Oil Patents (Class 48/211)
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Publication number: 20040148862Abstract: A heat exchanger (60) for a fuel processing system (10) that produces a hydrogen reformate gas. The heat exchanger (60) includes a catalyst for converting carbon monoxide to carbon dioxide. The heat exchanger (60) can be any suitable heat exchanger, such as a tube and fin type heat exchanger, that is able to cool the reformate gas and includes a suitable surface on which the catalyst can be coated. In one embodiment, the heat exchanger (60) is part of a WGS reactor assembly (48). The WGS reactor assembly (48) includes a first stage WGS adiabatic reactor (52) followed by the catalyzed heat exchanger (60) and a second stage WGS adiabatic reactor (68). Also, in one embodiment, both the first stage and the second stage WGS reactors (52, 68) are medium temperature reactors. By catalyzing the heat exchanger (60) in the WGS reactor assembly (48), the assembly (48) can be smaller than what is currently known in the art.Type: ApplicationFiled: September 17, 2003Publication date: August 5, 2004Inventors: Paul Taichiang Yu, Steven D. Burch, John C. Fagley, Annette M. Brenner, Reena L. Datta
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Patent number: 6769244Abstract: A method of operating a combustion apparatus such as an internal combustion engine is described, in which the apparatus includes at least one combustion chamber with an inlet port for primary combustion air, an apparatus to introduce into the combustion chamber primary fuel for combustion with the primary air, an exhaust port for combustion products, and an exhaust system for exhausting the combustion products to atmosphere, the method including introducing into the exhaust system secondary air, mechanically acting upon the secondary air and products of combustion in the exhaust system in the presence of a catalyst, to produce a reformed fuel, introducing the reformed fuel into the combustion chamber for combustion with primary fuel and primary air.Type: GrantFiled: June 25, 2002Date of Patent: August 3, 2004Assignee: Ribbit LimitedInventors: Ronald Headley, Patrick Jones
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Publication number: 20040144030Abstract: A partial oxidation fuel reformer in includes a torch assembly for generating a near-stoichiometric flame through which a relatively rich “primary” air/fuel mixture is advanced. The torch assembly includes a low-energy ignition source such as a conventional sparkplug. The flame has sufficient energy to ignite the primary mixture to facilitate a partial oxidation reaction. A method of operating a partial oxidation fuel reformer is also disclosed.Type: ApplicationFiled: January 23, 2003Publication date: July 29, 2004Inventor: Rudolf M. Smaling
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Patent number: 6733552Abstract: A hydrogen generating apparatus having a fuel feeding part, a water feeding part for fuel reforming, an oxidant gas feeding part, a reforming catalyst body, a heating part for the reforming catalyst, a CO shifting catalyst body and a CO purification catalyst body is provided wherein the reforming catalyst body, the CO shifting catalyst body and the CO purification catalyst body are sequentially ordered from the fuel feeding part toward the downstream side, and wherein a shifting catalyst of the shifting catalyst body contains as one component at least a platinum group-type catalyst.Type: GrantFiled: March 13, 2000Date of Patent: May 11, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kiyoshi Taguchi, Takeshi Tomizawa, Kunihiro Ukai, Toshiyuki Shono, Kouichiro Kitagawa
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Publication number: 20040083651Abstract: An apparatus which is capable of supporting a process for gasifying a variety of hydrocarbon-containing materials. The resulting hydrogen-containing gas is suitable for use in various combustion processes and for petrochemical processes. A hydrocarbon-containing material is mixed with natural gas (or other suitable hydrocarbon gas) under pressure. The suspended material and gas are then injected under pressure into an acceleration/gasification tube. Intense heat (provided by an external energy source) is applied to the mixture as it travels through this tube, resulting in the cracking of the hydrocarbon chains and the release of additional energy. The released bond energy, along with the addition of the external energy, rapidly expands the gas and causes the velocity of the moving mixture to rise sharply as it proceeds down the tube. The acceleration/gasification tube is connected to a diffuser, which is essentially an expansion nozzle with a series of heat exchangers to cool the rapidly expanding gas.Type: ApplicationFiled: October 28, 2003Publication date: May 6, 2004Inventors: Thomas W. Kaufman, Verner Christensen
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Patent number: 6676716Abstract: A method and apparatus for treating wastes by gasification recovers useful resources including energy, valuables such as metals, and gases for use as synthesis gas for chemical industries or fuel. The wastes are gasified in a fluidized-bed reactor at a relatively low temperature. Gaseous material and char produced in the fluidized-bed reactor are introduced into a high-temperature combustor, and low calorific gas or medium calorific gas is produced in the high-temperature combustor at a relatively high temperature. The fluidized-bed reactor preferably is a revolving flow-type fluidized-bed reactor. The high-temperature combustor preferably is a swirling-type high-temperature combustor.Type: GrantFiled: January 19, 2001Date of Patent: January 13, 2004Assignee: Ebara CorporationInventors: Hiroyuki Fujimura, Shosaku Fujinami, Tetsuhisa Hirose, Takahiro Oshita, Masaaki Irie, Kazuo Takano
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Publication number: 20030196381Abstract: An evaporator device for generating a hydrocarbon-air mixture which can be decomposed in a reformer for producing hydrogen comprises a burner/evaporator area, which has a combustion/mixing chamber (14), into which air enters via an inlet opening device (16), a hydrocarbon evaporating means (24, 34), comprising a porous evaporator medium (24) and, associated with same, a first heating means (34) and a glow-type igniting member (28) for igniting the hydrocarbon-air mixture present in the combustion/mixing chamber (14).Type: ApplicationFiled: February 26, 2003Publication date: October 23, 2003Inventor: Gunter Eberspach
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Publication number: 20030192251Abstract: A steam reformer that produces hydrogen gas from water and a carbon-containing feedstock, such as an alcohol or a hydrocarbon. The steam reformer includes a hydrogen-producing region, in which a mixed gas stream containing hydrogen gas and other gases is produced from water and a carbon-containing feedstock. The steam reformer includes a separation region, in which the mixed gas stream is separated into a hydrogen-rich stream containing at least substantially pure hydrogen gas, and a byproduct stream containing at least a substantial portion of the other gases. In some embodiments, the steam reformer is a vertically oriented fuel processor. In some embodiments, the separation region includes at least one hydrogen-selective membrane. In some embodiments, the steam reformer further includes a polishing region, in which the hydrogen-rich stream produced in the separation region is further purified. In some embodiments, the reformer includes an external metal or sealed ceramic shell.Type: ApplicationFiled: April 4, 2003Publication date: October 16, 2003Inventors: David J. Edlund, Arne LaVen, Timothy G. Mace, William A. Pledger, R. Todd Studebaker, Douglas J. Wambaugh
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Publication number: 20030182862Abstract: A method for generating a hydrogen-containing product gas from liquid or gaseous hydrocarbons includes providing a reformer installation having a combustion space, a mixing chamber and a reformer unit. Partial oxidation of a first hydrocarbon stream with a first oxygen-containing gas stream is performed and a first product-gas stream containing hydrogen is formed, in the combustion space. A second hydrocarbon stream is reformed with water and a second product gas stream containing hydrogen is formed, in the reformer unit. The first product-gas stream and the second product-gas stream are mixed in the mixing chamber to form a third product-gas stream. The reformer unit is heated with the third product-gas stream.Type: ApplicationFiled: April 17, 2003Publication date: October 2, 2003Inventor: Walter Jager
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Patent number: 6623537Abstract: The raw syngas generated in a partial oxidation gasifier also includes carbon soot which is removed and recovered from the syngas by scrubbing with water. The scrubbing water contains one or more high temperature surfactants which allow greater soot concentrations in the water-scrubbing quench zone of the gasifier. The carbon soot is separated from the scrubbing water with the aid of a scrubbing oil. The separation of the carbon soot from the scrubbing water is enhanced with the aid of one or more surfactants that render the soot particles hydrophobic and oleophilic. The recovered carbon soot is ultimately recycled to the gasifier to recover the energy value of the carbon during the partial oxidation reaction. The overall energy efficiency of the gasification process can be increased by removing all or a significant portion of the water from the soot mixture before recycling the soot.Type: GrantFiled: March 9, 2001Date of Patent: September 23, 2003Assignee: Texaco Inc.Inventor: Frederick C. Jahnke
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Patent number: 6610112Abstract: The present invention relates to a method for oil gasification. In particular, the present invention relates to a method for oil gasification while reducing wastewater and costly purification systems. The method comprises providing feedstock and water to an oil gasification system; receiving flash gas from the oil gasification system at a flash gas condensing section; extracting vapor generated by the flash gas condensing section; returning water produced by the extracting step to the flash gas condensing section; outputting dry flash gas produced by the extracting step; receiving spent wash water at a syngas cooling section from a syngas washing section; and outputting washed syngas from the syngas washing section.Type: GrantFiled: December 7, 1999Date of Patent: August 26, 2003Assignee: Texaco Inc.Inventors: Byron Von Klock, Henry C. Chan
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Publication number: 20030140559Abstract: A method serves for the pyrolysis and gasification of substance mixtures containing organic constituents. The organic substances (4) or the substance mixture containing the organic constituents are brought into contact with a heat transfer medium, for preference the ash (5) from a combustion reactor (2) in a pyrolysis reactor (1), for preference a shaft reactor and pyrolysed. The pyrolysis coke (10) derived from the pyrolysis is combusted in a combustion reactor (2), for preference a fluidised bed reactor, under the admission of air (11).Type: ApplicationFiled: January 10, 2003Publication date: July 31, 2003Inventors: Wolfgang Krumm, Gunter Funk, Stefan Hamel, Christian Mertens
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Publication number: 20030084613Abstract: A method of producing a synthesis gas by a reforming reaction of an organic compound with a reforming agent, in which the reforming reaction is performed using nonthermal plasma.Type: ApplicationFiled: October 29, 2002Publication date: May 8, 2003Inventors: Shigeru Futamura, Hajime Kabashima, Hisahiro Einaga
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Publication number: 20030079411Abstract: A device for decomposing an organic compound, which heats and decomposes organic compounds in at least one pyrolysis zone in a gas phase is disclosed. The pyrolysis zone comprises at least one high-frequency induction-heating device provided within a gas passage.Type: ApplicationFiled: July 22, 2002Publication date: May 1, 2003Applicant: Ken KANSAInventors: Ken Kansa, Yoshihide Mukouyama, Masatoshi Matsuba
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Patent number: 6162266Abstract: An apparatus and a process for cooling a feed injector of a gasification reactor that produces synthesis gas is described. Cooling fluid is injected into a channel in the feed injector adapted for circulating the fluid. The injection pressure is maintained near or above the gasification reactor pressure. The fluid is withdrawn from the channel through an outlet at an outlet pressure between about 515 KPa above to about 1030 KPa below the gasification reactor pressure. The fluid is cooled, degassed, and injected back into the channel in the feed injector. The pressure on the cooling system is variable and tracks the gasification reactor pressure.Type: GrantFiled: June 5, 1998Date of Patent: December 19, 2000Assignee: Texaco Inc.Inventors: Paul S. Wallace, Kay A. Johnson, DeLome D. Fair, Fred C. Jahnke
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Patent number: 6033448Abstract: The present invention provides a method for manufacturing a gasified fuel. The fuel is gasified by partial oxidation of a fuel layer obtained from a raw fuel which contains water and has decreased viscosity. The fuel layer is subjected to partial oxidation by being exposed to oxygen, producing a gasified fuel having a low water content. The separation of the raw fuel into a water layer and a fuel layer can be accelerated by adding an emulsion breaker to the raw fuel or by applying an electric field.Type: GrantFiled: February 8, 1997Date of Patent: March 7, 2000Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Masaki Iijima, Satoshi Uchida, Osamu Shinada
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Patent number: 5800798Abstract: A process of producing a fuel gas for fuel cells, which comprises the steps of: a) treating kerosine having a sulfur content not higher than 5 ppm with a desulfurizing agent to reduce the sulfur content of said treated kerosine to 0.2 ppm or less and b) contacting said treated kerosine from step a) with a steam reforming catalyst to provide a fuel gas mainly composed of hydrogen, said desulfurizing agent in step a) comprising a copper-nickel alloy having a copper to nickel ratio by weight of 80:20 to 20:80 and at least one carrier selected from the group consisting of Al.sub.2 O.sub.3, ZnO and MgO, and the total content of copper and nickel in terms of metals in said desulfurizing agent being in the range of 40 to 70% by weight.Type: GrantFiled: June 25, 1996Date of Patent: September 1, 1998Assignees: Nippon Oil Co., Ltd, Petroleum Energy CenterInventors: Takashi Ino, Tadashi Seike
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Patent number: 5788724Abstract: Process for the conversion of a hydrocarbon material having a high molecular weight, in particular petroleum residues or heavy crude oils or reduced crude oils, comprising the following steps:impregnating or mixing the hydrocarbon material with a catalyst;pyrolyzing the impregnated residue in a suitable zone at a temperature of between 450.degree. and 650.degree. C.Type: GrantFiled: May 7, 1996Date of Patent: August 4, 1998Assignee: Eniricerche S.p.A.Inventors: Angelo Carugati, Lorenzo Ippolito De Vita, Paolo Pollesel
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Patent number: 5656044Abstract: A process and apparatus for gasification of organic materials (typically incorporated in domestic and industrial wastes, including auto shredder residues) to produce useful synthesis gas (with a major content CO and H.sub.2) with effectively non-toxic ash residue by means of at least one continuously operated burner, preferably stoichiometrically balanced (1:2 for natural gas/oxygen) at least at startup and shut down (optionally with some excess of oxygen, usually under steady-state conditions, such as at a ratio of 1:4 or higher, especially if the charge has well over 18% water content), directed into a primary single stage reaction zone (through an opening in common with the effluent product gas discharged therefrom such as to assure intimate contact therebetween), which zone contains a tumbling charge in a rotating barrel-shaped horizontal reactor thus heated to from about 650.degree. to about 800.degree. C.Type: GrantFiled: June 7, 1995Date of Patent: August 12, 1997Assignees: Hylsa S.A. de C.V., Proler Environmental Services, Inc.Inventors: Norman G. Bishop, Ricardo Viramontes-Brown
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Patent number: 5580362Abstract: The invention relates to a process and an apparatus for gasifying liquid and/or fine-grain solid gasification substances and/or for reforming a gas, using a gasification agent, in a reactor (1). In the process the process heat is supplied by heat carrier particles which are heated within a substantially closed circuit in a heater (5) by combustion gases which are produced in a combustion chamber (3), and passed through the reactor (1) in counter-flow relationship with the gasification substance or the gas to be reformed and the gasification agent, and then returned to the heater (5) for renewed heating. In accordance with the invention the particles and the combustion gas form a fluidized bed above at least one grid (34, 34a, 34b, 34c, 34d, 34e) arranged in the heater (5).Type: GrantFiled: January 12, 1995Date of Patent: December 3, 1996Assignee: Kortec AGInventors: Mircea T. Manulescu, Jean-Paul Vandenhoeck
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Patent number: 5383944Abstract: A method for gasifying a combustible liquid or powder using a gas detonation wave including a step of introducing detonable mixed gas including oxidizing gas into a detonation tube, a step of spraying, coating or laying combustible liquid or powder in the detonation tube and a step of detonating the mixed gas by ignition so that the combustible liquid or powder is thermally decomposed by the high-temperature and high-pressure behind the detonation wave.Type: GrantFiled: August 4, 1993Date of Patent: January 24, 1995Assignees: Koatsu Gas Koygo Co., Ltd., Hidenori MatsuiInventor: Hidenori Matsui
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Patent number: 4854944Abstract: A method for treating carbonaceous material, e.g. waste oil containing PCB toxic materials, by effecting the pyrolytic gasification thereof to produce a relatively high BTU content gas that is substantially free of the toxic materials to supplement or substitute for natural gas. This is attained by a furnace in which the products of combustion are utilized to separately generate steam and to preheat a supply of carbonaceous material which may be mixed with water. The generated steam is mixed with the preheated carbonaceous material and passed through a premixing and/or a primary dynamic mixer wherein the preheated carbonaceous material and steam mixture is further heated to a temperature ranging between 1600.degree.-1800.degree. F. to effect a partial gasification of the carbonaceous material. The partially gasified material is thereafter directed through one or more secondary dynamic mixing chambers to be further heated in the presence of additional steam to complete the gasification thereof.Type: GrantFiled: June 6, 1988Date of Patent: August 8, 1989Inventor: William H. Strong
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Patent number: 4529409Abstract: The invention concerns a process for the preparation of a combustible gaseous mixture or product gas from a nongaseous fuel in which a gasifier is used provided with a rotatably driven cup-shaped support grate 3. A granular or pulverized refractory auxiliary material and fuel are continuously fed to the inner side of said grate, a gasification medium or process gas being fed to the outer side of the grate, whereupon the resulting product gas and the exhausted auxiliary material with ash from the fuel, are discharged separately. According to the invention the fuel consists, at least partly, of a residual oil previously fed into the fuel chamber 14, 15.Type: GrantFiled: November 14, 1983Date of Patent: July 16, 1985Assignee: Thomassen International B.V.Inventor: Aloysius J. W. O. Alink
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Patent number: 4525176Abstract: The refractory lined reaction zone of a free flow vertical gas generator for the production of raw synthesis gas, reducing gas, or fuel gas by the partial oxidation of an ash-containing solid carbonaceous fuel or a high-metal-containing liquid hydrocarbonaceous fuel is preheated and deslagged by first heating the slag and ash layer on the surface of the refractory lining to a temperature in the range of about 1800.degree.-2000.degree. F. by means of an annular-type elongated burner whose downstream tip is located near the upstream roof of the reaction zone. The tip of the burner is then lowered along the central longitudinal axis of the reaction chamber to above the bottom central outlet passage of the reaction chamber, and the slag and ash layer is heated to their melting point, or above. The molten slag at the bottom of the reaction chamber and the flue gas pass out through the bottom central outlet.Type: GrantFiled: August 29, 1983Date of Patent: June 25, 1985Assignee: Texaco Inc.Inventors: Wolfgang Koog, Lawrence E. Estabrook
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Patent number: 4515604Abstract: In a process of producing a synthesis gas which has a low inert gas content and is intended for the synthesis of alcohols, particularly of methanol, and of hydrocarbons, and which is produced from coal or heavy hydrocarbons, by a gasification under pressure with oxygen and steam, whereafter the raw gas is cooled, the impurities are removed by a scrubbing with methanol, and the methanol is removed by means of molecular sieves from the cold pure gas. The pure gas is then cooled further and partly liquefied, the remaining gas is further cooled by a pressure relief and methane is distilled from the liquid part with simultaneous recovery of the synthesis gas, which consists of hydrogen and carbon monoxide and has a low methane content. All or part of the methane is compressed and is subsequently reacted with steam and oxygen to produce carbon monoxide and hydrogen. The produced gas is admixed to the synthesis gas or to the partly purified raw gas.Type: GrantFiled: April 25, 1983Date of Patent: May 7, 1985Assignee: Metallgesellschaft AktiengesellschaftInventors: Karl-Heinz Eisenlohr, Hans Gaensslen, Manfred Kriebel, Heiner Tanz
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Patent number: 4473464Abstract: In a method for producing a distillable hydrocarbonaceous stream and carbonaceous agglomerates from a heavy crude oil by charging the crude oil and finely divided carbonaceous solids to a rotary kiln with the crude oil and carbonaceous solids being charged in a weight ratio from about 0.6 to about 1.5; tumbling the crude oil and finely divided carbonaceous solids in the rotary kiln at a temperature from about 850.degree. to about 1000.degree. F.Type: GrantFiled: May 7, 1980Date of Patent: September 25, 1984Assignee: Conoco Inc.Inventors: Lyndon D. Boyer, Matthew C. Sooter, Francis E. Sage
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Patent number: 4430095Abstract: Liquid fuel, such as gasoline, is converted into gaseous form in an enclosed chamber rotating at high speed (e.g., 10,000 rpm) and containing a catalyst support material impregnated with 90% cupric chloride and 10% nickel chloride by weight. The converted fuel passes through a microporous (e.g., 40 microns) peripheral wall of the container and then mixes uniformly with air flowing through an annular space surrounding the container to form a combustible mixture.Type: GrantFiled: April 14, 1982Date of Patent: February 7, 1984Inventor: Jack J. Gilbert
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Patent number: 4401440Abstract: The invention concerns a method and an installation for preparing a combustible gas mixture from solid or liquid fuels by means of a rotatable cup-shaped, perforated bowl forming a supporting grate with a fuel supply to its inner wall and a feed of gasifying fluid to the outer side of the grate, an intermediate layer of a refractory material being formed against the inner wall of the rotating grate for supporting the fuel and finally dividing the gasifying fluid.Type: GrantFiled: February 24, 1982Date of Patent: August 30, 1983Assignee: Thomassen Holland B. V.Inventor: Aloysius J. W. O. Alink
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Patent number: 4314900Abstract: A method for producing a distillable hydrocarbonaceous stream and carbonaceous agglomerates from a heavy crude oil by charging the crude oil and finely divided carbonaceous solids to a rotary kiln with the crude oil and carbonaceous solids being charged in a weight ratio from about 0.6 to about 1.5; tumbling the crude oil and finely divided carbonaceous solids in the rotary kiln at a temperature from about 850.degree. to about 1000.degree. F. for up to about 30 minutes to produce a vaporous stream and agglomerate particles containing a residual portion of the crude oil and finely divided carbonaceous solids; separating the agglomerate particles into a product portion of a desired particle size range and a recycle portion; grinding the recycle portion to produce the finely divided carbonaceous solids and heating the finely divided carbonaceous solids prior to recycling the carbonaceous solids to mixture with the crude oil.Type: GrantFiled: May 7, 1980Date of Patent: February 9, 1982Assignee: Conoco Inc.Inventors: Frank W. Theodore, George E. Wasson
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Patent number: 4233137Abstract: A method for recovering sensible heat from a thermally decomposed high temperature hydrocarbon gas product in the form of high pressure steam of from 40 to 100 kg/cm.sup.2 has been discovered. This method comprises pre-cooling at first the thermally decomposed gas product of high temperature by mixing said gas product with sprayed low temperature hydrocarbon oil as a quenching oil to a temperature of about 300.degree. to 400.degree. C.; and then passing the mixture through the tubes of a shell-and-tube type heat exchanger so as to transfer the heat of said resulting mixture into a high pressure water flowing through the space of the shell side thereof to recover a high pressure steam, followed by separating the condensed hydrocarbon oil from the mixture to reuse said oil by recirculation.Type: GrantFiled: March 30, 1979Date of Patent: November 11, 1980Assignees: Chiyoda Chemical Engineering & Construction Co., Ltd., Kureha Kagaku Kogyo Kabushiki KaishaInventors: Kiyoji Ozaki, Akinobu Fukuhara, Takuji Hosoi, Yasuo Sagi
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Patent number: 4073630Abstract: In a system wherein carbon monoxide is produced from a carbon source by contacting the carbon source with solid zinc oxide in a primary reaction zone, zinc values which are entrained in the ash byproduct are recovered, reconverted to zinc oxide and reused for production of additional carbon monoxide in a secondary reaction zone wherefrom the zinc is recovered, reconverted to zinc oxide and thereafter reused in the primary reaction zone.Type: GrantFiled: October 26, 1976Date of Patent: February 14, 1978Assignee: Phillips Petroleum CompanyInventor: Merritt V. DeLano, Jr.
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Patent number: 4066738Abstract: A process for producing a fuel gas and sulfur from a hydrocarbon fuel wherein a fuel oil containing sulfur is at least partially combusted in a fluidized bed of sorbent material which produces a substantially sulfur free fuel gas and a sulfided sorbent. The sulfided sorbent is passed to a second fluidized bed which regenerates the sulfided sorbent and produces a sulfur dioxide containing gas. The latter gas is contacted with granular coal in the presence of steam to reduce the sulfur dioxide to elemental sulfur.Type: GrantFiled: November 19, 1976Date of Patent: January 3, 1978Assignee: Foster Wheeler Energy CorporationInventor: Ernest L. Daman
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Patent number: 4025318Abstract: Hydrocarbon feedstock is first vaporized in the presence of hydrogen and then the vaporized hydrocarbon feedstock together with excess hydrogen, is gasified to form an effluent gas consisting essentially of methane and aromatic hydrocarbons together with hydrogen and minor amounts of hydrogen sulfide. The process is suitable for the production of a pipeline gas having a heating value of approximately 1,000 BTU/SCF by further processing the effluent, after separation of the aromatic fraction and hydrogen sulfide from the gasifier effluent; the effluent is subject to cryogenic separation of the hydrogen with the hydrogen being recycled to the gasification step and the methane being discharged into a product pipeline. The overall process contemplates revaporization of the aromatic fraction separated from the effluent and regasification to extinction of this fraction.Type: GrantFiled: October 5, 1976Date of Patent: May 24, 1977Assignee: Air Products and Chemicals, Inc.Inventors: Burton E. Moody, John E. Schuster
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Patent number: 4010008Abstract: A multiple-stage hydrocarbon steam reforming process for producing a methane-rich substitute natural gas. A portion of the first stage efluent is condensed, water is removed therefrom and the remainder is recycled to combine with the fresh charge stock to the first stage. Following one stage of methanation, or shift conversion, both steam and carbon dioxide are removed prior to effecting additional reactions in a second methanation stage.Type: GrantFiled: March 1, 1976Date of Patent: March 1, 1977Assignee: UOP Inc.Inventor: Hong-Kyu Jo
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Patent number: 3993457Abstract: Methanol and synthetic natural gas are produced concurrently by introducing a carbonaceous material into a gasification zone, and thereafter, passing sequentially the synthesis gas thus formed through a water gas shift conversion zone, a sulfur compound and carbon dioxide removal zone, a methanol synthesis zone and a methanation zone.Type: GrantFiled: November 26, 1975Date of Patent: November 23, 1976Assignee: Exxon Research and Engineering CompanyInventors: Robert P. Cahn, John P. Longwell, Stephen L. Wythe
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Patent number: 3962411Abstract: Catalytic cracking of gaseous or distillate hydrocarbon fuels for the production of hydrogen (such as for use in a fuel cell) is provided in a push/pull operated dual chamber blow and run apparatus utilizing a catalytic bed employing ring catalyzed nickel supported on porous ceramic substrates, having a graduated catalyst content such that there is a low catalyst content in the portion of the bed near the inlet and a high catalyst content in the portion of the bed near the outlet.Type: GrantFiled: May 2, 1975Date of Patent: June 8, 1976Assignee: United Technologies CorporationInventors: Herbert J. Setzer, Warren R. Standley