Patents Assigned to UOP Inc.
  • Process for mercaptan extraction from olefinic hydrocarbons
    Patent number: 4626341
    Abstract: A process is disclosed for removing mercaptans from highly olefinic feed streams by extraction with an aqueous alkaline solution. The aqueous solution is preferably regenerated by oxidation of extracted mercaptans to disulfides. The invention employs two extraction steps performed on the aqueous solution to limit the passage of olefins or acetylenes into the mercaptan conversion zone and to limit the passage of mercaptans and/or oxygenates into the primary extraction zone.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: December 2, 1986
    Assignee: UOP Inc.
    Inventor: Thomas A. Verachtert
  • Catalytic composite for conversion of hydrocarbons and the method of preparation and use thereof
    Patent number: 4623632
    Abstract: A novel catalytic composite, method of preparation, and process for the conversion of hydrocarbons is disclosed. The novel catalyst comprises a nonacidic zeolite having deposited thereon catalytically effective amounts of a Group VIII metal component and sufficient surface-deposited alkali metal to provide a surface-deposited alkali metal index of at least 10.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: November 18, 1986
    Assignee: Uop Inc.
    Inventors: Susan L. Lambert, Russell W. Johnson, Randy J. Lawson, Tery L. Barr
  • Sulfur dioxide removal from gas streams
    Patent number: 4622213
    Abstract: A process for absorbing sulfur dioxide from a gas stream comprising contacting said gas stream with a slurry of pretreated shale in an aqueous medium wherein the shale acts catalytically to convert the sulfite radical to the sulfate radical.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: November 11, 1986
    Assignee: UOP Inc.
    Inventors: Peter Urban, Edward A. Ginger
  • Qualitative and quantitative analysis using Raman scattering
    Patent number: 4620284
    Abstract: Methods and apparatus are provided for qualitative and quantitative analysis utilizing the Raman effect. Analyses are obtainable without exercise of human judgment or human interpretation. Analyses may be obtained on-line in the field or in a laboratory. A wide range of fluids and solids are capable of rapid routine analysis without major adjustment of equipment. An analysis is obtained by comparing a Raman spectrum of the unknown sample to Raman spectra of samples whose analysis is known. The known Raman spectra are stored in computing means in digital form and the comparison is accomplished by the computing means.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: October 28, 1986
    Assignee: UOP Inc.
    Inventors: Robert P. Schnell, Robert W. Sampson, Ronald F. Pacanowski, Donald J. Bruggema
  • Catalytic composite for conversion of hydrocarbons and the method of preparation
    Patent number: 4619906
    Abstract: A novel catalytic composite, a method of making the composite, and use of the composite is disclosed. The novel catalyst comprises a nonacidic zeolite bound within a support matrix. Additionally, the catalyst comprises catalytically effective amounts of a Group VIII metal component. There is also present within the catalyst sufficient surface-deposited alkali metal to provide a surface-deposited alkali metal index of at least 10. The catalytic composite has utility for the conversion of hydrocarbons and, in particular, has specific utility as a dehydrocyclization catalyst.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: October 28, 1986
    Assignee: UOP Inc.
    Inventors: Susan L. Lambert, Randy J. Lawson, Russell W. Johnson, Tery L. Barr
  • Process for the separation of ortho-nitrotoluene
    Patent number: 4620047
    Abstract: An adsorptive separation process for separating ortho-nitrotoluene from a feed mixture comprising the ortho-isomer and at least one other isomer of nitrotoluene. The process comprises contacting the feed mixture with an adsorbent comprising a type X zeolite, containing at the exchangeable cationic sites cations of metals from Group IA or IIA of the Periodic Table of Elements, selectively adsorbing substantially all of the ortho-nitrotoluene to the substantial exclusion of the remaining isomers, removing the non-adsorbed portion of the feed mixture from contact with the adsorbent, and thereafter recovering high-purity ortho-isomer by desorption with nitrobenzene.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: October 28, 1986
    Assignee: UOP Inc.
    Inventor: Hermann A. Zinnen
  • Membrane separation of hydrocarbons
    Patent number: 4617126
    Abstract: Mixtures of heavy oils and light hydrocarbons may be separated by passing the mixture over a polymeric membrane which comprises a polymer capable of maintaining its integrity in the presence of hydrocarbon compounds at temperature ranging from about ambient to about 100.degree. C. and pressures ranging from about 50 to about 1000 psi. The membranes which possess pore sizes ranging from about 10 to about 500 Angstroms are cast from a solvent solution and recovered.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: October 14, 1986
    Assignee: UOP Inc.
    Inventors: Edward W. Funk, Sudhir S. Kulkarni, Y. Alice Chang
  • Hydrogen circulation for moving bed catalyst transfer systems
    Patent number: 4615792
    Abstract: A system is disclosed for circulating an ancillary hydrogen-rich gas stream through a part of a moving bed hydrocarbon conversion process. The gas stream may be employed in lockhopper systems, catalyst transfer equipment and catalyst treating zones as for reducing the catalyst. The used ancillary gas is discharged into a partitioned vapor-liquid separation vessel. The partially condensed reaction zone effluent stream is discharged into a different chamber of the same vessel. The net off gas stream is withdrawn from the chamber receiving the used ancillary gas to prevent contamination of a recycle gas stream, which is drawn off the other chamber.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: October 7, 1986
    Assignee: UOP Inc.
    Inventor: Arthur R. Greenwood
  • Rotary valve with two seating surfaces for interconnecting conduits
    Patent number: 4614205
    Abstract: A unitary multiport rotary disc valve capable of accomplishing the simultaneous interconnection of a plurality of conduits in accordance with a previously determined cycle, where any conduit communicates with no more than one other conduit at any one cycle step, or valve index position. The conduits to be interconnected are attached to a stationary body, or stator assembly, having channels in it which communicate between the conduits and flow paths in a rotating body, or rotor assembly, which assumes various positions according to the cycle steps and distributes fluid flowing in the conduits in a different manner in each cycle step. In one embodiment, the rotor assembly is comprised of two parallel plates, or discs, and is sandwiched between two biplanar parallel plates which comprise the stator assembly. Crossover pipes extend between the rotor plates.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: September 30, 1986
    Assignee: UOP Inc.
    Inventor: Anil R. Oroskar
  • Rotary valve for interconnecting conduits in three groups
    Patent number: 4614204
    Abstract: A unitary multiport rotary disc valve capable of accomplishing the simultaneous interconnection of a plurality of conduits in accordance with a previously determined cycle, where any conduit communicates with no more than one other conduit at any one valve index position. It is particularly useful where such plurality of conduits may be divided into three separate groups according to their function and it is necessary to interconnect the conduits in accordance with a relationship among the groups. The conduits to be interconnected are attached to the bottom of a discoid stationary body, or stator, having channels in it which communicate between the conduits and flow paths in a discoid rotating body, or rotor, which assumes various positions according to the cycle steps and distributes fluid flowing in the conduits in a different manner in each cycle step.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: September 30, 1986
    Assignee: UOP Inc.
    Inventor: Charles A. Dolejs
  • Dehydrocyclization with nonacidic L zeolite
    Patent number: 4614834
    Abstract: A novel catalyst composite is disclosed as well as a novel method of preparing the composite and a novel use for the composite. The novel composite comprises a nonacidic zeolite, catalytically effective amounts of a Group VIII metal component, and a silica support matrix derived by a high pH gelation of an alkali metal silicate sol. This novel composition has particular utility as a dehydrocyclization catalyst for the conversion of paraffins to aromatic compounds.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: September 30, 1986
    Assignee: UOP Inc.
    Inventors: Susan L. Lambert, Randy J. Lawson, Russell W. Johnson, Jean-Pierre Gilson
  • Process for the oligomerization of olefins and a catalyst thereof
    Patent number: 4613580
    Abstract: Olefins may be oligomerized to a desired oligomer and configuration of the oligomer by utilizing a catalyst which comprises a porous support containing a catalytically effective amount of an hydrate of an iron group metal salt in which the mole ratio of water of hydration to iron group metal is greater than 0.5:1 in combination with a catalytically effective amount of an alkyl aluminum compound and an aluminum halide.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: September 23, 1986
    Assignee: UOP Inc.
    Inventor: Robert R. Frame
  • Coal liquefaction process
    Patent number: 4610776
    Abstract: A coal liquefaction process comprising reacting coal with a hydrocarbonaceous solvent at coal liquefaction conditions in the presence of an oil shale residue catalyst comprising organic and inorganic fractions. The oil shale residue catalyst is derived by heating an oil shale in the presence of an inert gas with respect to the oil shale at a temperature of 500.degree.-825.degree. F.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: September 9, 1986
    Assignee: UOP Inc.
    Inventors: Peter Urban, Lee Hilfman
  • Operation of continuous extraction process
    Patent number: 4609457
    Abstract: Method of operation for a continuous countercurrent extraction zone, to which a charge mixture stream and a solvent stream are continuously supplied and from which an extract stream and a raffinate stream are continuously withdrawn. In one embodiment, the method comprises establishing a recycle stream consisting of a portion of the light phase stream withdrawn from the column, combining the recycle stream with the charge mixture stream, and controlling the streams flowing to and from the column. The combined feed stream to the extraction zone is controlled at a constant flow rate and recycle flow has preference over charge mixture flow, thereby causing charge stream flow to vary inversely with recycle flow. An important feature of the invention resides in adjustment of composition of this total combined feed stream to the extraction zone in order to deal with fluctuations in other parameters.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: September 2, 1986
    Assignee: UOP Inc.
    Inventor: James W. Kilroy
  • Increased strength polymer-blended membranes
    Patent number: 4609468
    Abstract: Polymer blend membranes which possess increased structural strength may be fabricated by preparing a polymer blend membrane comprising a mixture of a phosphoric acid or sulfuric acid and an organic polymer which is at least partially compatible therewith dissolved in a mutually miscible solvent. The resulting polymer blend membrane is then cast upon a porous solid support such as a glass cloth, polysulfone or ceramic and the solvent is allowed to evaporate.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: September 2, 1986
    Assignee: UOP Inc.
    Inventor: Joan A. Cramm
  • Dehydrogenation catalyst compositions and method of preparing same
    Patent number: 4608360
    Abstract: A novel catalytic composite is disclosed. Also disclosed is a use for the novel composite and a method for preparing the same. The catalytic composite comprises a Group VIII, noble metal component, a co-formed IVA metal component, an alkali metal or alkaline earth metal component and an alumina support having a surface area of from 5 to 150 m.sup.2 /g. Additionally the alumina support is such that less than about 18% of the total pore volume of the support is associated with pores having mean diameters of about 300 Angstroms or less and more than about 55% of the total pore volume of the support is associated with pores having mean diameters of about 600 Angstroms or more. The novel catalytic composite has particular utility as a paraffin dehydrogenation catalyst.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: August 26, 1986
    Assignee: UOP Inc.
    Inventors: Hayim Abrevaya, Tamotsu Imai
  • Separation of polar gases from nonpolar gases
    Patent number: 4608060
    Abstract: Polar gases such as hydrogen sulfide, sulfur dioxide and ammonia may be separated from nonpolar gases such as methane, nitrogen, hydrogen or carbon dioxide by passing a mixture of polar and nonpolar gases over the face of a multicomponent membrane at separation conditions. The multicomponent membrane which is used to effect the separation will comprise a mixture of a glycol plasticizer having a molecular weight of from about 200 to about 600 and an organic polymer cast on a porous support. The use of such membranes as exemplified by polyethylene glycol and silicon rubber composited on polysulfone will permit greater selectivity accompanied by a high flux rate in the separation process.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: August 26, 1986
    Assignee: UOP Inc.
    Inventors: Santi Kulprathipanja, Sudhir S. Kulkarni
  • Separation of polar gases from nonpolar gases
    Patent number: 4606740
    Abstract: The separation of polar gases from nonpolar gases may be effected by passing a mixture of nonpolar gases over the face of a multicomponent membrane at separation conditions. The multicomponent membrane which is used to effect the separation will comprise a mixture of a glycol plasticizer having a molecular weight of from about 200 to about 600 and an organic polymer cast on a porous support. The porous support is pretreated prior to casting of the mixture thereon by contact with a polyhydric alcohol whereby the pores of the support are altered, thus adding to the increased permeability of the polar gas.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: August 19, 1986
    Assignee: UOP Inc.
    Inventor: Santi Kulprathipanja
  • Process for separating monoterpenes
    Patent number: 4605783
    Abstract: An adsorptive method of separating alcohols and aldehydes or ketones and alcohols of monoterpenes is disclosed. The method uses an X-type zeolite containing sodium and potassium cations to selectively adsorb the alcohols thereby allowing recovery of an aldehyde or ketone raffinate stream and, after desorption, an alcohol extract stream. The method is suitable for feed mixtures containing individual or multiple monoterpenoid components.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: August 12, 1986
    Assignee: UOP Inc.
    Inventor: Hermann A. Zinnen
  • High temperature thermoset terpolymers
    Patent number: 4604438
    Abstract: Novel high temperature thermoset terpolymers may be synthesized by reacting an alpha-substituted olefin, an alpha,beta-disubstituted olefin and a dual function monomer followed by cross-linking the resultant polymer with a low molecular weight multifunctional amine as the cross-linking agent in the presence of a catalyst. The resulting cross-linking agent is then cured at an elevated temperature to provide the desired terpolymer. This compound will possess desirable properties such as a low dielectric constant which renders it applicable for use as circuit board laminates.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: August 5, 1986
    Assignee: UOP Inc.
    Inventors: Allyson J. Beuhler, James A. Wrezel