Patents Assigned to UOP Inc.
  • Patent number: 4650783
    Abstract: This invention relates to a molecular sieve comprising silicalite in a phosphorus modified alumina matrix, the precursor of the molecular sieve comprising silicalite powder dispersed in an alumina hydrosol commingled with a phosphorus containing compound, the phosphorus to aluminum molar ratio in the molecular sieve being from 1:1 to 1:100.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: March 17, 1987
    Assignee: UOP Inc.
    Inventors: Tai-Hsiang Chao, Michael T. Cleary
  • Patent number: 4648959
    Abstract: A process is disclosed for hydrotreating olefin-containing hydrocarbon streams for the purpose of producing very low olefin concentrations without the use of high pressure hydrotreating. The process is useful in preparing feeds to adsorptive separation zones. In the process the effluent of a hydrotreating reaction zone is passed into a stripping column. Preferably, substantially all liquid flowing downward through the lower section of the column is withdrawn and then passed through a hydrogenation reactor. The hydrogenation reactor effluent is passed into the bottom of the column to allow removal of dissolved hydrogen.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: March 10, 1987
    Assignee: UOP Inc.
    Inventors: Raymond R. Herber, Angelo P. Furfaro
  • Patent number: 4647367
    Abstract: An antifouling compound comprising a phthalocyanine compound is disclosed for use in high temperature coke producing petroleum reactions wherein said coke is unwanted and acts as a fouling agent in the associated reaction apparatus.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: March 3, 1987
    Assignee: UOP Inc.
    Inventors: Peter Urban, Frank Stolfa
  • Patent number: 4647704
    Abstract: Hydrocracking of lignin in the presence of a supported tungsten-nickel catalyst affords phenolic compounds in higher yield and with greater selectivity then previously obtainable. Mildly acidic supports, such as alumina, alumina-silica, aluminum phosphate, and silica-aluminum phosphate, have been found to be particularly effective. When the hydrocracking is done in the presence of water, a lower aliphatic alcohol, or a Lewis acid such as ferrous chloride, increased yields of both cresols and C.sub.6 -C.sub.8 and C.sub.6 -C.sub.9 phenolics are obtained.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: March 3, 1987
    Assignee: UOP Inc.
    Inventors: Dusan J. Engel, Karl Z. Steigleder
  • Patent number: 4642402
    Abstract: A process is disclosed for the dehydrocyclodimerization of light aliphatic hydrocarbons into aromatic hydrocarbons. The process provides improved per pass conversion and an improved yield structure by increasing the relative percentage of xylene which is produced as compared to benzene. This improvement is achieved by recycling benzene recovered from the reaction zone effluent to the reaction zone.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: February 10, 1987
    Assignee: UOP Inc.
    Inventor: Robert H. Jensen
  • Patent number: 4642406
    Abstract: A process is disclosed for the production of high quality benzene and a desired xylene isomer, preferably paraxylene, from a mixture of C.sub.7 -plus alkylaromatic hydrocarbons. The desired xylene isomer is recovered by absorptive separation from a stream of two or three xylene isomers. The resultant isomer-depleted stream is passed into a transalkylation zone together with both feed and recycled toluene and C.sub.9 aromatic hydrocarbons instead of being passed into a xylene isomerization zone. Benzene and xylenes are fractionated from the transalkylation zone effluent stream, with the xylenes being passed into the absorptive separation zone. A nonmetal catalyst is employed in the transalkylation zone, which must be operated at high severity (high temperature) conditions.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: February 10, 1987
    Assignee: UOP Inc.
    Inventor: Robert J. Schmidt
  • Patent number: 4642397
    Abstract: This invention comprises a process for separating 2,4-dinitrotoluene from a feed mixture comprising 2,4-dinitrotoluene and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising an X or Y type zeolite cation exchanged with a cation in the group K, Na, Ca, Ba, Li or Mg, thereby selectively adsorbing the 2,4-dinitrotoluene. The remainder of the feed mixture is removed from the adsorbent and the 2,4-dinitrotoluene is recovered by desorption at desorption conditions with a desorbent material comprising a C.sub.3 to C.sub.5 alcohol, a ketone, toluene, an ester or a nitrocompound.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: February 10, 1987
    Assignee: UOP Inc.
    Inventors: Hermann A. Zinnen, Thad S. Franczyk
  • Patent number: 4637266
    Abstract: Process for sampling particulate matter in a downwardly movable bed thereof which is successively contacted by two different process gases, the second of which is moving upwardly, in such a manner that the particulate matter sampled will be fully representative of particles which have been fully contacted by the first process gas but which have not been contacted by the upwardly moving second process gas. The particulate matter is passed downwardly in the shape of an annular bed through a first annular treatment zone while the major portion of the first process gas is passed through the annular bed in a radially inward direction. The annular bed is then passed downwardly along with a small amount of the first process gas from the first treatment zone through an elongated transition zone and into the radially outermost upper portion of a generally cylindrical second treatment zone.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: January 20, 1987
    Assignee: UOP Inc.
    Inventor: Arthur R. Greenwood
  • Patent number: 4636488
    Abstract: A novel hydrocarbon alkylation catalyst is disclosed comprising a mineral acid and an ether component. A process for utilizing the novel catalyst is also disclosed.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: January 13, 1987
    Assignee: UOP Inc.
    Inventors: Tamotsu Imai, Joseph A. Kocal
  • Patent number: 4636483
    Abstract: Superior tolerance to catalyst coking is obtained with a catalytic composite comprising a gallium component and a crystalline aluminosilicate incorporated with a phorphorus containing alumina. A five-fold reduction in the coke content of the spent catalyst of the instant invention is observed which is directly attributable to the phosphorus containing alumina. A novel method of preparing this catalyst is presented, along with a novel process for the dehydrocyclodimerization of C.sub.2 -C.sub.5 aliphatic hydrocarbons.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: January 13, 1987
    Assignee: UOP Inc.
    Inventors: Solveg S. Kjell, Tai-Hsiang Chao, Nancy J. Flint, Arthur A. Foutsitzis
  • Patent number: 4636314
    Abstract: Polymer blended membranes which comprise a blend of a compound such as a heteropoly acid or salt thereof and a polymer which is at least partially compatible with said compound, said blend containing a multiplicity of electrically conductive particles which form a portion of said membrane may be prepared by admixing the polymer and the acid or salt in a mutually miscible solvent. Thereafter, the electrically conductive particles, the size of which is sufficient so that the surfaces of the particles are coexistent with or extend beyond the surfaces of the membrane, may be added to the solution or, alternatively, the solution may be cast onto a casting surface and the particles added in a manner so as to ensure a uniform distribution of the particles throughout the solution. After evaporation of the solvent, the resulting thin film membrane may then be recovered and used in a gas separation apparatus or in a gas sensor apparatus.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: January 13, 1987
    Assignee: UOP Inc.
    Inventors: Allyson J. Beuhler, Anthony J. Polak
  • Patent number: 4633904
    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, and where movement of the valve between index positions takes place with a minimum of hydraulic shock. The conduits to be interconnected are attached to the bottom of a discoid stationary body, or stator, having ports 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: January 6, 1987
    Assignee: UOP Inc.
    Inventors: Gary M. Schumann, David L. Schick
  • Patent number: 4634799
    Abstract: A process flow for hydrogen-producing processes such as reforming or dehydrocyclodimerization is disclosed. A portion of a C.sub.3 or C.sub.4 feed stream is flashed to provide reflux cooling for a product recovery fractionation column. The cool overhead of this column and a second portion of the feed stream are used to cool the still uncondensed portion of the partially condensed reaction zone effluent stream prior to passage of this uncondensed material into a final low temperature separation stage. A second feature is the reboiling of a fractionation column with hot compressed gas to perform interstage cooling in the product recovery compression section.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: January 6, 1987
    Assignee: UOP Inc.
    Inventors: Edward C. Haun, David A. Hamm
  • Patent number: 4634801
    Abstract: A novel hydrocarbon alkylation catalyst is disclosed comprising a mineral acid and an ether component. A process for utilizing the novel catalyst is also disclosed.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: January 6, 1987
    Assignee: UOP Inc.
    Inventors: Joseph A. Kocal, Tamotsu Imai
  • Patent number: 4632749
    Abstract: A process is disclosed for the fluid catalytic cracking of a hydrocarbon oil which comprises contacting said oil at fluid catalytic cracking conditions with a catalyst consisting of silica, a rare earth metal component and a dealuminated zeolitic aluminosilicate having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 4.5 to 35, the essential X-ray powder diffraction pattern of zeolite Y, an ion exchange capacity of not greater than 0.070, a unit cell dimension a.sub.o of from 24.20 to 24.45 A, a surface area of at least 350 m.sup.2 /g (B-E-T), a sorptive capacity for water vapor at 25.degree. C. and a p/p.sub.o value of 0.10 of less than 4.00 weight percent and a Residual Butanol Test value of not more than 0.40 weight percent.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: December 30, 1986
    Assignee: UOP Inc.
    Inventor: Lee Hilfman
  • Patent number: 4633018
    Abstract: This invention comprises a process for separating 2,4-toluenediamine from a feed mixture comprising 2,4-toluenediamine and at least one isomer thereof, which process comprises contacting the mixture at adsorption conditions with an adsorbent comprising a Y type zeolite cation-exchanged with a Ni or Ca cation or an X type zeolite cation-exchanged with a cation from the group Na, Ni and K, thereby selectively adsorbing the 2,4-toluenediamine or an L type zeolite cation-exchanged with a K cation, or an X type zeolite cation exchanged with a Ba cation, thereby selectively adsorbing the 2,6-toluenediamine. The remainder of the feed mixture is removed from the adsorbent and the adsorbed toluenediamine isomer is recovered by desorption at desorption conditions with a desorbent material comprising a lower alcohol or an amine.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: December 30, 1986
    Assignee: UOP Inc.
    Inventor: Hermann A. Zinnen
  • Patent number: 4632149
    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 the bottom of a discoid stationery 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: December 30, 1986
    Assignee: UOP Inc.
    Inventors: Anil R. Oroskar, George Mack
  • Patent number: 4629717
    Abstract: A novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m.sup.2 /gm is defined. The composite is prepared by admixing an alumina hydrosol with a phosphorus-containing compound to form a phosphorus-modified sol and gelling said admixture. The phosphorus-modified alumina composite is useful as a catalyst support for various catalytic reactions.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: December 16, 1986
    Assignee: UOP Inc.
    Inventor: Tai-Hsiang Chao
  • Patent number: 4629551
    Abstract: A novel catalytic composite for the conversion of hydrocarbons is disclosed. The catalytic composite comprises a refractory inorganic oxide, a first uniform dispersion of a platinum component and a rhenium component, and a second dispersion of an indium component thereover. The composite further comprises a halogen component and a sulfur component. In addition to a novel catalytic composite there is also disclosed a method of preparing the composite and a novel process for the use of the composite.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: December 16, 1986
    Assignee: UOP Inc.
    Inventors: George J. Antos, Li Wang
  • Patent number: 4625763
    Abstract: A unitary disc-axial multiport 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 hollow stationary body, or stator assembly, which is comprised of two sections, or elements, one being cylindrical in exterior form and the other having a disc-like form with a central opening and being joined to the cylindrical element at one end in a flange-like manner. There are fluid flow paths in a rotating body, or rotor assembly, which is located partially inside the stator assembly, extending through the central opening in the discular element of the stator. The form of the rotor assembly is similar to that of the stator assembly.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: December 2, 1986
    Assignee: UOP Inc.
    Inventors: David L. Schick, Gary M. Schumann, Charles A. Dolejs