Patents Examined by James Arnold, Jr.
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Patent number: 6923903Abstract: The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction catalyst composition comprising a porous molecular sieve which contains a metal in an oxidation state above zero within the interior of the pore structure of the sieve as well as a cerium component which enhances the stability and sulfur reduction activity of the catalyst. The molecular sieve is normally a faujasite such as USY. The primary sulfur reduction component is normally a metal of Period 3 of the Periodic Table, preferably vanadium. The sulfur reduction catalyst may be used in the form of a separate particle additive or as a component of an integrated cracking/sulfur reduction catalyst.Type: GrantFiled: December 3, 2002Date of Patent: August 2, 2005Assignees: ExxonMobil Oil Corporation, W.R. Grace & Co.-Conn.Inventors: Arthur W. Chester, Hye Kyung Cho Timken, Terry G. Roberie, Michael S. Ziebarth
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Patent number: 6863803Abstract: A two stage hydrodesulfurizing process for producing low sulfur distillates. A distillate boiling range feedstock containing in excess of about 3,000 wppm sulfur is hydrodesulfurized in a first hydrodesulfurizing stage containing one or more reaction zones in the presence of hydrogen and a hydrodesulfurizing catalyst. The liquid product stream thereof is passed to a first separation stage wherein a vapor phase product stream and a liquid product stream are produced. The liquid product stream, which has a substantially lower sulfur and nitrogen content than the original feedstream is passed to a second hydrodesulfurizing stage also containing one or more reaction zones where it is reacted in the presence of hydrogen and a second hydrodesulfurizing catalyst at hydrodesulfurizing conditions. The catalyst in any one or more reaction zones is a bulk multimetallic catalyst comprised of at lease one Group VIII non-noble metal and at least two Group VIB metals.Type: GrantFiled: January 14, 2000Date of Patent: March 8, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Kenneth Lloyd Riley, Darlene Schuette, Stuart Leon Soled, Sabato Miseo, William Lee Schuette
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Patent number: 6860985Abstract: The invention relates to a method for improving yield in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for regenerating filters employed to remove particulate matter from coker gas oil to improve coker gas oil yield and yield of upgraded coker gas oil products.Type: GrantFiled: November 12, 2002Date of Patent: March 1, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Michael Siskin, Ramesh R. Hemrajani, Glen E. Phillips, Simon R. Kelemen, Kuangnan Qian
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Patent number: 6855247Abstract: A hydroconversion catalyst for hydrodesulfurizing feedstock while preserving octane number of the feedstock includes a support having a mixture of zeolite and alumina, the zeolite having an Si/Al ratio of between about 1 and about 20, and an active phase on the support and including a first metal selected from group 6 of the periodic table of elements, a second metal selected from the group consisting of group 8, group 9 and group 10 of the period table of elements and a third element selected from group 15 of the periodic table of elements. A hydroconversion process is also disclosed.Type: GrantFiled: April 30, 2003Date of Patent: February 15, 2005Assignee: Intevep, S.A.Inventors: Jorge Tejada, Nelson P. Martínez, José Antonio Pérez, Leonardo Escalante, José M. Larrauri, José A. Salazar
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Patent number: 6846406Abstract: The object of the present invention is a process for the elimination of sulphur compounds from the gasoline fraction, characterized in that it comprises carrying out an oxidation reaction of said sulphur compounds using at least one organic-inorganic composite as a catalyst which comprises at least: Si, Ti and silicon linked to carbon and using organic or inorganic hydro-peroxides as oxidating agents. According to the process for the present invention, said organic or inorganic composite is obtained by means of a process that comprises a sililation stage during synthesis or by means of a process that comprises a post-synthesis sililation stage.Type: GrantFiled: April 11, 2003Date of Patent: January 25, 2005Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Avelino Corma Canós, Marcelo Eduardo Domine, Cristina Martinez Sánchez
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Patent number: 6846404Abstract: Provided is a process for converting CO2-rich natural gas into liquid fuel. The process includes introducing a CO2-rich natural gas feed stream into a synthesis gas formation reactor and then forming a synthesis gas. At least a portion of the synthesis gas is then introduced into a Fischer-Tropsch reactor. A Fischer-Tropsch process is conducted generating a Fischer-Tropsch product. A naphtha is separated from the Fischer-Tropsch product and introduced into a naphtha reformer. Hydrogen by-product is generated by reforming the naphtha to obtain a C6-C10 product having a hydrogen to carbon ratio less than about 2.0. At least a portion of the hydrogen by-product is recirculated and mixed with the CO2-rich natural gas feed stream.Type: GrantFiled: April 9, 2002Date of Patent: January 25, 2005Assignee: Chevron U.S.A. Inc.Inventor: Dennis J. O'Rear
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Patent number: 6846403Abstract: The sulfur content of liquid cracking products, especially the cracked gasoline, of the catalytic cracking process is reduced by the use of a sulfur reduction catalyst composition comprising a porous molecular sieve which contains a metal in an oxidation state above zero within the interior of the pore structure of the sieve as well as a rare earth component which enhances the cracking activity of the cracking catalyst. The molecular sieve is normally a faujasite such as USY. The primary sulfur reduction component is normally a metal of Period 4 of the Periodic Table, preferably vanadium. The rare earth component preferably includes cerium which enhances the sulfur reduction activity of the catalyst. The sulfur reduction catalyst may be used in the form of a separate particle additive or as a component of an integrated cracking/sulfur reduction catalyst.Type: GrantFiled: December 28, 1998Date of Patent: January 25, 2005Assignees: Mobil Oil Corporation, W.R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, Scott Kevin Purnell, Terry G. Roberie, Hye Kyung Cho Timken, Xinjin Zhao
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Patent number: 6843905Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.Type: GrantFiled: January 15, 2003Date of Patent: January 18, 2005Assignee: ExxonMobil Research and Engineering CompanyInventors: Gordon F. Stuntz, Robert C. W. Welch, Thomas R. Halbert
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Patent number: 6841061Abstract: An Anti-gelling agent for a hydrocarbon mixture containing a conjugated diene, which comprises (a) at least one compound selected from the group consisting of compounds having an NO radical in the molecule, and precursor compounds capable of forming an NO radical, (b) a phosphorus-containing compound, and (c) at least one compound selected from the group consisting of heterocyclic aldehydes, aromatic aldehydes and condensates of these aldehydes. Clogging in an apparatus for separating and refining a hydrocarbon mixture containing a conjugated diene can be prevented by adding the anti-gelling agent in the apparatus.Type: GrantFiled: April 7, 2000Date of Patent: January 11, 2005Assignee: Zeon CorporationInventor: Keizo Ukita
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Patent number: 6830660Abstract: In a method of producing coke for metallurgy by carbonizing a coal blend obtained by blending plural raw coals in an coke oven, a coal blend containing not less than 60 wt % of a medium coking coal of middle coalification degree and low fluidity having an inert component content of not less than 30% is used as a coal charged into the coke oven, whereby a great amount of raw coal of a brand being cheap and easily available can be blended in a great amount and hence coke for metallurgy having an excellent quality such as strength or the like can be produced by blending few brands of coals as compared with a coal blend of many brands.Type: GrantFiled: March 24, 2000Date of Patent: December 14, 2004Assignee: JFE Steel CorporationInventors: Yutaka Yamauchi, Seiji Sakamoto, Katsutoshi Igawa, Shizuki Kasaoka, Toshiro Sawada, Koichi Shinohara, Yuji Tsukihara, Shinjiro Baba
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Patent number: 6827844Abstract: Fossil fuels are combined with an aqueous liquid and a dialkyl ether to form an aqueous-organic reaction medium which is passed through an ultrasound chamber on a continuous flow-through basis. The emerging mixture separates spontaneously into aqueous and organic phases, from which the organic phase is readily isolated as the desulfurized fossil fuel.Type: GrantFiled: October 23, 2002Date of Patent: December 7, 2004Assignee: SulphCo, Inc.Inventor: Rudolf W. Gunnerman
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Patent number: 6821411Abstract: A method is provided to inject steam into a hydrocarbon effluent passing through a transfer line exchanger (TLE) of a hydrocarbon cracking furnace to reduce the formation of a coke material on the TLE tubesheet. The apparatus that injects the steam is also provided to deliver a distributed steam flow in the low resonance area of the TLE cone.Type: GrantFiled: August 16, 2001Date of Patent: November 23, 2004Assignee: Chevron Phillips Chemical Company LPInventors: Brian D. Baca, Danna L. Kutach
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Patent number: 6814857Abstract: A process for contacting a bed of particulate material, usually catalyst, with a transverse flow of fluid is disclosed. The particulate material moves or is prevented from not moving, while the fluid passes through the bed at a rate greater than the stagnant bed pinning flow rate. This invention is applicable to hydrocarbon conversion processes and allows for higher fluid throughput rates compared to prior art processes.Type: GrantFiled: January 31, 2002Date of Patent: November 9, 2004Assignee: UOP LLCInventors: Weikai Gu, Paul A. Sechrist
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Patent number: 6811683Abstract: A process for producing a diesel fuel stock from bitumen uses steam and a hydroisomerized diesel fraction produced by a gas conversion process, to respectively stimulate the bitumen production and increase the cetane number of a hydrotreated diesel fuel fraction produced by upgrading the bitumen, to form a diesel stock. The diesel stock is used for blending and forming diesel fuel.Type: GrantFiled: March 27, 2001Date of Patent: November 2, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Stephen Mark Davis, Michael Gerard Matturro
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Patent number: 6811684Abstract: There is provided a process for converting hydrocarbons using a catalyst comprising macrostructures having a three-dimensional network of particles comprised of porous inorganic material. The particles of the macrostructures occupy less than 75% of the total volume of the macrostructures and are joined together to form a three-dimensional interconnected network comprised of pores having diameters greater than about 20 Å. The macrostructures can be made by forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material; converting the synthesis mixture to the porous inorganic material; and removing the porous organic ion exchanger from the inorganic material.Type: GrantFiled: April 25, 2002Date of Patent: November 2, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gary David Mohr, Wilfried Jozef Mortier, Xiaobing Feng, Per Johan Sterte, Lubomira Borislavova Tosheva
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Patent number: 6808620Abstract: The present invention relates to new crystalline molecular sieve SSZ-64 prepared using a N-cyclobutylmethyl-N-ethylhexamethyleneiminium cation or N-cyclobutylmethyl-N-ethylheptamethyleneiminium cation structure directing agent, and processes employing SSZ-64 in a catalyst.Type: GrantFiled: August 1, 2002Date of Patent: October 26, 2004Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6803343Abstract: A sorbent composition comprising a support and a reduced-valence noble metal can be used to desulfurize a hydrocarbon-containing fluid such as cracked-gasoline or diesel fuel.Type: GrantFiled: October 12, 2001Date of Patent: October 12, 2004Assignee: ConocoPhillips CompanyInventor: Gyanesh P. Khare
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Patent number: 6800193Abstract: The invention describes a method for decreasing the viscosity of crude oils and residuum utilizing a combination of thermal and acidic treatment. Further, the invention describes a method for making a water-in-oil emulsion, or a solids-stabilized water-in-oil emulsion with a reduced viscosity. The emulsion can be used in enhanced oil recovery methods, including using the emulsion as a drive fluid to displace hydrocarbons in a subterranean formation, and using the emulsion as a barrier fluid for diverting flow of fluids in the formation.Type: GrantFiled: March 28, 2001Date of Patent: October 5, 2004Assignee: ExxonMobil Upstream Research CompanyInventor: Ramesh Varadaraj
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Patent number: 6800586Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.Type: GrantFiled: November 23, 2001Date of Patent: October 5, 2004Assignee: Engelhard CorporationInventors: Chandrashekhar P. Kelkar, David Stockwell, Samuel Tauster
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Patent number: 6797153Abstract: A catalyst for the hydrocracking of heavy oils contains iron and active carbon having an MCH conversion rate of 40-80%, a specific surface area of 600-1000 m2/g of, a pore volume of 0.5 to 1.4 cm3/g, 2-50 nanometers' mesopore volume of not less than 60% and an average pore diameter of 3-6 nanometers, the iron being carried on the active carbon in an amount of 1 to 20 wt. % to the active carbon. The hydrocracking process using the catalyst includes a first step of conducting hydrocracking at a temperature within the range of 360-450° C. at a hydrogen partial pressure of 2-14 MPaG and a second step of conducting hydrocracking at a temperature within the range of 400-480° C. at a hydrogen partial pressure of 2-18 MPaG, which can suppress the generation of coke and remove, in a high efficiency, heavy metals such as Ni and V, asphaltene, residual carbon, sulfur and nitrogen from the heavy oils.Type: GrantFiled: April 27, 2000Date of Patent: September 28, 2004Assignees: Petroleum Energy Center, Toyo Engineering CorporationInventors: Hidetsugu Fukuyama, Koji Ohtsuka, Satoshi Terai, Shuhei Sawamoto