Patents Assigned to Exxon Research & Engineering
  • Patent number: 6223133
    Abstract: The present invention is a method for optimizing multivariate calibrations such as those used on FT-IR analyzers. The method involves the selection of an optimum subset of samples to use in the calibration from a larger set of available samples. The subset selection is done so as to minimize the bias of the resulting calibration while simultaneously maintaining acceptable standard errors and ensuring maximal range for the model.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: April 24, 2001
    Assignee: Exxon Research and Engineering Company
    Inventor: James M. Brown
  • Patent number: 6217771
    Abstract: A method for removing corrosive contaminants from a polar extraction solvent comprises adding water to the solvent to provide a mixture. Then the mixture is contacted with a basic ion exchanger resin to remove the corrosive contaminants. The solvent is recovered and may be reused.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: April 17, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph P. Boyle, David C. Hager, Alan R. Katritzky
  • Patent number: 6214776
    Abstract: An oil composition useful as a high stress electrical oil and especially as a transformer load tap changer oil is provided. The composition comprises a major amount of a paraffinic oil having a low viscosity of less than about 20 cSt @ 40° C. and an effective amount of an additive system including at least one hindered phenolic antioxidant and a benzotriazole metal deactivator.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: April 10, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Jacob B. Angelo, Christopher Jeffrey Still Kent, Frederick Michael Gragg
  • Patent number: 6211252
    Abstract: The invention is a method for forming a solid carbonaceous material into a pumpable fluid by combining the solid with an aqueous treatment solution and then subjecting the mixture to shearing forces. The solid carbonaceous material can be deasphalter unit rock (“DAU rock”), coke, and mixtures of DAU rock and coke. Aqueous treatment solutions contain a water soluble polymer.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: April 3, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Ramesh Varadaraj, Cornelius Hendrick Brons, David William Savage
  • Patent number: 6210559
    Abstract: The present invention is a process for producing a distillate fuel heavier than gasoline. The process is a Fischer-Tropsch (hydrocarbon synthesis) process that includes using 13C NMR to measure cetane number and a cold flow property in order to optimize the process. Cold flow properties include cold filter plugging point, cloud point and pour point.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: April 3, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Bruce R. Cook, Paul J. Berlowitz, Bernard G. Silbernagel, Debra A. Sysyn
  • Patent number: 6210560
    Abstract: The present invention is a method for mitigating the fouling from thermally cracked oils by minimizing the residence time at the temperature when the fouling is highest.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: April 3, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Irwin A. Wiehe, Glen B Brons, Linda S. Cronin
  • Patent number: 6210564
    Abstract: Sulfur-containing petroleum feeds are desulfurized by contacting the feeds with staged addition of sodium metal at temperatures of at least about 250° C. in the presence of excess hydrogen to sodium metal. The formation of Na2S is substantially suppressed and the formation of NaSH is promoted in the desulfurization process.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: April 3, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Glen Brons, Ronald Damian Myers, Roby Bearden, Jr., John Brenton MacLeod
  • Patent number: 6206940
    Abstract: The invention is related to fuels having a high laminar flame speed and particular distillation characteristics. More particularly, the invention is directed towards fuels containing at least one species having a laminar flame speed greater than isooctane's laminar flame speed and specific distillation characteristics including T50, FBP, IBP.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: March 27, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Walter Weissman, John E. Johnston, Anthony M. Dean, Kazuhiro Akihama, Satoshi Iguchi, Shuichi Kubo
  • Patent number: 6199768
    Abstract: A liquid atomization process comprises forming a two-phase fluid mixture of a liquid and a gas, under pressure, dividing the fluid into two separate streams which are passed into and through an impingement mixing zone in which they are impingement mixed to form a single stream of two-phase fluid. The mixed, single stream is then passed into and through a shear mixing zone and then into a lower pressure expansion zone, in which atomization occurs to form a spray of atomized drops of the liquid. The impingement and shear mixing zones comprise respective upstream and downstream portions of a single cavity in a nozzle. This is useful for atomizing the hot feed oil in an FCC process.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 13, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Russell J. Koveal, Jackson I. Ito
  • Patent number: 6199835
    Abstract: A gas distribution grid for a slurry reactor includes a plurality of gas injectors horizontally arrayed across, and extending through, an otherwise gas and liquid impervious plate. The injectors have a throat open at both ends, with a gas pressure reducing bore at one end which is the entrance end and with the other end opening into an upward opening cone. Flow diverting means in the injectors prevents slurry solids from entering the throat and being attrited by the high velocity gas jet exiting the bore into the throat. It is preferred that the gas injectors not protrude above the top surface of the grid and flat space is eliminated by means such as angular fillers, to prevent solids accumulation top of the grid. A chamfer may be present at the junction of the bore and throat to prevent unrestricted expansion of the gas jet entering the throat. This is useful for injecting gas into a reactive hydrocarbon synthesis slurry in a slurry reactor, with reduced catalyst attrition and deactivation.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: March 13, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Min Chang, Constantine A. Coulaloglou, Edward C. Hsu
  • Patent number: 6197718
    Abstract: An improved catalyst activation process for olefinic naphtha hydrodesulfurization. This process maintains the sulfur removal activity of the catalyst while reducing the olefin saturation activity.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: March 6, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Garland B. Brignac, Joseph J. Kociscin, Craig A. McKnight
  • Patent number: 6194473
    Abstract: A formulation of chemical surfactants, solvents and inorganic salts is effective for dispersing heavy oils in both salt and fresh water. The formulation comprises a mixture of a sorbitan ester of an aliphatic monocarboxylic acid, a polyoxyethylene adduct of a sorbitan monoester of an aliphatic monocarboxylic acid, an alkali metal salt of a dialkyl sulfosuccinate, a polyoxyethylene adduct of a sorbitan triester of a monocarboxylic acid, a solvent comprising a hydrocarbon and/or a glycol ether and an inorganic salt containing a soluble divalent cation such as calcium or magnesium.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: February 27, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Richard Raymond Lessard, Kenneth William Becker, Gerard Paul Canevari, Anita George-Ares, Robert John Fiocco
  • Patent number: 6193877
    Abstract: A process for the hydrodesulfurization (HDS) of multiple condensed ring heterocyclic organosulftir compounds found in petroleum and petrochemical streams. HDS is preferably conducted in a mixed bed containing: (a) a Ni-based catalyst on an inorganic refractory support, and (b) a hydrogen sulfide sorbent material. The desulfurized stream can then be passed to further processing, including aromatics saturation and/or ring opening.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: February 27, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Gary B. McVicker, William C. Baird, Jr., James J. Schorfheide, Michel Daage, Darryl P. Klein, Edward S. Ellis, David E. W. Vaughan, Jingguang Chen
  • Patent number: 6190541
    Abstract: The invention is a process for decreasing the acidity of an organic acid containing petroleum oil, comprising contacting said petroleum oil containing organic acids with an effective amount of an alcohol and an effective trace amount of a base selected from Group IA and IIA metal carbonates, hydroxides, phosphates, and mixtures of a hydroxide and phosphate at a temperature and under conditions sufficient to form the corresponding ester of said alcohol.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: February 20, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Michael Siskin, Pacifico Viernes Manalastas, Guido Sartori
  • Patent number: 6191218
    Abstract: The invention is directed towards a method for improving hot tack in blown polyethylene films. Accordingly, a nucleating agent and polyethylene are combined to form a melt from which the film is blown. The method comprises forming a melt of polyethylene and a nucleating agent selected from the group consisting of dibenzylidene sorbitol, paramethyldibenzylidene sorbitol, dimethyldibenzylidene sorbitol, ethylene copolymers containing grafted maleic anhydride, ethylene copolymers containing grafted acrylic acid, and mixtures thereof. Polyethylene films having increased hot tack can be blown therefrom.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: February 20, 2001
    Assignee: Exxon Research and Engineering Company
    Inventor: Arnold Lustiger
  • Patent number: 6187723
    Abstract: A lubricant composition is described, particularly for engine oils, comprising a base oil of viscosity from 3 to 26 cSt (mm2/s) at 100° C. and an antiwear additive combination comprising (a) an oil soluble or oil dispersible phosphorus-free organo-molybdenum compound, (b) an ashless, sulfur-containing organo-phosphorus compound, and optionally (c) a zinc thiophosphate compound selected from one or more of zinc dialkyldithiophosphate, zinc diaiyldithiophosphate, zinc alkylaiyldithiophosphate and zinc arylalkyldithiophosphate. The molybdenum compound may be a carbamate, e.g., MoDTC but is preferably nitrogen-free, e.g., a carboxylate.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: February 13, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: David Gary Lawton Holt, Patrick Desmond Fraser Vernon, John Ian Atherton
  • Patent number: 6187176
    Abstract: A three stage process for producing high quality white oils, particularly food grade mineral oils from mineral oil distillates. The first reaction stage preferably employs a sulfur resistant hydrotreating catalyst and produces a product suitable for use as a high quality lubricating oil base stock. The second reaction stage preferably employs a hydrogenation/hydrodesulfurization catalyst combined with a sulfur sorbent and produces a product stream which is low in aromatics and which has substantially “nil” sulfur. The final reaction stage employs a selective hydrogenation catalyst that produces a product suitable as a food grade white oil.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: February 13, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Sylvain Hantzer, Alberto Ravella, Ian A. Cody, Darryl P. Klein
  • Patent number: 6183849
    Abstract: A quality composite board can be manufactured by combining natural fibrous material, resin and a waxy hydrocarbonaceous material wherein the waxy hydrocarbonaceous material is a natural, synthetic or petroleum wax containing from greater than 30 wt % to up to 98 wt % oil content.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: February 6, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Alan R. Lindsay, John A. Ciruna
  • Patent number: 6180788
    Abstract: The invention is directed towards a metal complex having the formula LMX1X2. L is a bidentate nitrogen-containing ligand with more than 2 nitrogens. M is copper, silver, or gold. X1 and X2 are independently selected from the group consisting of halogens, hydride, triflate, acetate, trifluoroacetate, perfluorotetraphenylborate, tetrafluoroborate, C1 through C12 alkyl, C1 through C12 alkoxy, C3 through C12 cycloalkyl, C3 through C12 cycloalkoxy, aryl, and any other moiety into which a monomer can insert. Such metal complexes have a tetrahedral or pseudo-tetrahedral structure.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: January 30, 2001
    Assignee: Exxon Research and Engineering Company
    Inventor: Robert T Stibrany
  • Patent number: RE37046
    Abstract: This invention relates to a process of recycling condensate from a hydrocarbon or alcohol synthesis, wherein the condensate comprises water and contaminants such as lower molecular weight hydrocarbons, alcohols, and other oxygenates. A hot gaseous mixture comprising CH4 and steam contacts the condensate so as to strip the contaminants from the condensate. The stripped contaminants, CH4, and steam are separately recovered as a gaseous stream from the remaining purified water. The recovered CH4-containing gaseous stream may be used in synthesis gas (CO/H2) generation processes with the generated synthesis gas then being used in a hydrocarbon synthesis process to produce heavy hydrocarbons.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: February 6, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Henry W. Hildinger, Edwin D. Carlson