Metal Or Metal Oxide Catalyst Patents (Class 208/112)
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Publication number: 20030127359Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.Type: ApplicationFiled: December 2, 2002Publication date: July 10, 2003Inventors: Takahiko Takewaki, Mark E. Davis
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Patent number: 6576120Abstract: The invention relates to a process for the catalytic dewaxing of a hydrocarbon feed containing waxy molecules by contacting the hydrocarbon feed under catalytic dewaxing conditions with a catalyst composition having metallosilicate crystallites, a binder and a hydrogenation component, wherein the weight ratio of the metallosilicate crystallites and the binder is between 5:95 and 35:65. The invention also relates to a catalyst composition having at least a low acidity refractory oxide binder, which binder is essentially free of aluminum, metallosilicate crystallites and a hydrogenation component, wherein the weight ratio of the metallosilicate crystallites and the binder is between 5:95 and 35:65.Type: GrantFiled: May 16, 2001Date of Patent: June 10, 2003Assignee: Shell Oil CompanyInventors: Carolus Maria Van Ballegoy, Edward Julius Creyghton, Jean-Paul Darnanville, Eric Duprey, Laurent Georges Huve, Carolus Matthias Anna Maria Mesters, Thomas Joris Remans, Maria Barbara Hendrica Crijnen-Van Beers
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Patent number: 6572761Abstract: A process of oxidizing an ash and sulfur containing fuel such as coal in order to power gas turbines using a material such as the oxides of iron which in an oxidized state can be readily reduced and which in a reduced state is readily oxidized. Preferably, the oxides of iron are circulated between two fluid bed reactors and reduced by the ash and sulfur containing fuel in the first said fluid bed reactor and oxidized by air in the second said fluid bed reactor, with ash and SO2 in the gases leaving chiefly from the first said fluid bed reactor. The temperature is controlled within the second said fluid bed reactor by use of a clean fuel and the rate of addition of the ash and sulfur containing fuel to the second fluid bed is controlled so as to limit the amount of SO2 in the gases leaving the second said fluid bed.Type: GrantFiled: July 31, 2001Date of Patent: June 3, 2003Assignee: General Electric CompanyInventor: Richard K. Lyon
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Publication number: 20030024853Abstract: A process of oxidizing an ash and sulfur containing fuel such as coal in order to power gas turbines using a material such as the oxides of iron which in an oxidized state can be readily reduced and which in a reduced state is readily oxidized. Preferably, the oxides of iron are circulated between two fluid bed reactors and reduced by the ash and sulfur containing fuel in the first said fluid bed reactor and oxidized by air in the second said fluid bed reactor, with ash and SO2 in the gases leaving chiefly from the first said fluid bed reactor. The temperature is controlled within the second said fluid bed reactor by use of a clean fuel and the rate of addition of the ash and sulfur containing fuel to the second fluid bed is controlled so as to limit the amount of SO2 in the gases leaving the second said fluid bed.Type: ApplicationFiled: July 31, 2001Publication date: February 6, 2003Inventor: Richard K. Lyon
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Publication number: 20030019789Abstract: The present invention relates to a method and system for the continuous preparation of gasoline, kerosene, and diesel oil from waste plastics. The method comprises the steps of: subjecting a melt of the waste plastics to a first catalytic reaction in which the waste plastic melt is in contact with a nickel or nickel alloy catalyst to be dehydrogenated while being decomposed; subjecting the dehydrogenated and decomposed waste plastic melt to a fluid catalytic cracking, as a second catalytic reaction to produce a gasoline-based fraction at a high fraction; fractionating the cracked material into a gasoline-based fraction, a kerosene fraction, and a diesel oil fraction; and reforming the gasoline-based fraction to produce a high octane number gasoline. The present invention can apply to a small scale facility, not to apply to a large scale facility.Type: ApplicationFiled: September 13, 2002Publication date: January 30, 2003Inventor: Ho-Jun Kwak
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Patent number: 6387248Abstract: A catalyst characterized by its ability to hydrotreat a charge hydrocarbon feed containing components boiling above 1000° F., and sediment-formers, sulfur, metals, asphaltenes, carbon residue, and nitrogen is prepared by mulling a porous alumina support with a salt of a Group VIII metal oxide and with a salt of a Group VI-B metal oxide in the presence of an acid to provide a mixture, by extruding the mixture to form an extrudate, by drying the extrudate and by subjecting the dried extrudate to hydrothermal calcination to provide the catalyst.Type: GrantFiled: November 6, 1997Date of Patent: May 14, 2002Assignee: Texaco Inc.Inventors: David Edward Sherwood, Jr., Pei-Shing Eugene Dai
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Patent number: 6379535Abstract: A catalytic hydrocracking process wherein a hydrocarbonaceous feedstock and a liquid recycle stream is contacted with hydrogen in a hydrocracking reaction zone at elevated temperature and pressure to obtain conversion to lower boiling hydrocarbons. A liquid hydrocarbonaceous stream produced from the effluent of the hydrocracking reaction zone is fractionated in a first zone of a divided-wall fractionation zone to produce at least one liquid hydrocarbonaceous product stream and a liquid hydrocarbonaceous stream containing hydrocarbons boiling at a temperature in the boiling range of the feedstock and heavy polynuclear aromatic compounds. At least a portion of the liquid hydrocarbonaceous stream containing heavy polynuclear aromatic compounds is introduced into a second zone of the divided-wall fractionation zone to produce a stream rich in polynuclear aromatic compounds.Type: GrantFiled: April 25, 2000Date of Patent: April 30, 2002Assignee: UOP LLCInventors: Richard K. Hoehn, Bradford L. Bjorklund
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Patent number: 6355159Abstract: A heavy hydrocarbon is rendered pipelineable by hydroconverting the heavy hydrocarbon under conditions sufficient to obtain a product oil of lowered viscosity and an API gravity suitable for pipelining and thereafter adding a diluent modified hydrocarbon to the product oil in an amount sufficient to stabilize the product oil against asphaltene phase separation and when phase separated asphaltene is present to dissolve the phase separated asphaltenes.Type: GrantFiled: August 4, 2000Date of Patent: March 12, 2002Assignee: ExxonMobil Research and Engineering CompanyInventors: Ronald Damian Myers, Mainak Ghosh, Michelle A. Young, Tapan Chakrabarty, Bruce M. Sankey, Irwin Andrew Wiehe
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Publication number: 20020000397Abstract: A catalyst characterized by its ability to hydrotreat a charge hydrocarbon feed containing components boiling above 1000° F., and sediment-formers, sulfur, metals, asphaltenes, carbon residue, and nitrogen is prepared by mulling a porous alumina support with a salt of a Group VIII metal oxide and with a salt of a Group VI-B metal oxide in the presence of an acid to provide a mixture, by extruding the mixture to form an extrudate, by drying the extrudate and by subjecting the dried extrudate to hydrothermal calcination to provide the catalyst.Type: ApplicationFiled: November 6, 1997Publication date: January 3, 2002Inventors: DAVID EDWARD SHERWOOD JR., PEI-SHING EUGENE DAI
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Patent number: 6334947Abstract: The invention pertains to a catalyst at least comprising a hydrogenation metal component and a swelling synthetic clay consisting of elemental clay platelets, with the average diameter of the clay platelets not exceeding 1 micron and the average degree of stacking of the clay platelets not exceeding 20 platelets per stack. The catalyst is especially suitable for the hydroprocessing of hydrocarbon feeds, the term “hydroprocessing” encompassing all processes in which a hydrocarbon feed is treated with hydrogen. The clays which are suitable for use in the catalyst according to the invention may be prepared as described in Netherlands patent application No. 9401433.Type: GrantFiled: May 6, 1997Date of Patent: January 1, 2002Assignee: Akzo Nobel NVInventors: Mark De Boer, Eelco Titus Carel Vogt, Robertus Gerardus Leliveld, John Wilhelm Geus, Roland Jacobus Martinus Josephus Vogels
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Patent number: 6309537Abstract: The present invention concerns the use of a catalyst comprising an extruded essentially alumina-based support, constituted by a plurality of juxtaposed agglomerates and partially in the form of packs of flakes and partially in the form of needles, and optionally comprising at least one catalytic metal or a compound of a catalytic metal from group VIB and/or at least one catalytic metal or compound of a catalytic metal from group VIII, further comprising at least one dopant selected from the group formed by boron, phosphorous, silicon (or a silica different from that which can be found in the support) and halogens, in an ebullating bed process and for hydrorefining and hydroconverting hydrocarbon feeds.Type: GrantFiled: December 9, 1999Date of Patent: October 30, 2001Assignee: Institut Francais du PetroleInventors: Virginie Harle, Slavik Kasztelan, Stéphane Kressmann, Frédéric Morel
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Patent number: 6275776Abstract: A method to rapidly characterize the hydrocarbon chemistry of heavy residual petroleum mixtures uses three model equations for predicting aromatic carbon content, aromatic hydrogen content and total hydrogen content of the heavy residual oil. The predictive equations are based on three easily measured bulk properties including refractive index, specific gravity and the Watson K factor.Type: GrantFiled: March 3, 1999Date of Patent: August 14, 2001Assignee: Phillips Petroleum CompanyInventors: Paul F. Meier, Dhananjay B. Ghonasgi, Michael Wardinsky
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Patent number: 6224748Abstract: A process for hydrocracking heavy, high aromatic content feeds, such as cycle oil, using a catalyst composition containing a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component including a Group IVB metal oxide modified with an oxyanion of a Group VIB metal.Type: GrantFiled: December 20, 1993Date of Patent: May 1, 2001Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Scott Han, Daniel J. Martenak, Jose G. Santiesteban, Dennis E. Walsh
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Patent number: 6217747Abstract: A process for hydrocracking heavy hydrocarbon feeds using a catalyst composition containing a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component including a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. The hydrocracking product has high isoparaffin to normal paraffin ratios and with minimal ethane and methane byproducts at high conversions. The hydrocracking step is useful in processes for producing high quality lubricating oil basestocks, along with naphtha and distillate products.Type: GrantFiled: November 12, 1993Date of Patent: April 17, 2001Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Scott Han, Daniel J. Martenak, Jose G. Santiesteban, Dennis E. Walsh
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Patent number: 6187708Abstract: The invention relates to a process for the sulfurization of hydroconversion catalysts, whereby said catalyst contains at least one element of group VIII of the periodic table and optionally an element of group VI, whereby said metal is present in the oxide state. Said process comprises at least one stage that is carried out in a hydrotreatment zone in the presence of at least one thionic compound and at least one nitrogenous compound. This process is carried out in such a way that before the final sulfurization temperature is reached, at least 130% of the stoichiometric amount of sulfur that is necessary for complete sulfurization of the catalyst is injected in said catalyst.Type: GrantFiled: May 5, 1999Date of Patent: February 13, 2001Assignee: Institut Francais du PetroleInventors: Samuel Mignard, Virginie Harle, Slavik Kasztelan, Nathalie Marchal-George
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Patent number: 6184430Abstract: A method of cracking a feedstock by contacting the feedstock with a metal-promoted anion-modified metal oxide catalyst in the presence of hydrogen gas. The metal oxide of the catalyst is one or more of ZrO2, HfO2, TiO2 and SnO2, and the feedstock is principally chains of at least 20 carbon atoms. The metal-promoted anion-modified metal oxide catalyst contains one or more of Pt, Ni, Pd, Rh, Ir, Ru, (Mn & Fe) or mixtures of them present between about 0.2% to about 15% by weight of the catalyst. The metal-promoted anion-modified metal oxide catalyst contains one or more of SO4, WO3, or mixtures of them present between about 0.5% to about 20% by weight of the catalyst.Type: GrantFiled: December 5, 1996Date of Patent: February 6, 2001Assignee: The United States of America as represented by the United States Department of EnergyInventors: Koppampatti R. Venkatesh, Jianli Hu, John W. Tierney, Irving Wender
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Patent number: 6139723Abstract: A highly dispersed iron-based ionic liquid or liquid-gel catalyst which may be anion-modified and metals-promoted has high catalytic activity, and is useful for hydrocracking/hydrogenation reactions for carbonaceous feed materials. The catalyst is produced by aqueous precipitation from saturated iron salt solutions such as ferric sulfate and ferric alum, and may be modified during preparation with anionic sulfate (SO.sub.4.sup.2-) and promoted with small percentages of at least one active metal such as cobalt, molybdenum, palladium, platinum, nickel, or tungsten or mixtures thereof. The resulting catalyst may be used in a preferred ionic liquid form or in a liquid-gel form, and either fluidic form can be easily mixed and reacted with carbonaceous feed materials such as coal, heavy petroleum fractions, mixed plastic waste, or mixtures thereof.Type: GrantFiled: January 28, 1999Date of Patent: October 31, 2000Assignee: Hydrocarbon Technologies, Inc.Inventors: Bruce P. Pelrine, Alfred G. Comolli, Lap-Keung Lee
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Patent number: 6136179Abstract: This invention relates to a process of catalytic hydroconversion of a heavy hydrocarbon oil containing a substantial portion of components having an atmospheric boiling point above 565.degree. C. to give a product hydrocarbon oil containing components having a boiling point below about 565.degree. C. The process includes steps of mixing a heavy hydrocarbon oil with an oil soluble molybdenum compound, introducing the resulting mixture into a hydroconversion zone, introducing a reactor feed gas into the hydroconversion zone, and recovering the product hydrocarbon oil from the hydroconversion zone.Type: GrantFiled: June 19, 1998Date of Patent: October 24, 2000Assignee: Texaco Inc.Inventors: David Edward Sherwood, Jr., Michael Kevin Porter
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Patent number: 6133186Abstract: The present invention provides a process for the preparation of a catalyst composition which comprises, as first cracking component, a zeolite beta with a silica to alumina molar ratio of at least 20 comprising crystals less than 100 nm in size, and a second cracking component selected from (i) crystalline molecular sieves having pores with diameters greater than 0.6 nm, and (ii) clays, the process comprising the steps of:(i) preparing a mixture comprising the first cracking component and the second cracking component, the first cracking component being in the form of a sol,(ii) extruding the mixture into catalyst extrudates, and(iii) calcining the extrudates.Type: GrantFiled: February 25, 1998Date of Patent: October 17, 2000Assignee: Shell Oil CompanyInventors: Johan Willem Gosselink, Johannes Anthonius Robert Van Veen
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Patent number: 6132597Abstract: The present invention relates to the use of a catalyst comprising an extruded essentially alumina-based support, constituted by a plurality of juxtaposed agglomerates and partially in the form of packs of flakes and partially in the form of needles, and optionally comprising at least one catalytic metal or a compound of a catalytic metal from group VIB, and/or optionally at least one catalytic metal or compound of a catalytic metal from group VIII, in an ebullating bed process and for hydrorefining and hydroconverting hydrocarbon feeds.Type: GrantFiled: June 10, 1998Date of Patent: October 17, 2000Assignee: Institut Francais du PetroleInventors: Virginie Harle, Slavik Kazstelan, Frederic Morel, Stephane Kressmann, Philippe Courty
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Patent number: 6103099Abstract: A lubricating base stock useful for forming lubricants such as a multigrade automotive oils, automatic transmission oils, greases and the like is prepared by hydroisomerizing a waxy hydrocarbon feed fraction having an initial boiling point in the 650-750.degree. F. range and an end point of at least 1050.degree. F., synthesized by a slurry Fischer-Tropsch hydrocarbon synthesis process. The hydroisomerization forms a hydroisomerate containing the desired base stock which is recovered, without dewaxing the hydroisomerate. The hydroisomerization is conducted at conditions effective to convert at least 67 wt. % of the 650-750.degree. F.+ waxy feed hydrocarbons to lower boiling hydrocarbons. When combined with a standard lubricant additive package, these base stocks have been formed into multigrade automotive crankcase oils, transmission oils and hydraulic oils meeting the specifications for these oils.Type: GrantFiled: September 4, 1998Date of Patent: August 15, 2000Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel F. Ryan, Douglas R. Boate
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Patent number: 6096192Abstract: A bitumen is rendered pipelineable by partially hydroconverting the bitumen and then adding sufficient diluent to the partially hydroconverted bitumen to provide a mixture having an API gravity at 15.degree. C. of at least 19.degree. and a viscosity at 40.degree. C. in the range of about 35 to about 60 cP.Type: GrantFiled: July 14, 1998Date of Patent: August 1, 2000Assignee: Exxon Research and Engineering Co.Inventors: Ronald Damian Myers, John Brenton MacLeod, Mainak Ghosh, Tapan Chakrabarty
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Patent number: 6086749Abstract: A method and catalyst mixture for hydroprocessing a hydrocarbon feed stream through a moving catalyst bed having a catalyst mixture and contained within a single onstream reactor vessel. The reactor vessel contains the catalyst mixture which includes two or more different and distinct catalyst for any hydroprocessing application. The different and distinct catalyst have different catalyst density and are designed for a different function, such as HDM and HDN. The different and distinct catalysts can also have different average residence times if their densities and physical properties are properly selected.Type: GrantFiled: December 19, 1997Date of Patent: July 11, 2000Assignee: Chevron U.S.A. Inc.Inventors: David C. Kramer, Bruce E. Stangeland
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Patent number: 6077419Abstract: Pillared clays composited with Group VIII metals or Group VI metals may be used for the hydroconversion with excellent activity maintenance, of Fischer Tropsch waxes, boiling above about 700.degree. F.Type: GrantFiled: September 6, 1997Date of Patent: June 20, 2000Assignee: Exxon Research and Engineering CompanyInventors: Robert J. Wittenbrink, Jack W. Johnson
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Patent number: 6071402Abstract: The present invention concerns a hydrorefining and/or hydrocracking catalyst for hydrocarbon feeds, comprising at least one mixed sulphide comprising sulphur, at least one group VB element, preferably niobium, and at least one group VIB element, preferably molybdenum or tungsten, more preferably molybdenum, optionally combined with a support and/or at least one group VIIA metal and/or at least one group VIII metal and/or an element selected from the group formed by S, P, B, Si.Type: GrantFiled: December 29, 1997Date of Patent: June 6, 2000Assignee: Institut Francais du PetroleInventors: Michel Danot, Nabil Allali, Valerie Gaborit, Christophe Geantet, Pavel Afanassiev, Samuel Mignard, Slavik Kasztelan
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Patent number: 6068758Abstract: The catalyst comprises a mixture of hydrocracked residual asphaltene and metal-doped coke. The catalyst is produced by mixing an oil-soluble metal compound catalyst precursor (e.g. Mo or Ni soap) with heavy oil containing asphaltene and hydrocracking the mixture, producing solid coke as a byproduct. The residual asphaltene fraction in the hydrocracked oil is then precipitated, for example with n-pentane. The mixture of solid coke and precipitated asphaltene is separated and used as the catalyst for hydrocracking a new batch of non-hydrocracked oil. The coke and asphaltene mixture provides as effective a catalyst as the original metal soap catalyst precursor. The coke and asphaltene mixture recovered from a second stage of coke and asphaltene mixture catalysed hydrocracking of heavy oil is still an effective catalyst and can be used again without significant loss in catalytic activity.Type: GrantFiled: June 12, 1997Date of Patent: May 30, 2000Inventor: Otto P. Strausz
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Patent number: 6015485Abstract: Provided are high activity catalysts based upon gamma alumina containing substrates impregnated with one or more catalytically active metals, which catalysts in addition contain a nanocrystalline phase of alumina of a crystallite size at the surface of less than 25 .ANG.. Also provided are processes for preparing such high activity catalysts and various uses thereof.Type: GrantFiled: September 25, 1995Date of Patent: January 18, 2000Assignee: Cytec Technology CorporationInventors: Peter Joseph Shukis, James Donald Carruthers, Vincent Joseph Lostaglio
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Patent number: 5993643Abstract: There is provided a hydrocracking process using a catalyst comprising a hydrogenation/dehydrogenation component, such as a noble metal, and an acidic solid component comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this catalyst is zirconia, modified with tungstate and platinum. This catalyst is used to selectively hydrocrack naphtha range hydrocarbons to reduce the endpoint of reformulated gasolines.Type: GrantFiled: November 12, 1993Date of Patent: November 30, 1999Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Scott Han, Roger A. Morrison, Jose G. Santiesteban
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Patent number: 5977425Abstract: It has been discovered that waxy feeds can be upgraded using a catalyst made by combining powdered dewaxing catalyst with powdered isomerization catalyst said mixture of powdered catalysts being formed into a discrete particle.Type: GrantFiled: February 13, 1998Date of Patent: November 2, 1999Assignee: Exxon Research and Engineering CoInventors: Dee A. Brandes, David N. Zinkie, Sandra Jane Alward, William J. Murphy, Ian A. Cody, Thomas J. Ford
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Patent number: 5972203Abstract: There is provided catalysts and conversion processes for converting hydrocarbons using the catalysts. The catalysts comprises a first alumino-phosphospho-molecular sieves and a binder comprising a second alumino-phopho-molecular sieves. Exemplary conversion processes include the conversion of oxygenates to olefins, dewaxing, reforming, dealkylation, dehydrogenation, transalkylation, alkylation, and isomerization.Type: GrantFiled: May 29, 1997Date of Patent: October 26, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Robert Scott Smith, Gary D. Mohr
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Patent number: 5968348Abstract: A process for converting a charge of heavy hydrocarbons containing components boiling above 1000.degree. F. to a product containing a decreased content of components boiling above 1000.degree. F. and decreased sediment content employing a NiMo catalyst having a specified pore distribution under hydroconversion conditions is disclosed. The process includes contacting the charge of heavy hydrocarbon with hydrogen in the presence of a heterogeneous catalyst supported on alumina and containing .ltoreq.2.5 wt % of silica and bearing 2.2 to 6 wt % of a Group VIII metal oxide, 7 to 24 wt % of a Group VIB metal oxide and 0.3 to 2 wt % of a loaded phosphorus oxide, the phosphorous being loaded onto the catalyst as aqueous phosphoric acid. The catalyst also may be characterized by having a Total Surface Area of 175 to 205 m.sup.2 /g, a Total Pore Volume of 0.82 to 0.98 cc/g, and a Pore Diameter Distribution wherein 29.6 to 33.0% of the Total Pore Volume is present as macropores of diameter greater than 250 .ANG., 67.Type: GrantFiled: August 24, 1995Date of Patent: October 19, 1999Assignee: Texaco Inc.Inventor: David Edward Sherwood, Jr.
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Patent number: 5954945Abstract: A method for converting a hydrocarbonaceous feedstock to a lower boiling temperature product is described which comprises suspending metal sulfide particles and oxide particles in a reaction zone including hydrogen and the hydrocarbonaceous feedstock at hydrocracking conditions. The metal sulfide particles and the oxide particles are introduced into the reaction zone through particle precursor fluids which precipitate upon heating to form the particles. The metal sulfide particles contain sulfidable transition metals. The oxide particles contain oxidisable elements such as magnesium, aluminum, silicon, phosphorous, calcium, scandium, titanium, gallium, germanium, zirconium, cerium, and mixtures thereof and are not hydrogenation catalysts under the reactor conditions. The oxide particles resist being chemically reduced by reducing agents in the reaction zone. Surprisingly, the presence of the oxide particles is associated with a significant reduction of coke production in the reaction zone.Type: GrantFiled: March 27, 1997Date of Patent: September 21, 1999Assignee: BP Amoco CorporationInventors: Roger H. Cayton, Ronald B. Fisher, Jeffrey T. Miller, John A. Waynick
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Patent number: 5951849Abstract: A method for converting a hydrocarbonaceous feedstock to a lower boiling product is described which comprises suspending metal-impregnated carbonaceous particles in a reaction zone including hydrogen and the hydrocarbonaceous feedstock at hydrocracking conditions. The metal impregnated on the particles may be sulfided in the reaction zone. The impregnated particles are shown to be surprisingly selective catalysts, and anomalous ranges of particle size and concentration are identified. Methods for preparing the particles are additionally presented.Type: GrantFiled: December 5, 1996Date of Patent: September 14, 1999Assignee: BP Amoco CorporationInventors: Jeffrey T. Miller, Ronald B. Fisher, Tracy L. Marshbanks
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Patent number: 5935419Abstract: A process for the upgrading a heavy oil to a lighter oil having a higher API gravity than the heavy oil is disclosed. The process includes reacting an emulsion of the heavy oil with water in the presence of a catalyst and a hydrogen containing gas to give a reaction product from which the light oil is recovered. The process may also include the gasification of the heavy oil residue and the hydrocarbon containing water portions of the above reaction product for use in the upgrading process. The catalyst is preferably soluble in either oil or water portion of the emulsion and includes a transition metal containing compound, the metal being selected from Group V, Group VI, Group VIII of the Periodic Table or mixtures of these metals.Type: GrantFiled: September 15, 1997Date of Patent: August 10, 1999Assignee: Texaco Inc.Inventors: Motasimur Rashid Khan, Steven Jude DeCanio
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Patent number: 5925235Abstract: A layered hydrocracking catalyst system has high middle distillate selectivity when used for hydrocracking a high sulfur and high nitrogen containing feedstock. The layered system comprises a first layer catalyst with contains a zeolite having a unit cell size of greater than about 24.35 Angstroms, and a second layer catalyst which contains a zeolite having a unit cell size of less than about 24.30 Angstroms. The layered system is particularly beneficial in terms of catalyst life and product selectivity for reactors operated under conditions of a high temperature profile.Type: GrantFiled: October 23, 1998Date of Patent: July 20, 1999Assignee: Chevron U.S.A. Inc.Inventor: Mohammad M. Habib
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Patent number: 5922190Abstract: A process for suppressing foam formation in a bubble column reactor includes the steps of feeding a liquid and a gas to a reactor at a liquid velocity and a gas velocity respectively; and adding particles of a solid material to the liquid, wherein the particles are wettable by the liquid, and whereby foam formation in the reactor is suppressedType: GrantFiled: October 4, 1996Date of Patent: July 13, 1999Assignee: Intevep, S.A.Inventors: Jose Guitian, Daniel D. Joseph, Julio Krasuk
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Patent number: 5922191Abstract: A process for suppressing foam formation in a vessel includes the steps of feeding a liquid and a gas to a vessel at a liquid velocity and a gas velocity respectively; adding particles of a solid material to the liquid, the particles having a particle size and particle density; and selecting at least one of the liquid velocity, particle size and particle density so as to fluidize the particles in the liquid, whereby foam formation in the vessel is suppressed. The particles are preferably liquid phase phobic particles.Type: GrantFiled: June 25, 1997Date of Patent: July 13, 1999Assignee: Intevep, S.A.Inventors: Clara Mata, Jose Guitian, Daniel D. Joseph, Julio Krasuk
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Patent number: 5916432Abstract: A transition metal salt, preferably ammonium heptamolybdate, is dissolved in water to provide a solution containing the dispersed catalyst precursor. The solution is atomized by passing it through an atomizing nozzle submerged in hot oil. The minute atomized droplets are delivered into the hot oil and the water is flashed to form steam bubbles. The precursor forms catalytic particles distributed in the oil.Type: GrantFiled: September 24, 1997Date of Patent: June 29, 1999Assignee: Alberta Oil Sands Technology and Research AuthorityInventors: Richard Anthony McFarlane, Ted Cyr, Randall Wayne Tedford Hawkins
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Patent number: 5906731Abstract: A hydroprocess catalyzed by a catalyst composition comprising a porous refractory oxide, a molybdenum component, a phosphorus component and an underbedded nickel component, the composition characterized by a Raman spectrum comprising at least one Raman band in each of the regions of (1) about 240 cm.sup.-1 to about 250 cm.sup.-1, and (2) about 595 cm.sup.-1 to about 605 cm.sup.-1. The catalyst is prepared by sequential incorporation of the nickel metal followed by the additional catalytic promoters including a molybdenum component and a phosphorus component.Type: GrantFiled: July 28, 1997Date of Patent: May 25, 1999Assignee: UOPInventors: Suheil F. Abdo, Howard D. Simpson, Pradeep S. Iyer
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Patent number: 5868923Abstract: An improved ebullated bed hydroconversion process is disclosed that utilizes a bimodal heterogeneous catalyst and a metal containing oil-miscible-catalysts compound to achieve a reduction in sediment, an increase in conversion, a reduction in the energy utilized to maintain reaction conditions and increases the stability of the ebullated catalyst bed. The oil-miscible compound may be provided in a concentration so as to provide about 1 to about 60 wppm metal based on the charge hydrocarbon oil.Type: GrantFiled: April 23, 1997Date of Patent: February 9, 1999Assignee: Texaco IncInventors: Michael K. Porter, Glenn A. Clausen, Jeffery B. Harrison, Ajit K. Bhattacharya
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Patent number: 5866748Abstract: A process for the hydroisomerization of a predominantly C.sub.8 -C.sub.20 n-paraffinic feed to produce a high purity C.sub.8 -C.sub.20 paraffinic solvent composition having superior low temperature properties, and low viscosities. The feed is contacted, with hydrogen, over a dual functional catalyst to hydroisomerize and convert the feed to a product comprising a mixture of n-paraffins and isoparaffins, the isoparaffins component of which contains greater than 50 percent of mono-methyl species, with the molar ratio of isoparaffins:n-paraffins ranging from about 0.5:1 to 9:1.Type: GrantFiled: April 23, 1996Date of Patent: February 2, 1999Assignee: Exxon Research and Engineering CompanyInventors: Robert Jay Wittenbrink, Daniel Francis Ryan, Steven Earl Silverberg
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Patent number: 5837128Abstract: A method is disclosed for optimizing the pressure drop in the catalytic conversion of a feed in a bed of catalyst particles in a vertically arranged reactor by grading the catalyst particles within the bed by pressure drop.Type: GrantFiled: May 24, 1996Date of Patent: November 17, 1998Assignee: Amoco CorporationInventors: George A. Huff, Jr., Frederick T. Clark, James L. Taylor
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Patent number: 5833839Abstract: Discloses high purity solvent compositions constituted of n-paraffins and isoparaffins, with the isoparaffins containing predominantly methyl branches, and having an isoparaffin:n-paraffin ratio sufficient to provide superior low temperature properties and low viscosities. The solvent compositions are made by a process wherein a waxy, or long chain paraffinic feed, especially a Fischer-Tropsch wax, is reacted over a dual function catalyst to produce hydroisomerization and hydrocracking reactions at 700.degree. F.+ conversion levels ranging from about 20 to 90 wt. % to provide a C.sub.5 -1050.degree. F. crude fraction. The C.sub.5 -1050.degree. F. crude fraction is then topped via atmospheric distillation to produce a low boiling fraction with an upper end point boiling between about 650.degree. F. and 750.degree. F. The low boiling fraction is fractionated and a narrow boiling range solvent obtained therefrom; one which can be further divided into solvent grades of various boiling ranges.Type: GrantFiled: December 8, 1995Date of Patent: November 10, 1998Assignee: Exxon Research and Engineering CompanyInventors: Robert Jay Wittenbrink, Steven Earl Silverberg, Daniel Francis Ryan
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Hydroconversion process employing catalyst with specified pore size distribution and no added silica
Patent number: 5827421Abstract: A process for hydrotreating a charge hydrocarbon feed containing components boiling above 1000.degree. F. and sulfur, metals, and carbon residue, to provide product containing decreased levels of components having a boiling point greater than 1000.degree. F., decreased levels of sulfur, particularly decreased sulfur contents in the unconverted 1000.degree. F.+ boiling point products, and reduced sediment, which comprises:contacting said hydrocarbon feed with hydrogen at isothermal hydroprocessing conditions in the presence of, as catalyst, a porous alumina support containing .ltoreq.0.5 wt % of silica, wherein no silicon containing components, particularly silicon oxide, are intentionally added to the alumina, alumina support, impregnating solution or impregnating solutions, and bearing 2.2-6 wt % of a Group VIII metal oxide, 7-24 wt % of a Group VIB metal oxide and 0.0-2.0 wt % of a phosphorus oxide,said catalyst having a Total Surface Area of 195-230 m.sup.2 /g, a Total Pore Volume of 0.Type: GrantFiled: August 24, 1995Date of Patent: October 27, 1998Assignee: Texaco IncInventor: David Edward Sherwood, Jr. -
Patent number: 5804058Abstract: A process is disclosed for the catalytic dewaxing of a hydrocarbon oil feed comprising waxy molecules, which process comprises:contacting a feed under catalytic dewaxing conditions with a catalyst composition comprising a molecular sieve containing crystallites covalently bound alumina moieties in its framework and having pores with a diameter in the range of from 0.35 to 0.80 nm and recovering a product having a reduced pour point, wherein the molecular sieve has been modified to reduce the mole percentage of alumina by coating the surface of the crystallites with a refractory inorganic oxide which is essentially free of alumina.Type: GrantFiled: June 13, 1996Date of Patent: September 8, 1998Assignee: Shell Oil CompanyInventors: Pierre Grandvallet, Laurent Georges Huve, Theodorus Ludovicus Michael Maesen
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Patent number: 5767037Abstract: The present invention is directed toward a highly active aromatics hydrogenation catalyst and its use. The catalyst composition is prepared by:(a) decomposing a catalyst precursor selected from the group consisting of metal amine molybdates, metal amine tungstates and mixtures thereof, wherein said metal amine catalyst precursor has the general formulaML(Mo.sub.y W.sub.1-y O.sub.4)awhere M is Cr and/or one or more divalent promoter metals selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn; L is one or more neutral nitrogen containing ligands at least one of which is a chelating polydentate ligand; 0.ltoreq.y.ltoreq.1; and a=1 for non-chromium containing catalysts and wherein 0.5.ltoreq.a.ltoreq.3 for chromium containing catalysts, at a temperature of about 200.degree. to about 400.degree. C. in an inert atmosphere; and(b) reducing at a temperature of about 300.degree. to about 450.degree. C. said metal amine catalyst precursor to form a catalyst.Type: GrantFiled: August 18, 1995Date of Patent: June 16, 1998Assignee: Exxon Research and Engineering CompanyInventors: Teh Chung Ho, Charles R. Symon, Viktor Buchholz, Michel Daage
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Patent number: 5755955Abstract: A process for hydrocracking a heavy hydrocarbon oil feedstock, a substantial portion of which boils above 524.degree. C. is described which includes the steps of: (a) passing a slurry feed of a mixture of heavy hydrocarbon oil feedstock and from about 0.01-4.0% by weight (based on fresh feedstock) of coke-inhibiting additive particles upwardly through a confined vertical hydrocracking zone, the hydrocracking zone being maintained at a temperature between about 350.degree. and 600.degree. C. a pressure of at least 3.Type: GrantFiled: December 21, 1995Date of Patent: May 26, 1998Assignee: Petro-CanadaInventors: N. Kelly Benham, Barry B. Pruden, Michel Roy
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Patent number: 5723716Abstract: It has been discovered that waxy feeds can be upgraded using a catalyst made by combining powdered dewaxing catalyst with powdered isomerization catalyst said mixture of powdered catalysts being formed into a discrete particle.Type: GrantFiled: August 27, 1996Date of Patent: March 3, 1998Assignee: Exxon Research and Engineering CompanyInventors: Dee Anne Brandes, David N. Zinkie, Sandra J. Alward
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Patent number: 5688736Abstract: The invention relates to an improved method of presulfurizing a sulfidable metal oxide(s)-containing catalyst which minimizes sulfur stripping upon start-up of a reactor and improves catalyst activity. The method consists of contacting a sulfidable metal oxide(s)-containing catalyst with elemental sulfur at a temperature such that said elemental sulfur is substantially incorporated in the pores of said catalyst by sublimation and/or melting and heating the sulfur-incorporated catalyst in the presence of a liquid olefinic hydrocarbon at a temperature greater than about 150.degree. C.Type: GrantFiled: October 26, 1995Date of Patent: November 18, 1997Assignee: CRI International, Inc.Inventors: James Dallas Seamans, Charles Terrell Adams, Wendy Beth Dominguez, Andrew An-Ju Chen
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Patent number: 5622616Abstract: Hydroconversion of heavy hydrocarbon oils using solid heterogeneous catalyst and small amounts of oil-miscible compound, like molybdenum naphthenate, improves total pore volume properties of the catalyst.Type: GrantFiled: January 30, 1995Date of Patent: April 22, 1997Assignee: Texaco Development CorporationInventors: Michael K. Porter, Glenn A. Clausen