Solvent Extraction Patents (Class 208/87)
  • Patent number: 7582204
    Abstract: The invention relates to a process, including removal of resins, for the treatment of a hydrocarbon charge, at least 80% of the compounds of which have a boiling point which is above or equal to 340° C., in which process: the charge is sent to a fractionation stage during which the recovery takes place of at least one heavy fraction and at least one light fraction, at least some of the heavy fraction is sent to an extraction stage during which resins contained in said heavy fraction are extracted, and a purified fraction is recovered, a mixture is made which comprises at least part of the purified fraction which was obtained in the extraction stage and at least one light fraction which was obtained in the fractionation stage, and the mixture thus obtained is sent to a cracking stage.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: September 1, 2009
    Assignee: Institut Francais du Petrole
    Inventors: Christophe Gueret, Raphaël Huyghe, Hugues Dulot, Patrick Euzen
  • Patent number: 7384557
    Abstract: The process and apparatus are for removing a solute from a solute-bearing solid product by means of a solvent which remains in liquid state throughout the entire oil extraction process. In one embodiment, the solvent is normally in gazeous state at ambient temperature and pressure values, but is used mainly in liquid state within the method and apparatus of the present invention by maintaining such pressure and temperature values within the apparatus so that the solvent will remain in this liquid state.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: June 10, 2008
    Assignee: Applied Ambient Extraction Process Consultants, LLC
    Inventors: Darrell J. Phillips, George B. Russell
  • Publication number: 20080116108
    Abstract: The invention relates to a process for preparing lube oil basestocks from lube oil boiling range feeds. More particularly, the present invention is directed toward a process wherein a wax containing feed is solvent dewaxed to produce at least a partially dewaxed lube oil boiling range stream, which is hydrodewaxed to produce a first lube basestock. The first lube basestock is added to an independently selected second lube basestock and additives to make a lubricating oil.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 22, 2008
    Inventors: Lei Zhang, Elizabeth Stavens, Lisa I-Ching Yeh, Ian A. Cody, William J. Murphy, Thomas R. Palmer
  • Patent number: 7288685
    Abstract: A process for producing olefins from biorenewable feedstocks has been developed. The process comprises first pretreating the feedstock, e.g. vegetable oil, to remove contaminants such as alkali metals and then cracking the purified feedstock in a fluidized catalytic cracking (FCC) zone operated at conditions to provide C2-C5 olefins.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: October 30, 2007
    Assignee: UOP LLC
    Inventor: Terry L. Marker
  • Patent number: 7226533
    Abstract: A process to re-refine used petroleum oils by extraction with aliphatic solvents, wherein after eliminating the extract solvent, the process consists of the following treatments, (a) flash, continuous vaporization, at atmospheric pressure or near atmospheric pressure, to separate the light fractions, in the presence of small amounts of a basic compound or a reducing agent or a combination of both and (b) continuous distillation, in a fractionating column, of the bottom liquid obtained in stage (a), under vacuum and moderate temperatures, in the presence of a basic compound or a reducing compound or a combination of both, with recirculation from the bottom of the column to its feed; separating, as lateral extractions, the vacuum gas-oil or spindle oil and the lubricant bases and, as bottom product, a fuel-oil or asphaltic component.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: June 5, 2007
    Assignee: Sener Grupo De Ingenieria, S.A.
    Inventor: Jerónimo Angulo Aramburu
  • Patent number: 7008460
    Abstract: Process for the production of thermally converted light products from residual feedstock and electricity from syngas obtained from thermal conversion residue as feedstock, in which process flue gas exiting from the electricity producing unit is fed through a heat recovery unit providing at least part of the heat required in the thermal conversion process.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: March 7, 2006
    Assignee: Shell Oil Company
    Inventors: Jacobus Henricus Gerardus Beurskens, Johannes Didericus De Graaf, Anthony Malcolm Rigby
  • Patent number: 6974535
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: December 13, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groestch, Sylvain S. Hantzer
  • Patent number: 6951605
    Abstract: A method to produce high quality lube oil products involving hydrotreating a waxy feed to produce a hydrotreated feed and subsequently hydrodewaxing the hydrotreated feed and hydrofinishing the hydrodewaxed feed.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: October 4, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ian A. Cody, William J. Murphy
  • Publication number: 20040168955
    Abstract: The present invention relates to a process to increase extraction yields and improve dewaxing performance of a lube boiling range stream. More particularly, the present invention is a process to produce at least one base oil by contacting a light lube stream with a polar solvent in a solvent extraction zone, then mixing the resulting extract with a second, heavier lube stream, extracting the mixture with a polar solvent, and dewaxing the resultant raffinate.
    Type: Application
    Filed: November 25, 2003
    Publication date: September 2, 2004
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Heather A. Boucher Ashe, Ronald J. Taylor
  • Publication number: 20040163996
    Abstract: This invention relates to a novel method for economically processing vacuum residue from heavy crude oils by selectively processing the difficult and easy components in reactors whose design and operating conditions are optimized for the specific feed. The process utilizes an integrated solvent deasphalting (SDA)/ebullated-bed design wherein the heavy vacuum residue feedstock is initially sent to an SDA unit operated with C4/C5 solvent to achieve a high deasphalted oil (DAO) yield. The resulting SDA products, namely asphaltenes and DAO are separately treated in ebullated-bed reactor(s) systems whose design and operating conditions are optimized for a particular feedstock. The resulting net conversion, associated distillate yield and product qualities are greatly improved relative to treatment of the entire residue feedstock in a common ebullated-bed reactor system.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 26, 2004
    Inventor: James J. Colyar
  • Patent number: 6773578
    Abstract: Lube base stocks and lube stock compositions, as well as a process for preparing lube base stocks and lube stock compositions, are disclosed. The lube oils preferably have a viscosity index above about 115. The process involves obtaining feedstocks that have a 95% point below 1150° F. and feedstocks that have 95% point above 1150° F. The feedstocks that have a 95% point below 1150° F. are catalytically dewaxed, and the feedstocks that have 95% point above 1150° F. are solvent dewaxed. The resulting products can optionally be blended, and the base stocks can be combined with various additives to form lube oil compositions. Hydrotreatment can optionally be performed on the lube base stocks to remove olefins, oxygenates and other impurities. In one embodiment, one or more of the fractions are obtained from Fischer-Tropsch synthesis.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: August 10, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, Joseph A. Biscardi
  • Publication number: 20040108248
    Abstract: A method to produce high quality lube oil products involving hydrotreating a waxy feed to produce a hydrotreated feed and subsequently hydrodewaxing the hydrofinishing the waxy feed.
    Type: Application
    Filed: October 3, 2003
    Publication date: June 10, 2004
    Inventors: Ian A. Cody, William J. Murphy
  • Publication number: 20040108250
    Abstract: An integrated process is disclosed for dewaxing hydrocarbon feedstocks in a sour environment. The process includes hydrotreating, dewaxing, hydrofinishing or combination thereof wherein there is no disengagement between any of the process steps.
    Type: Application
    Filed: October 3, 2003
    Publication date: June 10, 2004
    Inventors: William J. Murphy, Ian A. Cody, Jacob B. Angelo, Zhaozhong Jiang, Jeffrey C. Trewella
  • Patent number: 6673234
    Abstract: A combined process of low degree solvent deasphalting and delayed coking, which comprises feeding a deasphalting stock and a solvent into an extractor and making the yield of the deasphalted oil 70 wt %-95 wt %, and introducing a part or all of the deasphalted oil and optionally a conventional coking stock into a delayed coker. This process increases the yield of liquid products, removes the heavy asphaltene which is prone to coke, extends the run length of the delayed coker, and at the same time, lowers the content of impurities in coke, enlarges the sources of the stocks for producing the needle coke.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: January 6, 2004
    Assignees: China Petroleum and Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Rui Li, Zijun Wang, Jun Long
  • Patent number: 6620313
    Abstract: Hydroconversion process of petroleum and chemical feedstocks using bulk Group VIII/Group VIB catalysts. Preferred catalysts include those comprised of Ni—Mo—W.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: September 16, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Richard Alan Demmin, Kenneth Lloyd Riley, Stuart Leon Soled, Sabato Miseo
  • Patent number: 6592748
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: July 15, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groestch, Sylvain S. Hantzer
  • Publication number: 20030094400
    Abstract: A process for removing sulfur from hydrocarbon streams is described. The organic sulfur compounds are first oxidized to create oxidized sulfur in the hydrocarbon stream and then processing the hydrocarbon stream with hydrogen at hydrodesulfurization conditions to reduce the sulfur to hydrogen sulfide, leaving a hydrocarbon gas stream substantially free of sulfur.
    Type: Application
    Filed: May 23, 2002
    Publication date: May 22, 2003
    Inventors: Robert Edward Levy, Alkis Stavros, Chakka Sudhakar, Vincent Paul Nero, Stephen Jude DeCanio
  • Publication number: 20030089636
    Abstract: Process for the conversion of heavy charges such as heavy crude oils, tars from oil sands and distillation residues, by the combined use of the following three process units: hydroconversion with catalysts in slurry phase (HT), distillation or flash (D), deasphalting (SDA), characterized in that the three units operate on mixed streams consisting of fresh charge and recycled streams, by the use of the following steps:
    Type: Application
    Filed: July 5, 2002
    Publication date: May 15, 2003
    Applicant: ENI S.p.A
    Inventors: Mario Marchionna, Alberto Delbianco, Nicoletta Panariti, Romolo Montanari, Sergio Rosi, Sebastiano Correra
  • Patent number: 6551502
    Abstract: A process for the removal of sulfur compounds from a hydrocarbon stream is disclosed. In a preferred embodiment, the process includes extractive distillation of a gasoline stream from a fluid catalytic cracker to reject olefins to a raffinate stream and simultaneously extract sulfur compounds to an extract stream.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: April 22, 2003
    Assignee: GTC Technology Corporation
    Inventors: Fu-Ming Lee, Joseph C. Gentry, Randi Wright Wytcherley, Lucia Cretoiu, Calambur Shyamkumar
  • Patent number: 6533925
    Abstract: This invention involves heat integration of a solvent deasphalting process with a gasification process and an improved process for separating a resin phase from a solvent solution comprising a solvent, deasphalted oil (DAO) and resin. This improved process comprises heating the solvent solution so as to precipitate the resin from the solvent solution, and then separating the resin and some solvent from the solvent solution. This will produce a resin product and a mixture comprising the DAO and the remaining solvent. The DAO/solvent mixture is then boiled so as to vaporize a fraction of the solvent, with waste heat from a gasification unit providing the heat source for the boiling. The vaporized solvent is removed from the DAO/solvent mixture leaving a resin-free DAO product that contains any unvaporized solvent. The vaporized solvent is used for heating the aforementioned solvent solution and preheating the resin-free DAO/solvent mixture.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: March 18, 2003
    Assignee: Texaco Development Corporation
    Inventors: Paul S. Wallace, Kay A. Johnson, Clint F. Penrose, Jacqueline G. Niccum
  • Patent number: 6531055
    Abstract: The present invention relates to a process for reducing naphthenic acid content of crude oils and its fractions in the presence of an aqueous base selected from Group IA and IIA hydroxides and ammonium hydroxide and mixtures thereof, a phase transfer agent at a temperature and pressure effective to produce a treated petroleum feed having a decreased naphthenic acid content and an aqueous phase containing naphthenate salts, phase transfer agent and base.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: March 11, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Mark Alan Greaney
  • Publication number: 20020153281
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Application
    Filed: December 14, 2000
    Publication date: October 24, 2002
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groetsch, Sylvain S. Hantzer
  • Patent number: 6416655
    Abstract: A method for concentrating the amount of alkylated mono-aromatics in a lubricating oil feedstock useful as a feedstock for sulfonation. The method comprises extracting a feedstock rich in aromatics with a solvent selected from NMP, phenol and furfural, said feedstock containing sufficient water to provide a raffinate having a target VI between about 86 and 97 under extraction conditions of treat and temperature selected to achieve the target VI. The raffinate is then hydrofmed and solvent dewaxed.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: July 9, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Christopher J. S. Kent, Anne M. Zinicola
  • Publication number: 20020040863
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Application
    Filed: June 26, 2001
    Publication date: April 11, 2002
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groestch, Sylvain S. Hantzer
  • Publication number: 20020038777
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Application
    Filed: June 26, 2001
    Publication date: April 4, 2002
    Inventors: Ian A. Cody, William J. Murphy, John E. Gallagher, Joseph P. Boyle, Anne M. Zinicola, Christopher J. May, Jeenok T. Kim, John A. Groestch, Sylvain Hantzer
  • Patent number: 6358399
    Abstract: A process and a device for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column (7) by a cooled solvent (9). At the bottom of the column, liquid phase (12) that contains the solvent and the C2+ hydrocarbons is recovered and hydrogenated (15). The hydrogenation effluent that contains the solvent is introduced into a first distillation column (70) where the solvent is regenerated. The solvent is cooled and recycled at the top of absorption column (7). The C2+ hydrocarbons are collected at the top, and a condensed liquid phase is distilled in a second distillation column (77) to recover a C2 fraction that consists of ethane and ethylene.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: March 19, 2002
    Assignee: Institute Francais du Petrole
    Inventors: Ari Minkkinen, Jean-Hervé Le Gal, Pierre Marache
  • Patent number: 6355850
    Abstract: Electrical oils having improved uninhibited oxidation and electrical resistance are derived by blending a substantially nitrogen and sulfur free paraffinic or naphthenic base oil with a hydrofined light gas oil having a sulfur to nitrogen weight ratio of greater than 100:1 wherein the hydrofined light gas oil is added to the base oil in an amount sufficient to provide a blend having greater than about 0.03 wt % sulfur.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: March 12, 2002
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob Ben Angelo, Thomas Lynn Bays
  • Patent number: 6340429
    Abstract: A process for separating ethane and ethylene from a hydrocarbon steam-cracking effluent is described. Effluent (1) is absorbed in an absorption column by a cooled solvent (9). At the bottom of the column, the liquid phase that contains the solvent and the C2+ hydrocarbons is recovered and hydrogenated (15). The hydrogenation effluent that contains the solvent is introduced into a first distillation column (16). Ethane-ethylene mixture (17) is drawn off laterally from the column, and a phase (19) that contains the solvent and hydrocarbons with at least 3 carbon atoms is drawn off at the bottom of the column. This phase (19) is separated in a second distillation column (22), and C3+ hydrocarbons and, at the bottom of the column, regenerated solvent (26) that is cooled and that is recycled (9, 52) in the absorption column are collected.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: January 22, 2002
    Assignee: Institut Francais du Petrole
    Inventors: Ari Minkkinen, Jean-Hervé Le Gal, Pierre Marache
  • Patent number: 6332974
    Abstract: A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-75O° F.+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650-750° F. range and continuously boils to an end point of at least 1050° F.+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750° F. range.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: December 25, 2001
    Assignee: Exxon Research and Engineering Co.
    Inventors: Robert J. Wittenbrink, Daniel F. Ryan, Paul J. Berlowitz, Jacob J. Habeeb
  • Patent number: 6332975
    Abstract: The invention is a process for making anode grade coke which comprises solvent deasphalting a residue feedstock to obtain an essentially asphaltene-free, resin-containing stream and coking the resin-containing stream in a delayed coker to make anode coke. The solvent deasphalting can make a deasphalted oil stream containing resin or separate deasphalted oil and resin streams. There can be hydrotreating of (1) a minor portion of the residue feedstock wherein the hydrotreated residue is fed to the delayed coker with the resin-containing stream, (2) the resin-containing stream wherein the hydrotreated resin stream is fed to the delayed coker, or (3) a major portion of the residue feedstock wherein the hydrotreated residue is fed to the solvent deasphalting unit.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: December 25, 2001
    Assignee: Kellogg Brown & Root, Inc.
    Inventors: Tayseer Abdel-Halim, Raymond H. Floyd, Jim Y. Low, Jon C. Moretta, Michael A. Silverman, Harold D. Sloan
  • Patent number: 6329980
    Abstract: A signal driving circuit for an active matrix type display device having display pixels arranged in a matrix, comprises a signal waveform correcting circuit receiving an input pixel signal for generating a corrected output pixel signal to the display device, said signal waveform correcting circuit including a delay circuit for generating a delay signal, a difference calculating circuit for calculating a difference signal between the input pixel signal and the delay signal, and a correction circuit for generating the corrected output pixel signal based upon the difference signal and the input pixel signal, wherein a portion of the waveform amplitude of the corrected output pixel signal is formed by adjusting a corresponding portion of the waveform amplitude of the input pixel signal based upon the difference signal.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: December 11, 2001
    Assignee: Sanjo Electric Co., Ltd.
    Inventors: Hisao Uehara, Mitsugu Kobayashi, Yusuke Tsutsui
  • Patent number: 6325918
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock and a lubricating oil basestock prepared by said process. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: December 4, 2001
    Assignee: ExxonMobile Research and Engineering Company
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Linek, William J. Murphy, John E. Gallagher, Gary L. Harting
  • Patent number: 6322692
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone, and a lubricating oil basestock produced by said process.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 27, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Linek, William J. Murphy, John E. Gallagher, Alberto Ravella, Richard A. Demmin
  • Patent number: 6287454
    Abstract: Lubricant oils of low pour point and improved oxidation stability are produced by catalytically dewaxing a lube feedstock over a zeolite dewaxing catalyst such as ZSM-5 in the hydrogen or decationized form. The use of these catalysts enables products of excellent oxidative stability to be obtained and reduces the catalyst aging rate in the first and subsequent dewaxing cycles to values below 5° F./day. The duration of the dewaxing cycles may be extended, particularly in the second and subsequent cycles after hydrogen reactivation.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: September 11, 2001
    Assignee: Mobil Oil Corporation
    Inventors: Thomas R. Forbus, Jr., Chwan P. Kyan
  • Patent number: 6274032
    Abstract: A hydrocarbon source feed is upgraded using a solvent deasphalting (SDA) unit employing a solvent having a critical temperature Tc by initially separating from a first hydrocarbon input stream fractions with an atmospheric equivalent boiling temperature less than about Tf° F. for producing a stream of Tf−fractions and a residue stream (Tf+ stream), where Tf is greater than about Tc−50° F. In the SDA unit, a second hydrocarbon input stream which includes the residue stream is deasphalted for producing a first product stream of substantially solvent-free asphaltenes, and a second product stream containing substantially solvent-free deasphalted oil (DAO). The source feed may be included in either the first or second input streams. The DAO in the second product stream is thermally cracked for producing an output stream that includes thermally cracked fractions and by-product asphaltenes produced by thermally cracking the DAO.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: August 14, 2001
    Assignee: Ormat Industries Ltd.
    Inventors: Richard L. Hood, Phillip B. Rettger, Randall S. Goldstein, Lucien Y. Bronicki
  • Patent number: 6248230
    Abstract: A method is provided for manufacturing cleaner fuels, in which NPC (Natural Polar Compounds), naturally existing in small quantities within various petrolic hydrocarbon fractions, are removed from the petrolic hydrocarbon fractions ranging, in boiling point, from 110 to 560° C. and preferably from 200 to 400° C., in advance of catalytic hydroprocessing. The removal of NPC improves the efficiency of the catalytic process and produces environment-friendly products, such as diesel fuel with a sulfur content of 50 ppm (wt) or lower. Also, the NPC can be used to improve fuel lubricity.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: June 19, 2001
    Assignee: SK Corporation
    Inventors: Wha-Sik Min, Kyung-Il Choi, Sin-Young Khang, Dong-Soon Min, Jae-Wook Ryu, Kwan-Sik Yoo, Jyu-Hwan Kim
  • Patent number: 6099719
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by solvent extracting a feedstock to produce a raffinate, solvent dewaxing the raffinate, selectively hydroconverting the solvent dewaxed raffinate in a two step hydroconversion zone followed by a hydrofinishing zone and a dewaxing zone.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: August 8, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Ian A. Cody, William J. Murphy, Thomas J. Ford
  • Patent number: 6096189
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: August 1, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Alward, William J. Murphy, John E. Gallagher, Alberto Ravella, Richard A. Demmin
  • Patent number: 6080302
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extraction solvent to yield a raffinate which subsequently is hydrotreated to provide a process oil.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: June 27, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Keith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle
  • Patent number: 6024864
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping, the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 15, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E. Hanson
  • Patent number: 6007705
    Abstract: The present invention relates to a process for demetallating a petroleum stream by contacting a metals-containing petroleum feed in the presence of an aqueous base selected from Group IA and IIA hydroxides and carbonates and ammonium hydroxide and carbonate and mixtures thereof, an oxygen containing gas and a phase transfer agent at a temperature of up to 180.degree. C. for a time sufficient to produce a treated petroleum feed having a decreased metals content. The invention provides a method for enhancing the value of petroleum feeds that traditionally have limited use in refineries due to their metals, e.g., Ni and V content.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 28, 1999
    Assignee: Exxon Research and Engineering Co
    Inventors: Mark Alan Greaney, Paul James Polini
  • Patent number: 5993644
    Abstract: A process is provided for preparing high quality Group II and Group III lubricating base oils from a sulfur containing feedstock using mild hydrotreating followed by isomerization/dewaxing followed by hydrogenation over a sulfur resistant hydrogenation catalyst.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: November 30, 1999
    Assignee: Chevron U.S.A. Inc.
    Inventors: Jirong Xiao, Phil Winslow, James N. Ziemer
  • Patent number: 5976353
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: November 2, 1999
    Assignee: Exxon Research and Engineering Co
    Inventors: Ian A. Cody, Douglas R. Boate, Sandra J. Alward, William J. Murphy, John E. Gallagher, Gary L. Harting
  • Patent number: 5976361
    Abstract: A hydrocarbon source feed is upgraded using a solvent deasphalting (SDA) unit employing a solvent having a critical temperature T.sub.c by initially separating from a first hydrocarbon input stream fractions with an atmospheric equivalent boiling temperature less than about T.sub.f .degree. F. for producing a stream of T.sub.f.sup.- fractions and a residue stream (T.sub.f.sup.+ stream), where T.sub.f is greater than about T.sub.c -50.degree. F. In the SDA unit, a second hydrocarbon input stream which includes the residue stream is deasphalted for producing a first product stream of substantially solvent-free asphaltenes, and a second product stream containing substantially solvent-free deasphalted oil (DAO). The source feed may be included in either the first or second input streams. The DAO in the second product stream is thermally cracked for producing an output stream that includes thermally cracked fractions and by-product asphaltenes produced by thermally cracking the DAO.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 2, 1999
    Assignee: Ormat Industries Ltd.
    Inventors: Richard L. Hood, Phillip B. Rettger, Randall S. Goldstein, Lucien Y. Bronicki, Benjamin Doron, Joseph Sinai
  • Patent number: 5935416
    Abstract: A process for producing a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step to a two-step, single-stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step. The effluent from the cold hydrofinishing step is then catalytically dewaxed or in the alternative, solvent dewaxed followed by catalytic dewaxing.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: August 10, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ian A. Cody, Douglas R. Boate, William J. Murphy, Daniel P. Leta
  • Patent number: 5935417
    Abstract: A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone and a dewaxing zone.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: August 10, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ian A. Cody, Douglas R. Boate, William J. Murphy, Daniel P. Leta
  • Patent number: 5919355
    Abstract: A fractioning solvent deasphalting plant applies a solvent whose critical temperature is T.sub.c to a hydrocarbon feed containing asphaltenes and atmospheric distillate having fractions that boil above about T.sub.c -50.degree. F. such that said feed is separated into a substantially solvent-free product stream of atmospheric distillate, a substantially solvent-free product stream containing deasphalted oil substantially free of said atmospheric distillate, and a substantially solvent-free product stream containing asphaltenes substantially free of said atmospheric distillate.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: July 6, 1999
    Assignee: Ormat Industries Ltd
    Inventor: Richard L. Hood
  • Patent number: 5911874
    Abstract: A process for upgrading a wax-containing feedstock to produce a wax and a high VI/low volatility lubricating oil basestock. The process comprises subjecting the raffinate from a solvent extraction step to a two step, single stage hydroconversion process wherein the first step involves severe hydroconversion of the raffinate followed by a cold hydrofinishing step.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: June 15, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ian A. Cody, Douglas R. Boate
  • Patent number: 5846405
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a napthenic rich feed. The combined feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E Hanson
  • Patent number: 5840175
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a naphthenic rich feed to provide a blended feed. The blended feed is then extracted with an aromatic extract solvent to yield a raffinate which subsequently is hydrotreated to provide a process oil.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: November 24, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith K. Aldous, Jacob Ben Angelo, Joseph Philip Boyle