Patents Represented by Attorney J. F. Powers, Jr.
  • Patent number: 4549031
    Abstract: A process for the direct conversion of an aqueous solution of carbohydrates to hydrocarbons where a feed consisting essentially of an aqueous solution of carbohydrates is passed over a crystalline aluminosilicate zeolite catalyst having a constraint index of 1 to 12 and a silica/alumina molar ratio of about 12. An important feature of this invention is the short amount of time the aqueous carbohydrate solution is in contact with the catalyst.
    Type: Grant
    Filed: November 8, 1984
    Date of Patent: October 22, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Nai Y. Chen, Leonard R. Koenig
  • Patent number: 4542252
    Abstract: The operating performance of a multi-stage fixed bed adiabatic reactor system with interstage cooling designed for the exothermic conversion of methanol to light olefins is improved by cofeeding small quantities of light olefins with the methanol feed whereby a more controllable operation is achieved. Catalyst activity and cycle length also improves significantly. The light olefins can be produced in situ during dehydration.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: September 17, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Kenneth R. Graziani, Ajit V. Sapre
  • Patent number: 4532225
    Abstract: A method of incorporating metals onto a crystalline aluminosilicate zeolite support comprises first depositing a metal which forms bonds with the zeolite and subsequently depositing a catalytically active metal into the zeolite which becomes associated with the first metal. The catalytically active metals may be introduced by decomposition of an organometallic complex which contains pi-electron donating ligands.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: July 30, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Ying-Yen P. Tsao, Stephen S. Wong
  • Patent number: 4524232
    Abstract: A combination process for producing high viscosity index lubes from light olefins is provided wherein light olefins are first passed over a small pore zeolite and the liquid product therefrom is then processed over an intermediate pore zeolite to provide a lubricating oil with a higher viscosity, high Viscosity Index and low pour point in greater yield than obtained with either of the catalysts alone.
    Type: Grant
    Filed: January 4, 1984
    Date of Patent: June 18, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Arthur W. Chester, William E. Garwood, Stanley J. Lucki, Samuel A. Tabak
  • Patent number: 4522705
    Abstract: Octane and total yield improvement in catalytic cracking of petroleum fractions under cracking conditions can be obtained by adding to conventional cracking catalysts small amounts of an additive catalyst comprising a class of zeolites characterized by a silica to alumina mole ratio greater than 5 and a Constraint Index of 1 to 12 wherein the zeolite additive catalyst is prepared via in-situ crystallization of preformed aggregates.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: June 11, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Pochen Chu, Gary M. Pasquale
  • Patent number: 4522703
    Abstract: This invention provides a process for upgrading heavy hydrocarbon oil by thermal treatment which in one preferred embodiment involves heating a petroleum residuum type of heavy oil feedstock at a temperature of 450.degree.-550.degree. C. and a pressure of 10-200 psi for a period of about 0.1-1 hour to convert at least 60 weight percent of the heavy oil to gasoline and gas oil range products, and additionally providing a residual tar fraction which has a fusion temperature below about 160.degree. C.About 1-10 weight percent of solid carbonaceous fines are incorporated in the feedstock to suppress the deposition of coke in the thermal treatment zone.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: June 11, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Tsoung Y. Yan, Nai Y. Chen
  • Patent number: 4523046
    Abstract: Gasoline product yield is enhanced in a fixed bed methanol-to-gasoline process by splitting the conversion reactor into a series of smaller conversion reactors such that the total amount of catalyst normally present in the single conversion reactor is present in equal quantities in the smaller conversion reactors. The smaller conversion reactors operate sequentially with the next conversion reactor beginning operation only when the preceeding conversion reactor is catalytically exhausted. The by-passing of one or more of the catalyst beds prevents premature deactivation of the catalyst beds downstream of the point at which the reaction products are removed.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: June 11, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Ronald M. Gould, Sergei Yurchak
  • Patent number: 4518708
    Abstract: In a process for treatment of a fresh iridium-containing catalyst, the improvement consists of a three step procedure in sequence including treatment with oxygen, treatment with hydrogen chloride, and treatment with a reducing agent such as hydrogen.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: May 21, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Sowmithri Krishnamurthy, George R. Landolt, Hans J. Schoennagel
  • 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: 4508840
    Abstract: Preparation of the silica and alumina matrix components of a zeolite cracking catalyst while intimately mixing at a pH of 3.0 to about 4.5 results in a selective catalyst of high density and low pore volume. The coke produced during cracking emits lower amounts of sulfur during regeneration of tha catalyst translating to reduced sulfur oxide stack emissions.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: April 2, 1985
    Assignee: Mobil Oil Corporation
    Inventors: William E. Cormier, Jr., Gary M. Pasquale, William A. Stover
  • Patent number: 4504377
    Abstract: This invention provides a two-stage visbreaking process for increasing the production of a visbroken hydrocarbon product from heavy oil feedstock, which meets heating oil viscosity specifications with little or no blending with external cutter stocks.The second stage visbreaking is conducted at a relatively high Severity in contact with a fluidized bed of particulate solids.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: March 12, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Paul Shu, Tsoung Y. Yan
  • Patent number: 4504172
    Abstract: A caisson shield for the protection of an offshore production platform and, more particularly, a caisson shield for use in an arctic environment for the protection of the offshore structure in iceberg-infested waters which is capable of absorbing the destructive forces of an impact produced by a large iceberg. The caisson shield consists of an essentially annular concrete structure encircling at least the submerged support section of the offshore production platform including vertically upstanding concentrically spaced, annular side walls, a horizontal slab base resting on the marine bottom on which the side walls are supported, and a slab top supported on the side walls, and including annularly spaced internal radial partition walls whereby the entire overall caisson shield structure provides a generally toroidal configuration incorporating a plurality of closed compartments.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: March 12, 1985
    Assignee: Mobil Oil Corporation
    Inventors: John D. Clinton, Gerhard H. Reusswig
  • Patent number: 4504690
    Abstract: A method is provided for treating modified ZSM-5 type zeolite catalysts with a vapor phase organophosphorus reagent such as trimethylphosphite or dimethylmethylphosphonate in order to improve the para-selective properties of such catalysts for the conversion of aromatic materials. The modified zeolites so treated are those which contain a minor proportion of a difficultly reducible oxide such as magnesium oxide, calcium oxide and/or phosphorus oxide. Such catalyst compositions can be used in alkylation, transalkylation or disproportionation processes to provide alkylated aromatic product mixtures having exceptionally high concentrations of the para-dialkylbenzene isomer.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: March 12, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Nancy P. Forbus, Warren W. Kaeding
  • Patent number: 4500503
    Abstract: A series of transition metal complexes, having stability at relatively high pH, have been utilized as templates for the synthesis of mordenite type zeolites.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: February 19, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Lillian A. Rankel, Ernest W. Valyocsik
  • Patent number: 4495166
    Abstract: A novel process for the preparation of ZSM-5 and ZSM-11 utilizing a mixture of both quaternary ammonium ions and amines in the forming solution is disclosed in order to enhance the rate of crystallization.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: January 22, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Robert B. Calvert, Louis D. Rollmann
  • Patent number: 4493764
    Abstract: There is provided, in accordance with the present invention, a catalyst composition made up of a mixture of two components, one component comprising a minor proportion of platinum and rhenium on a support and the second component comprising a minor proportion of iridium and rhenium on a separate support. A process for reforming a charge stock, such as naphtha, utilizing such catalyst is also provided.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: January 15, 1985
    Assignee: Mobil Oil Corporation
    Inventors: Charles T. Kresge, Sowmithri Krishnamurthy, William D. McHale
  • Patent number: 4489984
    Abstract: The present invention provides an improved process for the in-situ recovery of mineral values, particularly uranium, from subterranean deposits that exhibit heterogeneous permeabilities in the formation zones. Aqueous solutions of thickening agents or viscosity building agents are utilized to control the mobility of the leaching solutions as they traverse the subterranean formation to solubilize the mineral values therein.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: December 25, 1984
    Assignee: Mobil Oil Corporation
    Inventor: Joseph G. Savins
  • Patent number: 4486125
    Abstract: A modular and floatable offshore exploration and production platform system for use in shallow arctic waters is disclosed. A concrete base member is floated to the exploration or production site, and ballated into a predredged cavity. The cavity and base are sized to provide a stable horizontal base 30 feet below the mean water/ice plane. An exploration or production platform having a massive steel base is floated to the site and ballasted into position on the base. Together, the platform, base and ballast provide a massive gravity structure that is capable of resisting large ice and wave forces that impinge on the structure. The steel platform has a sloping hourglass profile to deflect horizontal ice loads vertically, and convert the horizontal load to a vertical tensile stress, which assists in breaking the ice as it advances toward the structure.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: December 4, 1984
    Assignee: Mobil Oil Corporation
    Inventor: Gerhard H. Reusswig
  • Patent number: 4482773
    Abstract: Isomerization of xylene in admixture with ethylbenzene by contact with a zeolite catalyst such as ZSM-5 is improved by use of a zeolite having a catalyst particle size of at least 1 micron and having incorporated thereon two metals such as platinum and magnesium.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: November 13, 1984
    Assignee: Mobil Oil Corporation
    Inventors: Yung F. Chu, Fritz A. Smith, Arthur W. Chester
  • Patent number: 4481101
    Abstract: A process for demetallation and desulfurization of resids by visbreaking an admixture of resids, particulate solids, and steam and/or hydrogen, and then subjecting the visbroken mixture to high temperature settling and separating to provide a first vapor product, a liquid product, and a recycled underflow solids stream. The process further comprises coking the liquid product to produce a second vapor product and coke and then distilling the combined first and second vapor products to yield a plurality of demetallized and desulfurized liquid hydrocarbon products. A fraction of the recycled underflow from the settler/separator is removed as a purge stream and burned for recovery of heat and metals. If hydrogen is used in the visbreaking step, the first vapor product is condensed to separate the hydrogen for recycling.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: November 6, 1984
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung Y. Yan