Chemical Treatment (refining Or Modification Except Mere Solvent Extraction) Patents (Class 208/27)
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Patent number: 7727379Abstract: Process to prepare simultaneously two or more base oil grades and middle distillates from a mineral crude derived feed, in particular a de-asphalted oil or a vacuum distillate feed or their mixtures, by performing the following steps: (a) hydrocracking the mineral crude derived feed, thereby obtaining an effluent; (b) distillation of the effluent as obtained in step (a) into one or more middle distillates and a full range residue boiling substantially above 340° C., (c) catalytically dewaxing the full range residue by contacting the residue with a dewaxing catalyst comprising a zeolite of the MTW type and a Group VIII metal, thereby obtaining a dewaxed oil; (d) isolating by means of distillation two or more base oil grades from the dewaxed oil obtained in step (c); and (e) isolating a dewaxed gas oil from the dewaxed-oil obtained in step (c); wherein the dewaxed oil as obtained in step (c) comprises between 10 and 40 wt % of a dewaxed heavy gas oil boiling for more than 70 wt % between 370 and 400° C.Type: GrantFiled: March 1, 2005Date of Patent: June 1, 2010Assignee: Shell Oil CompanyInventors: Nicholas James Adams, Harmannus Julius Hegge, Laurent Georges Huve, Kevin John Anthony Polder, Wiecher Derk Evert Steenge
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Publication number: 20100116711Abstract: Systems and methods for producing n-paraffins are provided. The method can include hydroprocessing at least a portion of a kerosene fraction recovered from a thermally cracked hydrocarbon product to produce a hydroprocessed kerosene product comprising n-paraffins. The n-paraffins can be separated from the hydroprocessed kerosene product to produce an n-paraffins product.Type: ApplicationFiled: November 11, 2009Publication date: May 13, 2010Applicant: KELLOGG BROWN & ROOT LLCInventors: Eric Wong, Anand Subramanian, Kiran V. Shah, Faisal Mohmand
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Patent number: 7663011Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of refractory oxide containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2 theta (?). The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.Type: GrantFiled: August 5, 2005Date of Patent: February 16, 2010Assignee: Lummus Technology Inc.Inventors: Zhiping Shan, Jacobus Cornelis Jansen, Chuen Y. Yeh, Philip J. Angevine, Thomas Maschmeyer, Mohamed S. Hamdy
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Patent number: 7658836Abstract: The process of producing middle distillates from effluents obtained by a Fischer-Tropsch synthesis, comprises a step for hydro-treatment and purification and/or decontamination by passage over a multi-functional guard bed prior to a step of hydrocracking/hydroisomerization. The guard bed reduces the amount of unsaturated compounds, oxygen-containing compounds, particulate mineral solids, and organometallic compounds.Type: GrantFiled: July 17, 2006Date of Patent: February 9, 2010Assignees: Institut Francais du Petrole, ENI S.p.A.Inventors: Patrick Euzen, Vincenzo Calemma
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Publication number: 20090321308Abstract: A method for producing a base oil having a high ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality by hydroisomerization dewaxing a selected Fischer-Tropsch wax under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H2/liter oil.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Inventors: John M. Rosenbaum, Nancy J. Bertrand, Scott C. Deskin, Kamala Krishna, Stephen J. Miller, Susan M. Abernathy
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Patent number: 7622032Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using an hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication as a structure-directing agent, and processes employing SSZ-74 in a catalyst.Type: GrantFiled: December 21, 2006Date of Patent: November 24, 2009Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Allen W. Burton, Jr.
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Publication number: 20090277817Abstract: The wax hydrotreating process of the present invention is characterized by hydrotreating the wax by bringing the wax, under a hydrogen atmosphere and at a liquid space velocity of 0.4 to 4.0 h?1, into contact with a first catalyst 10 containing an ultrastable Y zeolite and an amorphous solid acid and thereafter into contact with a second catalyst 20 that contains a solid acid and substantially does not contain ultrastable Y zeolite.Type: ApplicationFiled: January 11, 2007Publication date: November 12, 2009Inventors: Hiroyuki Seki, Masahiro Higashi
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Publication number: 20090261015Abstract: The invention below shows a preferred method to make high quality base oil at unexpectedly high yields using a combination of hydrotreatment of high waxy feedstocks accompanied by hydroisomerization of the resulting wax to produce an extra high VI lube of greater than 140VI and at least ?18 deg C. pour point or less. The preferred combinations of conditions identified below can surprisingly lead to unexpectedly high yields. This allows the use of higher oil content (or lower wax content) feedstocks.Type: ApplicationFiled: February 20, 2009Publication date: October 22, 2009Inventors: Eric D. Joseck, Timothy Lee Hilbert, Merryl J. Miranda, Jeenok Theresa Kim, Michael Brian Carroll, Bryan E. Steuer
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Patent number: 7597795Abstract: A process for producing lube oil basestocks involving solvent extracting a waxy feed to produce at least a lube oil boiling range raffinate, hydrotreating the lube oil raffinate to produce a hydrotreated raffinate, and dewaxing the hydrotreated raffinate.Type: GrantFiled: September 24, 2004Date of Patent: October 6, 2009Assignee: ExxonMobil Research and Engineering CompanyInventors: Gary P. Schleicher, Kenneth L. Riley, Elizabeth Stavens, Sylvain Hantzer
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Publication number: 20090230021Abstract: The invention relates to a process for reducing the cloud point of a base oil feed having a kinematic viscosity at 100° C. of greater than 10 cSt by separating the molecules inferring the high cloud point from the base oil by (a) depositing said molecules on one side of a cooled surface, (b) obtaining a base oil having a reduced cloud point and (c) melting the deposited molecules and separating the melted molecules from the surface and reusing said surface to perform step (a).Type: ApplicationFiled: July 17, 2006Publication date: September 17, 2009Inventors: Jakob Willem Duininck, Gilbert Robert Bernard Germaine, Wiecher Derk Evert Steenge
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Publication number: 20090203835Abstract: The invention relates to a process to prepare an oil blend comprising: (i) de-asphalting a mineral-derived vacuum residue to obtain a de-asphalted oil, (ii) optionally extracting from the de-asphalted oil an aromatic extract by solvent extraction process; and (iii) blending the de-asphalted oil obtained in (i) or the aromatic extract obtained in (ii) with a paraffin base oil. The invention further relates to the oil blends obtainable by the process, and their uses.Type: ApplicationFiled: July 3, 2006Publication date: August 13, 2009Inventors: Volker Klaus Null, David John Wedlock
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Publication number: 20090178952Abstract: A continuous process for upgrading highly waxy crude oil by contacting the highly waxy crude oil with supercritical water fluid to produce low pour point, high value crude oil having low sulfur, low nitrogen, and low metallic impurities for use as hydrocarbon feedstock.Type: ApplicationFiled: November 24, 2008Publication date: July 16, 2009Applicant: SAUDI ARABIAN OIL COMPANYInventors: Ki-Hyouk Choi, Khalid Ali Al-Majnouni, Ali Al-Shareef
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Publication number: 20090159490Abstract: The hydrocracking method of wax of the invention is a hydrocracking process wherein crude wax is subjected to hydrocracking and the untreated wax fraction that is produced after the hydrocracking is re-supplied for hydrocracking, and wherein hydrocracking of the mixture of the crude wax and untreated wax fraction is carried out in such a manner for a conversion ratio of 50-85% by mass from the wax fraction with a boiling point of 360° C. or above to the light fraction with a boiling point of below 360° C. in the presence of a hydrocracking catalyst. It is thereby possible to simultaneously achieve both an increased heart-cut fraction yield (as the product of the hydrocracking) and a reduced normal paraffin content in the heart-cut fraction when the untreated wax is hydrocracked by a bottom recycling system.Type: ApplicationFiled: January 18, 2007Publication date: June 25, 2009Inventors: Hiroyuki Seki, Masahiro Higashi, Minoru Hatayama
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Patent number: 7510674Abstract: Dielectric fluids comprising oil fractions derived from highly paraffinic wax are provided. Further provided are processes for making these dielectric fluids comprising oil fractions derived from highly paraffinic wax. The dielectric fluids are useful as insulating and cooling mediums in new and existing power and distribution electrical apparatus, such as transformers, regulators, circuit breakers, switchgear, underground electrical cables, and attendant equipment.Type: GrantFiled: December 1, 2004Date of Patent: March 31, 2009Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Nadine L. Yenni, Joseph M. Pudlak
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Publication number: 20090065394Abstract: A method for obtaining a petroleum distillate product is provided, the method includes subjecting a Fischer-Tropsch wax to a process of hydrocraking carried out at a pressure which is substantially lower that the pressure previously used. A catalyst including a noble metal is used in this method. An apparatus for carrying out the method is also provided.Type: ApplicationFiled: September 7, 2007Publication date: March 12, 2009Applicant: UOP LLC, a corporation of the State of DelawareInventor: John A. Petri
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Publication number: 20090065393Abstract: A method for obtaining a petroleum distillate product is provided, the method including subjecting a paraffin-based wax, such as a Fisher-Tropsch wax, to the process of cracking at a pressure less than, or equal to, about 7 Kg/cm2 in the presence of a first catalyst to obtain an olefinic intermediate, the cracking being carried out in a fluid catalytic cracking apparatus, followed by hydrogenating the olefinic intermediate at a pressure less than, or equal to, about 35 Kg/cm2, in the presence of a second catalyst, and recovering the petroleum distillate product. An apparatus for carrying out the method is also provided.Type: ApplicationFiled: September 7, 2007Publication date: March 12, 2009Applicant: UOP, LLCInventor: John A. Petri
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Patent number: 7476645Abstract: Blended lubricant base oils and blended finished lubricants comprising ?70 weight percent Fischer-Tropsch derived lubricant base oils comprising ?6 weight % molecules with monocycloparaffinic functionality and less than 0.05 weight % molecules with aromatic functionality; at least one polyalphaolefin lubricant base oil with a kinematic viscosity at 100° C. greater than about 30 cSt and less than 150 cSt are provided. These blended lubricant base oils and blended finished lubricants exhibit superior friction and wear properties, in addition to other highly desired properties. Also provided are processes for making these blended lubricant base oils and blended finished lubricants.Type: GrantFiled: March 3, 2005Date of Patent: January 13, 2009Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Brent K. Lok, Joseph M. Pudlak, James N. Ziemer, Robert J. Farina
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Patent number: 7473345Abstract: Lubricant blends and finished gear oils comprising a lubricant base oil fraction derived from highly paraffinic wax, a petroleum derived base oil, and a pour point depressant are provided. The lubricant base oil fraction derived from highly paraffinic wax comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at ?40° C.Type: GrantFiled: December 2, 2004Date of Patent: January 6, 2009Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Stephen J. Miller, Joseph M. Pudlak
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Patent number: 7459073Abstract: The present invention relates to new crystalline molecular sieve SSZ-47B prepared using a N-cyclopentyl-1,4-diazabicyclo[2.2.2] octane cation as a structure-directing agent and an amine too large to fit in the pores of the molecular sieve nonasil, methods for synthesizing SSZ-47B and processing employing SSZ-47B in a catalyst.Type: GrantFiled: December 23, 2003Date of Patent: December 2, 2008Assignee: Chevron U.S.A. Inc.Inventors: Allen W. Burton, Jr., Stacey I. Zones
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Patent number: 7429318Abstract: A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreated feedstock is hydrodewaxed using a dewaxing catalyst that has been selectively activated by oxygenate treatment. The hydrodewaxed product may then be hydrofinished.Type: GrantFiled: May 18, 2006Date of Patent: September 30, 2008Assignee: ExxonMobil Research and Engineering CompanyInventors: Ian A. Cody, William J. Murphy, Sylvain Hantzer, David W. Larkin, John E. Gallagher, Jr., Jeenok T. Kim
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Patent number: 7402236Abstract: A process for producing one or more white oils, by: a) hydroisomerization dewaxing a waxy feed with a defined composition over a highly selective and active wax hydroisomerization catalyst with a defined composition under conditions sufficient to produce a white oil; and b) collecting one or more white oils, wherein the yield of white oils is high, and they have a low pour point and a good Saybolt color. Also, a process for producing medicinal grade white oils, by a)hydroisomerization dewaxing a waxy feed with a defined composition over a highly selective and active wax hydroisomerization catalyst with a defined composition under conditions sufficient to produce a white oil, b) collecting technical grade white oils having a low pour point and good Saybolt color in high yield, and c) hydrofinishing the technical grade white oils at conditions sufficient to produce medicinal grade white oils that pass the RCS test.Type: GrantFiled: July 22, 2004Date of Patent: July 22, 2008Assignee: Chevron USAInventors: Stephen J. Miller, Susan M. Abernathy, John M. Rosenbaum
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Patent number: 7390395Abstract: The present invention relates to new crystalline molecular sieve SSZ-56 prepared using a N,N-diethyl-2-methyldecahydroquinolinium cation as a structure directing agent, methods for synthesizing SSZ-56 and processes employing SSZ-56 in a catalyst.Type: GrantFiled: June 16, 2006Date of Patent: June 24, 2008Inventor: Saleh Elomari
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Patent number: 7384536Abstract: Lubricant blends and finished gear oils comprising a Fischer-Tropsch derived lubricant base oil fraction, a petroleum derived base oil, and a pour point depressant are provided. The Fischer-Tropsch derived lubricant base oil fraction comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at ?40° C.Type: GrantFiled: May 19, 2004Date of Patent: June 10, 2008Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Stephen J. Miller, Joseph M. Pudlak
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Patent number: 7371315Abstract: A process for production of very high-quality base oils, and simultaneous production of high-quality middle distillates, comprises the successive stages of hydroisomerization and catalytic dewaxing. The hydroisomerization takes place in the presence of a catalyst containing at least one noble metal deposited on an amorphous acid support, the metal dispersion being less than 20%. The support is preferably an amorphous silica-alumina. The catalytic dewaxing takes place in the presence of a catalyst containing at least one hydrodehydrogenating element (Group VIII) and at least one molecular sieve chosen from ZBM-30, EU-2, and EU-11.Type: GrantFiled: December 13, 2001Date of Patent: May 13, 2008Assignee: Institut Francáis du PetroleInventors: Eric Benazzi, Nathalie Marchal-George, Tivadar Cseri, Pierre Marion, Christophe Gueret, Slavik Kasztelan
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Patent number: 7354508Abstract: The invention relates to a process to prepare a heavy and a light lubricating base oil from a partly isomerized Fischer-Tropsch derived feedstock, the feedstock having an initial boiling point of below 400° C. and a final boiling point of above 600° C. by (a) separating the fraction via distillation into a light base oil precursor fraction and a heavy base oil precursor fraction; (b) reducing the pour point of each separate base oil precursor fraction via dewaxing; and, (c) isolating the desired base oil products from the dewaxed oil fractions as obtained in step (b).Type: GrantFiled: June 25, 2003Date of Patent: April 8, 2008Assignee: Shell Oil CompanyInventors: Nicholas James Adams, Jan Lodewijk Maria Dierickx, Gilbert Robert Bernard Germaine, Laurent Georges Huve, David John Wedlock
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Patent number: 7347928Abstract: A process to prepare a spindle oil, light machine oil and a medium machine oil base oil grade by: (a) performing a separate catalytic dewaxing on a spindle oil fraction, a light machine oil fraction and a medium machine oil fraction as obtained in a vacuum distillation of a bottoms fraction of a fuels hydrocracking process; (b) performing a separate hydrofinishing of the light and medium machine oil fractions obtained in step (a); (c) separating the low boiling compounds from the spindle oil, light machine oil and medium machine oil fractions as obtained in step (a) and (b) and obtaining the spindle oil, light machine oil and medium machine oil base oil grade; (d) wherein the vacuum distillation is performed by altematingly performing the distillation in two modes wherein the first mode (d1) the bottoms fraction is separated into a gas oil fraction, a spindle oil fraction, a medium machine oil fraction and a first rest fraction boiling between said spindle oil and medium machine oil fraction and in the seconType: GrantFiled: December 18, 2001Date of Patent: March 25, 2008Assignee: Shell Oil CompanyInventors: Johannes Van Beijnum, Arjen Peter Geukema, Kevin John Anthony Polder
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Publication number: 20080067108Abstract: Methods are provided for increasing the temperature of a section of conduit used for the production or transmission of hydrocarbon. According to one aspect, a method is provided for increasing the temperature of a section of conduit used for the production or transmission of hydrocarbon, the method comprising the steps of: forming a treatment fluid comprising: (i) a carrier fluid; (ii) a first reactant and a second reactant, wherein the first reactant and second reactant are selected for being capable of reacting together in an exothermic chemical reaction; the first and second reactant are in at least sufficient concentrations in the carrier fluid to generate a theoretical heat of reaction of at least 1,000 kJ/liter of the treatment fluid; and (iii) a catalyst for the reaction between the first reactant and the second reactant, wherein at least some of the catalyst is suspended in the carrier fluid in a solid form that is adapted to help control the release of the catalyst into the carrier fluid.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Inventors: Diptabhas Sarkar, Stephen T. Arrington, Ronald J. Powell, Ian D. Robb, Bradley L. Todd
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Patent number: 7344631Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.Type: GrantFiled: August 29, 2003Date of Patent: March 18, 2008Assignee: ExxonMobil Research and Engineering CompanyInventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Publication number: 20070284284Abstract: The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium)dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions.Type: ApplicationFiled: June 1, 2007Publication date: December 13, 2007Inventors: Stacey I. Zones, Allen W. Burton, Theodorus Ludovicus Michael Maesen, Berend Smit, Edith Beerdsen
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Patent number: 7282134Abstract: A process for manufacturing a lubricating base oil by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an is dimerized oil; and d) hydrofinishing said isomerized oil to produce a lubricating base oil having specific desired properties.Type: GrantFiled: December 23, 2003Date of Patent: October 16, 2007Assignee: Chevron USA, Inc.Inventors: Susan M. Abernathy, David C. Kramer, John M. Rosenbaum, Stephen J. Miller, Russell R. Krug
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Patent number: 7282138Abstract: A distillate fuel feed is hydrotreated to remove heteroatoms and then separated into light and heavy hydrotreated fractions, with the heavy fraction catalytically dewaxed to improve low temperature properties. The hydrotreating and dewaxing are conducted in separate stages, which may be in the same reactor vessel. Fresh hydrogen may be passed into the dewaxing stage, with the dewaxing stage gaseous effluent then passed into the hydrotreating stage to provide hydrogen for the hydrotreating. Existing hydrotreating reaction vessels and facilities may be retrofitted to add one or more dewaxing stages.Type: GrantFiled: September 10, 2004Date of Patent: October 16, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Edward S. Ellis, Ramesh Gupta, William J. Novak
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Patent number: 7282465Abstract: A catalyst comprising at least one ZBM-30 zeolite, synthesized in the presence of a particular structuring agent such as triethylenetetramine, at least one porous mineral matrix, at least one hydro-dehydrogenating element, preferably chosen from the elements of Group VIB and Group VIII of the periodic table, is used in order to improve the pour point of charges containing long (more than 10 carbon atoms) linear and/or slightly branched paraffins, in particular in order to convert, with a good yield, charges having high pour points to at least one cut having a low pour point and a high viscosity index for oil bases.Type: GrantFiled: March 24, 2004Date of Patent: October 16, 2007Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Emmanuelle Guillon, Johan Martens
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Patent number: 7267758Abstract: For producing very high quality base stock and for simultaneously producing high quality middle distillates, successive hydroisomerisation and catalytic dewaxmg steps are employed wherein the hydroisomerisation is carried out in the presence of a catalyst containing at least one noble metal deposited on an amorphous acidic support, the dispersion of the metal being 20%-100%. The support is preferably an amorphous silica-alumina. Catalytic dewaxing is carried out in the presence of a catalyst containing at least one hydrodehydrogenating element (group VIII) and at least one molecular sieve selected from ZBM-30, EU-2 and EU-11.Type: GrantFiled: December 13, 2001Date of Patent: September 11, 2007Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Nathalie Marchal-George, Tivadar Cseri, Pierre Marion, Christophe Gueret
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Patent number: 7261805Abstract: A process for upgrading a hydrocarbon feedstock containing waxy components and having an end boiling point exceeding 650° F., which includes contacting the feedstock at superatmospheric hydrogen partial pressure with an isomerization dewaxing catalyst that includes ZSM-48 and contacting the feedstock with a hydrocracking catalyst to produce an upgraded product with a reduced wax content. Each catalyst is present in an amount sufficient to reduce the cloud point and the pour point of the feedstock at a conversion of greater than about 10%, and an overall distillate yield of greater than about 10% results from the process.Type: GrantFiled: May 2, 2003Date of Patent: August 28, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Michael T. Grove, Randall D. Partridge, Terry E. Helton, David A. Pappal, Philip J. Angevine, Dominick N. Mazzone
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Patent number: 7261806Abstract: A process to prepare a base oil starting from a slack wax containing feedstock by (a) contacting the feedstock in the presence of hydrogen with a sulphided hydrodesulphurisation catalyst having nickel and tungsten on an acid amorphous silica-alumina carrier and (b) performing a pour point reducing step on the effluent of step (a) to obtain the base oil.Type: GrantFiled: June 7, 2002Date of Patent: August 28, 2007Assignee: Shell Oil CompanyInventors: Gerard Benard, Eric Duprey, Johannes Anthonius Robert Van Veen
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Patent number: 7250107Abstract: For producing basic oils and in particular very high quality oils, i.e. oils possessing a high viscosity index (VI), a low aromatics content, good UV stability and a low pour point, from oil cuts having an initial boiling point higher than 340° C., possibly with simultaneous production of middle distillates (in particular gasoils and kerosene) of very high quality, i.e. having a low aromatics content and a low pour point, the invention provides a flexible procedure for producing oils and middle distillates from a charge containing heteroatoms, i.e. containing more than 200 ppm by weight of nitrogen, and more than 500 ppm by weight of sulphur. The procedure comprises at least one hydrorefining stage, at least one stage of catalytic dewaxing on zeolite, and at least one hydrofinishing stage.Type: GrantFiled: July 23, 2001Date of Patent: July 31, 2007Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Christophe Gueret, Pierre Marion, Alain Billon
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Patent number: 7220350Abstract: A waxy hydrocarbon feed is catalytically treated with a dewaxing catalyst that has been selectively activated. The selective activation of the catalyst involves treating the catalyst with at least one oxygenate. The selectively activated catalyst can then be used to dewax waxy hydrocarbon to improve yield and product quality of the isomerate product.Type: GrantFiled: October 3, 2003Date of Patent: May 22, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Ian A. Cody, William J. Murphy, Sylvain Hantzer
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Patent number: 7201838Abstract: Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided 10-ring, 1-dimensional zeolite catalyst that has been reduced and then treated by contacting it with the synthesized hydrocarbons containing one or more oxygenates, including indigenous oxygenate. Tail gas from the hydrodewaxing reactor can be used for the hydrocarbon synthesis.Type: GrantFiled: August 29, 2003Date of Patent: April 10, 2007Assignee: ExxonMobil Research and Engineering CompanyInventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page
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Patent number: 7198710Abstract: A method for producing lubricant base oils is provided comprising the steps of: (a) separating a feedstock into a light lubricant base oil fraction and a heavy fraction; (b) hydroisomerizing the fractions over a medium pore size molecular sieve catalyst under hydroisomerization conditions to produce an isomerized light lubricant base oil fraction having a pour point less than or equal to a target pour point of the lubricant base oils and an isomerized heavy fraction having a pour point of equal to or greater than the target pour point of the lubricant base oils and a cloud point greater than the target cloud point of the lubricant base oils; and (c) dehazing the isomerized heavy fraction to provide a heavy lubricant base oil having a pour point less than or equal to the target pour point of the lubricant base oils and a cloud point less than or equal to the target cloud point of the lubricant base oils.Type: GrantFiled: March 10, 2003Date of Patent: April 3, 2007Assignee: Chevron U.S.A. Inc.Inventors: Stephen J. Miller, John M. Rosenbaum
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Patent number: 7195706Abstract: A process for manufacturing a finished lubricant by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an isomerized oil; and d) hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having specific desired properties; and e) blending the lubricating base oil with at least one lubricant additive.Type: GrantFiled: December 23, 2003Date of Patent: March 27, 2007Assignee: Chevron U.S.A. Inc.Inventors: Susan M. Abernathy, David C. Kramer, John M. Rosenbaum, Stephen J. Miller, Russell R. Krug, James N. Ziemer, Robert J. Farina, Mark L. Sztenderowicz
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Patent number: 7132043Abstract: Process to prepare a lubricating base oil starting from a lubricating base oil which is obtained by first removing part of the aromatic compounds from a petroleum fraction boiling in the lubricating oil range by solvent extraction and subsequently dewaxing the solvent extracted product, wherein the following steps are performed, (a) contacting the lubricating base oil with a suitable sulphided hydrotreating catalyst in a first hydrotreating step; (b) separating the effluent of step (a) into a gaseous fraction and a liquid fraction; (c) contacting the liquid fraction of step (b) with a catalyst comprising a noble metal component supported on an amorphous refractory oxide carrier in the presence of hydrogen in a second hydrotreating step; and (d) recovering the lubricating base oil.Type: GrantFiled: May 26, 2000Date of Patent: November 7, 2006Assignee: Shell Oil CompanyInventors: Eric Duprey, Jean-Paul Fattaz, Roland Albert Charles Garin, Patrick Moureaux
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Patent number: 7087152Abstract: A waxy hydrocarbon feed is catalytically dewaxed with a catalyst that has been selectively activated. The selective activation of the catalyst involves contacting the dewaxing catalyst with a feed mixture containing waxy hydrocarbon and at least one oxygenate. The process results in improved catalyst performance resulting in improved yield of isomerate at equivalent pour.Type: GrantFiled: October 3, 2003Date of Patent: August 8, 2006Assignee: ExxonMobil Research and Engineering CompanyInventors: Ian A. Cody, William J. Murphy, Sylvain Hantzer
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Patent number: 7083713Abstract: A composition of lubricating base oil having a weight percent of all molecules with at least one aromatic function less than 0.30, a weight percent of all molecules with at least one cycloparaffin function greater than 10, and a ratio of weight percent of molecules with monocycloparaffins to weight percent of molecules with multicycloparaffins greater than 15.Type: GrantFiled: December 23, 2003Date of Patent: August 1, 2006Assignee: Chevron U.S.A. Inc.Inventors: Susan M. Abernathy, David C. Kramer, John M. Rosenbaum, Stephen J. Miller, Russell R. Krug
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Patent number: 7077947Abstract: A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreated feedstock is hydrodewaxed using a dewaxing catalyst that has been selectively activated by oxygenate treatment. The hydrodewaxed product may then be hydrofinished.Type: GrantFiled: October 3, 2003Date of Patent: July 18, 2006Assignee: ExxonMobil Research and Engineering CompanyInventors: Ian A. Cody, William J. Murphy, Sylvain Hantzer, David W. Larkin, John E. Gallagher, Jr., Jeenok T. Kim
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Patent number: 7074320Abstract: An integrated process for preparing a lubricating oil base stock includes an isomerization step followed by a solvent dewaxing step. A waxy feed is isomerized to an intermediate pore point, which is at least 6° C. above a target pour point, over a select molecular sieve having specified pore properties. The isomerized oil is then solvent dewaxed to a very low pour point. This process produces a dewaxed lubricating oil base stock which has an exceptionally high viscosity index.Type: GrantFiled: July 24, 2003Date of Patent: July 11, 2006Assignee: Chevron U.S.A. Inc.Inventor: Stephen J. Miller
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Patent number: 7074384Abstract: A new family of crystalline molecular sieves is described having a characteristic XRD pattern as illustrated in FIG. 1, and having three sharp peaks at 2? (CuK?) of 8.82, 12.44, and 23.01.Type: GrantFiled: December 7, 2001Date of Patent: July 11, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld Maria Mertens, Johan Adriaan Martens, Raman Rayishankar, Christine Eva Antiona Kirschhock, Pierre August Jacobs, Antonie Jan Bons, Wilfried J. Mortier
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Patent number: 7053254Abstract: A method for improving the lubricating properties of a distillate base oil characterized by a pour point of 0 degrees C. or less and a boiling range having the 10 percent point falling between about 625 degrees F. and about 790 degrees F. and the 90 percent point falling between about 725 degrees F. and about 950 degrees F., the method comprises blending with said distillate base oil a sufficient amount of a pour point depressing base oil blending component to reduce the pour point of the resulting base oil blend at least 3 degrees C. below the pour point of the distillate base oil, wherein the pour point depressing base oil blending component is an isomerized Fischer-Tropsch derived bottoms product having a pour point that is at least 3 degrees C. higher than the pour point of the distillate base oil.Type: GrantFiled: November 7, 2003Date of Patent: May 30, 2006Assignee: Chevron U.S.A, Inc.Inventor: Stephen J. Miller
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Patent number: 7029651Abstract: The invention relates to a novel microporous crystalline material ITQ-19 used in the catalytic conversion of organic compounds, such as, for example, the dewaxing and isodewaxing of paraffins and the disproportionation of toluene. Said material has a characteristic X-ray diffractogram, a high absorption capacity and the empirical formula x(M1/nXO2):yYO2:(1?y)SiO2 wherein x has a value less than 0.2; y has a value less than 0.1; M is at least an inorganic cation with a +n charge; X is at least a chemical element having oxidation state +3, preferably selected among Al, Ga, B, Cr, Fe; Y is at least a chemical element with oxidation stated +4, preferably selected among Ge, Ti, Sn, V. The inventive material can be obtained by means of a preparation process involving the use of one or more organic additives in a reaction mix which is crystallized by heating.Type: GrantFiled: July 30, 2003Date of Patent: April 18, 2006Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Avelino Corma Canós, Urbano Díaz Morales, Vicente Fornes Segui
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Patent number: 7018525Abstract: This invention relates to processes of producing lubricant base oils comprising paraffinic hydrocarbon components that have optimized branching. The lubricant base oils comprising paraffinic hydrocarbon components with optimized branching have low amounts of branching with the branching concentrated toward the center of the lubricant base oil molecules. The lubricant base oils comprising paraffinic hydrocarbon components with optimized branching have low pour points and extremely high viscosity indexes. The invention further relates to processes of producing commercial lubricants comprising the lubricant base oils comprising paraffinic hydrocarbon components with optimized branching from waxy feeds.Type: GrantFiled: October 14, 2003Date of Patent: March 28, 2006Assignee: Chevron U.S.A. Inc.Inventors: Stephen J. Miller, Dennis J. O'Rear, John Rosenbaum
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Patent number: 7011810Abstract: MFS structure type zeolite manufacture is facilitated by using a second organic molecule in addition to the usual hexaethylpentane diammonium salt.Type: GrantFiled: September 27, 2002Date of Patent: March 14, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Machteld M. Mertens, Daria Nowakiwska Lissy