment of a petroleum charge stock which comprises the treatment of said petroleum charge stock with an aqueous solution containing a metal phthalocyanine compound and a compound selected from the group consisting of an alkali metal sulfide and an alkali metal sulfite.Type: GrantFiled: June 12, 1975Date of Patent: August 10, 1976Assignee: Universal Oil Products CompanyInventors: Kenneth M. Brown, Thomas A. Verachtert
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Patent number: 3974065Abstract: A method is disclosed for obtaining an early detection and warning of a dangerous temperature excursion in a process using one or more hydrocarbon hydroprocessing reactors operating under otherwise ordinary hydroprocessing conditions. The warning is obtained by monitoring the specific gravity and/or methane content of the light gas fraction of the reactor effluent product stream. Pursuant to the warning, one or more suitable quenching means are employed to control the excursion.Type: GrantFiled: December 31, 1974Date of Patent: August 10, 1976Assignee: Chevron Research CompanyInventors: Bruce E. Powell, Bruce E. Stangeland
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Patent number: 3972956Abstract: A used HF catalyst rerun unit comprises in tandem at least two strippers, a first to remove substantially all readily vaporizable components, e.g., light hydrocarbons and HF, and to separate acid-soluble oils as a liquid residue, and a second to produce rerun HF vapors and a stream of water containing HF. In an alkylation of a hydrocarbon operation, e.g., an isoparaffin by an olefin, said stream is used by reaction with an olefin to produce alkyl fluoride which can be fed to the alkylation reaction. Either before or after such reaction the stream is used to remove from noncondensible gas, as in a vent gas absorber, HF vapors therein contained and the stream returned to the HF rerun unit.Type: GrantFiled: April 11, 1975Date of Patent: August 3, 1976Assignee: Phillips Petroleum CompanyInventor: Cecil O. Carter
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Patent number: 3972853Abstract: A stabilized lubricating oil resistant to oxidation and sludge formation upon exposure to an oxidative environment is prepared without forming undesirable color bodies therein by contacting the lubricating oil stock with a small amount of elemental sulfur of from about 0.1 to about 0.5 percent by weight at a contact temperature of from about 25.degree.C to about 70.degree.C and, thereafter, removing any unreacted sulfur therefrom.Type: GrantFiled: August 8, 1974Date of Patent: August 3, 1976Assignee: Mobil Oil CorporationInventors: Robert L. Gorring, Eric J. Y. Scott, Robert L. Smith
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Patent number: 3972957Abstract: A control system for regulating the reaction zone temperature in a process for the acid-catalyzed alkylation of an isoparaffin with a mixed olefinic feed stream. Composition characteristics of the liquid alkylate product and the olefinic feed stream are determined, and representative output signals transmitted to computer/comparator means which generates a computer output signal in response to, and as a function thereof. The computer output signal is employed to adjust the reaction zone temperature, for a given olefinic feed composition, in order to maximize the octane rating of the liquid alkylate product. The control system effects rapid compensation for feed composition changes which would otherwise adversely affect the product octane rating.Type: GrantFiled: June 20, 1975Date of Patent: August 3, 1976Assignee: Universal Oil Products CompanyInventor: Robert F. Zabransky
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Patent number: 3972958Abstract: An integrated process for converting coal to high octane gasoline by gasifying the coal in such manner as to form a gas comprising carbon oxides, hydrogen and methane; contacting this gas in one or a series of steps with one or a series of catalysts, respectively comprising a special high silica to alumina ratio zeolite; converting the carbon oxides and hydrogen by such contact to a product comprising water, high octane aromatic gasoline and light hydrocarbon gases; alkylating the C.sub.3 and C.sub.4 olefins with the isobutane in the light gases to produce alkylate gasoline; admixing the aromatic and alkylate gasoline; and subjecting the C.sub.2 .sup.- portion of the product to steam reforming whereby additional synthesis gas to be admixed with the gas produced by coal gasification is formed.Type: GrantFiled: April 8, 1975Date of Patent: August 3, 1976Assignee: Mobil Oil CorporationInventors: William E. Garwood, Solomon M. Jacob, James C. Kuo, John J. Wise
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Patent number: 3970545Abstract: A process for reducing the sulfur content of hydrocarbon material by contacting, e.g., heating, the sulfur-containing hydrocarbon material with at least one hydrocarbon hydrogen donor component capable of transferring hydrogen under conditions such that hydrogen transfer from said component to the sulfur-containing hydrocarbon material occurs to form hydrogen sulfide, oxidizing at least a portion of the remaining sulfur impurities contained in the hydrocarbon material and recovering a hydrocarbon material of reduced sulfur content.Type: GrantFiled: March 19, 1975Date of Patent: July 20, 1976Assignee: Atlantic Richfield CompanyInventors: Jin S. Yoo, Andrew P. Voss
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Patent number: 3970721Abstract: A liquid phase alkylation process for production of alkylate useful as motor fuel, wherein low molecular weight isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of a catalyst, comprising a mixture of a major portion of sulfuric acid (H.sub.2 SO.sub.4) with a minor portion of trifluoromethane sulfonic acid (CF.sub.3 SO.sub.3 H) which may contain about 0-3 weight percent water and about 0-10 weight percent acid oils.Type: GrantFiled: March 24, 1975Date of Patent: July 20, 1976Assignee: Texaco Inc.Inventors: James W. Brockington, Richard H. Bennett