Patents Examined by Delbert E. Gantz
  • Patent number: 4518489
    Abstract: Basic nitrogen-containing compounds are removed from mineral oil, such as shale oil, by extraction with an immiscible aqueous phase containing an acid gas such as carbon dioxide. Effectiveness of the separation is proportional to the partial pressure of the gas. In one embodiment, a waste gas stream is used as the CO.sub.2 -containing gas.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: May 21, 1985
    Assignee: Phillips Petroleum Company
    Inventor: Donald O. Hitzman
  • Patent number: 4518485
    Abstract: A process for dewaxing a hydrocarbon feedstock with a relatively high pour point and containing paraffins selected from the group of normal paraffins and slightly branched paraffins and sulfur and nitrogen compounds which comprises subjecting said oil to hydrotreating in a hydrotreating zone operated at hydrotreating conditions sufficient to remove at least a portion of said sulfur and nitrogen compounds and subjecting said hydrotreated oil to catalytic dewaxing by contacting said oil with a catalyst comprising zeolite beta having a silica/alumina ratio of at least 30:1 and a hydrogenation/dehydrogenation component under isomerization conditions.
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: May 21, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Rene B. LaPierre, Randall D. Partridge, Nai Y. Chen, Stephen S. Wong
  • Patent number: 4518482
    Abstract: A pitch suitable for carbon fiber manufacture features a pitch having a weight content of between 80 and 100 percent toluene insolubles. The pitch is derived from a deasphaltenated fraction of a feedstock. The pitch is characterized as being relatively free of impurities and ash. The pitch can be spun directly into carbon fibers.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: May 21, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ghazi Dickakian
  • Patent number: 4518487
    Abstract: A delayed coking process in which the coker furnace feed is free of conventional heavy recycle. Elimination of this material from the coker furnace feed produces, based on fresh feed to the process, increased liquids and decreased coke. Coker furnace feed is initially combined with a diluent hydrocarbon having a lower boiling range than conventional heavy coker recycle and then transferred to the coker furnace. The hydrocarbon diluent is much lower in coke-forming components than the heavy recycle which is normally combined with the fresh feed and fed to the coker furnace.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: May 21, 1985
    Assignee: Conoco Inc.
    Inventors: Harlan G. Graf, Harry R. Janssen
  • Patent number: 4518490
    Abstract: Described is a process for removing arsenic from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon.Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic bound to it from contacting petroliferous liquid as described above and involves:a. treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10 and,b. separating the solids and liquids from each other. Preferably the regeneration treatment is in two steps wherein step (a) is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, steps (a) and (b) are repeated using a bicarbonate.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: May 21, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Richard H. Fish
  • Patent number: 4518709
    Abstract: A coal liquefaction hydrotreating catalyst composition comprising particles of Component A consisting essentially of at least one Group VIB metal component supported on refractory inorganic oxide and particles of Component B consisting essentially of either cobalt and/or nickel component supported on a refractory inorganic oxide.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: May 21, 1985
    Assignee: Standard Oil Company (Indiana)
    Inventor: Regis J. Pellet
  • Patent number: 4518481
    Abstract: An oxidation-resistant hydrocarbon oil composition is made by catalytically hydrogen-refining under relatively severe conditions a hydrocarbon oil basestock boiling in the lube oil boiling range and separately catalytically hydrogen-refining under relatively mild conditions a hydrocarbon fraction boiling in the lube oil range and having an aniline point exceeding 60.degree. C. and a sulfur content of at least 2.0 wt %. The resulting severely-refined basestock has a sulfur content not greater than 0.10 wt % and the resulting mildly-refined fraction has a sulfur content of at least 1.0 wt %, and the desired oxidation resistant composition is a blend comprising 85 to 99.9 wt % of the former and 15 to 0.1 wt % of the latter.
    Type: Grant
    Filed: August 10, 1983
    Date of Patent: May 21, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Pierre D. Marin
  • Patent number: 4517073
    Abstract: A hydrocracking process, of especial use in the production of a relatively high yield of middle distillate products along with a smaller but still significant yield of gasoline from high boiling gas oils and the like, comprises contacting a gas oil or other hydrocarbon feedstock under hydrocracking conditions with a novel catalyst comprising one or more hydrogenation components on a support material comprising, in combination, a dispersion of silica-alumina in alumina and a zeolite of the Y crystalline structure but having a silica-to-alumina ratio above about 6.0.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: May 14, 1985
    Assignee: Union Oil Company of California
    Inventors: John W. Ward, Timothy L. Carlson
  • Patent number: 4517072
    Abstract: The present invention relates to a process for decreasing and modifying the quinoline-insoluble content (Q.I.) of coal-tar materials; and comprises extracting the coal-tar material with a solvent, where the solvent contains at least one of n-methyl-2-pyrrolidone and the wash oil fraction of coal-tar distillate. Pitches with a diminished Q.I. content, lower viscosity and lower average Q.I. particle size, may be prepared from coal-tar materials which have been so treated.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: May 14, 1985
    Assignee: Domtar Inc.
    Inventors: Samuel Cukier, Henry A. F. L. Kremer
  • Patent number: 4517395
    Abstract: A process for the selective hydrogenation of hydrocarbons having three and more carbon atoms and several double bonds or with triple bonds in monoene-containing hydrocarbon mixtures is described. These compounds are selectively hydrogenated to monoenes in a practically quantitative fashion. Before beginning the hydrogenation, a small amount of carbon monoxide and once to twice the stoichiometric quantity of hydrogen are homogeneously dissolved in the hydrocarbon mixture. The mixture is hydrogenated as a homogeneous liquid phase on a fixed palladium catalyst under a moderately high pressure and at a moderately high temperature. No isomerization can be found in the monoenes and no side reactions or secondary reactions occur.
    Type: Grant
    Filed: November 2, 1982
    Date of Patent: May 14, 1985
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Fritz Obenaus, Franz Nierlich, Otto Reitemeyer, Bernhard Scholz
  • Patent number: 4517074
    Abstract: A hydrocarbon conversion catalyst useful for hydrocracking hydrocarbons to more valuable products comprises one or more hydrogenation components supported on a base containing (1) a crystalline aluminosilicate zeolite having activity for cracking hydrocarbons and (2) a dispersion of silica-alumina in an alumina matrix.
    Type: Grant
    Filed: September 13, 1983
    Date of Patent: May 14, 1985
    Assignee: Union Oil Company of California
    Inventor: John W. Ward
  • Patent number: 4517077
    Abstract: Petroleum-derived feedstocks are treated at elevated temperatures and pressures in the presence of hydrogen and in contact with a bed of porous catalytic particles. In accordance with the invention, each of the catalytic particles is specially shaped as a cylinder of polylobate cross-section having bluntly rounded, concave, interlobular interstices and in conformity with a selected combination of values of three defining parameters. The particle shape is further characterized as being substantially straight-sided and as having a geometric surface-to-volume ratio in the range of about 40 to about 95 in.sup.2 /in.sub.3. When the catalyst particle cross-section is selected to be circumscribed by a rectangle, the shorter side of the rectangle is about 70% as long as the longer side of the rectangle for all preferred combinations of values of the defining radial parameters.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: May 14, 1985
    Assignee: Katalco Corporation
    Inventor: Porter Clements
  • Patent number: 4517398
    Abstract: A method for converting methane to higher hydrocarbon products by contacting, at conditions to convert said hydrocarbons, at least one reducible oxide of at least one metal, associated with a hydroxylated magnesia support (that is, magnesia derived from magnesium hydroxide or a magnesium-containing component contacted with hydroxyl-containing material), which support is calcined prior to the addition of the reducible oxide.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: May 14, 1985
    Assignee: Atlantic Richfield Company
    Inventor: John A. Sofranko
  • Patent number: 4517399
    Abstract: An improved process for the production of high viscosity lubricating oils obtained by reacting olefins over ZSM-5 type zeolites at elevated temperatures and pressures in order to obtain a liquid product and thereafter recovering a lube oil fraction from said liquid product is disclosed. The improvement resides in the use of large crystal ZSM-5 which has been found to enhance the viscosity index of lubes produced from olefins.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: May 14, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Arthur W. Chester, William E. Garwood, Albert B. Schwartz
  • Patent number: 4517397
    Abstract: Disclosed is a catalyst for the oxidative dimerization of toluene, comprising a composition represented by the general formula:Tl.sub.l M.sub.a M'.sub.b O.sub.cwhereinM represents at least one element selected from the group consisting of beryllium, magnesium, calcium, strontium and barium; M' represents at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, titanium, zirconium, hafnium, niobium, tantalum, zinc, aluminum, gallium, indium and antimony;a is 0.05 to 15;b is 0.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: May 14, 1985
    Assignee: Kureha Kaguku Kogyo Kabushiki Kaisha
    Inventors: Takashi Terauchi, Koji Sato, Shoichi Hoshi
  • Patent number: 4517075
    Abstract: A process is provided for conducting organic compound conversion over a catalyst comprising a high silica crystalline zeolite which has been treated by contact with aluminum chloride vapor.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: May 14, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Ralph M. Dessau, George T. Kerr
  • Patent number: 4515684
    Abstract: There are provided a process and apparatus for the reclamation of oil from emulsified mixtures of oil, water and particulate solids. Basic to the process is the introduction of the emulsified mixture to undergo reclamation into a settler providing an internal mixing centerwell in communication with a surrounding settling tank at a first temperature. Typically, the surrounding settling tank consists of a cylindrical zone and a conical zone. At a base of the settling zone is an exhaust for sludge and, if desired, water. At the opposed or upper end of the settling zone is a clarified-oil outlet, which is preferably in the form of an annular, peripheral weir. The mixing centerwell has an inlet and outlet for flow of a heating fluid, typically steam; or of a cooling fluid, typically water, therethrough. The emulsion and demulsifying agent are added to the central mixing zone. Agitation is substantially confined thereto. Operation may be on a batch, semi-continuous or continuous basis.
    Type: Grant
    Filed: October 26, 1983
    Date of Patent: May 7, 1985
    Assignee: CBM-Oil Reclamation Systems, Inc.
    Inventor: Edward G. Brown
  • Patent number: 4515685
    Abstract: Herein are disclosed a method and apparatus whereby all petroleums and/or related materials, including natural materials (such as, petroleum gas, crude oils, bitumens, crude oils from oil sands and oil shales, tars from sands, etc.), fraction or fractions derived from said natural materials, and refinery streams and products, are refined and separated to remove their asphaltic constituents (asphaltenes, resins, etc.) and/or nonhydrocarbon constituents (metals, heteroatoms, etc.), by contacting said petroleums and/or said related materials with added asphaltenes, precipitating said constituents together with said added asphaltenes, and then separating the mixture of the resultant precipitates and said added asphaltenes to recover an oil (and/or gas) having a reduced concentration of said constituents.
    Type: Grant
    Filed: May 8, 1984
    Date of Patent: May 7, 1985
    Inventor: George C. Yeh
  • Patent number: 4515681
    Abstract: It has been discovered that the pour point and wax content of waxy hydrocarbon oils, either natural or derived from synthetic sources such as tar sands, shale oil, etc., preferably natural waxy petroleum oils, most preferably waxy lube, transformer, specialty oils and waxy fuels such as kerosene or jet fuel, can be effectively reduced under standard catalytic dewaxing conditions using an aluminosilicate catalyst with very low crystallinity (VLC), as measured by x-ray diffraction. These VLC materials are derived from crystalline aluminosilicate zeolites which will not themselves reduce the pour point and wax content of waxy oils by the thermal decomposition of said zeolites following their exchange with cations which yield hydroxyl groups during the thermal decomposition step.
    Type: Grant
    Filed: September 8, 1982
    Date of Patent: May 7, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Ian A. Cody
  • Patent number: 4515678
    Abstract: Blast furnace flue dust is used as a catalyst in a process for the hydrogenation of coal. A flowable mixture of finely divided coal particles and liquid hydrocarbons is brought to high pressure and to reaction temperature. The mixture is hydrogenated with hydrogen in the presence of blast furnace dust as a hydrogenation catalyst. The cost-effective hydrogenation catalyst is reused profitably subsequent to application in the coal hydrogenation process.Gaseous products are separated from liquid and solid reaction products. Liquid products are vaporized and are fractionated under atmospheric pressure and under vacuum. Hydrogen for use in the hydrogenation is produced by partial oxidation of the residue, and the catalyst is deposited as slag, which is returned to the blast furnace.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: May 7, 1985
    Assignee: Linde Aktiengesellschaft
    Inventors: Hans J. Wernicke, Heinz Zimmerman