Patents Represented by Attorney Kenneth R. Priem
  • Patent number: 5716896
    Abstract: Disclosed is a method for producing alkyl tertiary alkyl ethers which comprises reacting t-butanol with an alkanol in the presence of a catalyst which exhibits extended life comprising .beta.-zeolite modified with one or more metals selected from the group consisting of Group IA and Group IIIB of the Periodic Table and continuously contacting said alkanol and t-butanol in a molar amount from about 10:1 to 1:10 over said zeolite catalyst at a temperature of about 20.degree. C. to about 250.degree. C. and a pressure of about atmospheric to about 1000 psig.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: February 10, 1998
    Inventors: John Frederick Knifton, Pei-Shing Eugene Dai
  • Patent number: 5709468
    Abstract: Steam quality at both outlets of an impact T-Junction is equalized by a static mixer having corrugated lamella plates immediately adjacent the inlet leg to the junction causing substantial homogenization of the liquid and vapor phases of wet steam entering the junction so that the steam exiting both outlet legs of the junction will have substantially the same quality as the steam entering the junction.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: January 20, 1998
    Assignee: Texaco Group, Inc.
    Inventors: Edward Anderson Woerheide, James Raymond Stoy, Mark Timothy Rubel
  • Patent number: 5637778
    Abstract: Disclosed is a one-step method for synthesis of methyl tertiary butyl ether, diisopropyl ether and isopropyl ether from crude streams containing acetone, methanol and t-butyl alcohol which comprises reacting an acetone-rich feed over a bifunctional catalyst comprising 5-45% by weight of a catalyst consisting essentially of a hydrogenation catalyst selected from the group consisting of one or more metals selected from the group consisting of IB, VIB or VIII of the Periodic Table and a heteropoly acid on a 55%-95% of the total weight of the catalyst of a support comprising a compound selected from the group consisting of:a. a metal phosphate;b. 5 to 95% by weight metal phosphate supported on 95 to 5 wt % Group III or IV oxide; andc. a large pore silicoaluminophosphate.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: June 10, 1997
    Assignee: Texaco Chemical Inc.
    Inventors: Robert J. Taylor, Jr., Pei-Shing E. Dai, John F. Knifton, Bobby R. Martin
  • Patent number: 5632336
    Abstract: A method is provided for increasing the rate of injection of flooding fluids into injection wells. A slug of polar solvent or a mixture of polar solvent and non-aqueous flooding fluid is injected into the injection well to displace aqueous and hydrocarbon liquids in the rock surrounding the injection well. Thereafter, the solvent is removed from the vicinity of the injection well by flooding fluid. The process may be repeated following each time water is injected into the injection well.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: May 27, 1997
    Assignee: Texaco Inc.
    Inventors: Phillip K. Notz, John Prieditis, James F. Stevens
  • Patent number: 5604184
    Abstract: Disclosed is an improvement in a method for propping a fracture adjacent a wellbore formed by injecting in said fracture a carrier fluid containing proppant coated with a curable resin which improvement comprises:a) using proppant coated with a resin fluid containing a polymerizable oligomer of furfuryl alcohol resin, a catalyst comprising an oil soluble, slightly water soluble organic acid and an ester of a weak organic acid to consume water produced by the polymerization of resin;b) using as a carrier an aqueous saline fluid comprising water which is 70% to 100% saturated with sodium chloride,c) suspending said resin-coated proppant in the carrier fluid, forming a fluid mixture of resin-coated proppant and carrier fluid; and injecting said mixture into said fracture, wherein the timing of the addition of the catalyst can be varied.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: February 18, 1997
    Assignee: Texaco, Inc.
    Inventors: Patrick D. Ellis, Billy W. Surles
  • Patent number: 5597961
    Abstract: A three phase meter to measure the oil/water/gas fractions of a multi-phase fluid flow uses a fraction meter and a flow meter to calibrate flow with the fraction meter sending mixture density information to the flow meter to make the calculation.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: January 28, 1997
    Assignee: Texaco, Inc.
    Inventor: John D. Marrelli
  • Patent number: 5597944
    Abstract: The dehydrogenation of n-parrofins to n-olefins is catalyzed by novel synthetic manganese oxide octahedral molecular sieves such as OMS-1 and OMS-2.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: January 28, 1997
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, Robert A. Sawicki, Yuan-Gen Yin, Wen-Qing Xu, Steven L. Suib
  • Patent number: 5583266
    Abstract: A two-step integrated process for the generation of diisopropyl ether from a crude by-product acetone stream which comprises:a) Hydrogenating said crude acetone over a supported, hydrogenation catalyst to give an isopropanol-rich effluent;b) passing said isopropanol-rich intermediate directly to a second reactor, andc) subject said IPA to dehydration conditions in the presence of hydrogen and a strong acid zeolite catalyst from the group consisting of .beta.-zeolite, optionally modified with one or more metals from Groups IB, VIB, VIIB and VIII of the Periodic Table, and a dealuminized Y-zeolite.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 10, 1996
    Assignee: Texaco Inc.
    Inventors: Robert J. Taylor, Jr., Pei-Shing E. Dai, John F. Knifton
  • Patent number: 5580450
    Abstract: An oil recovery skimmer assembly, mountable on any suitable barge like structure, has means for placing booms so as to direct water to at least one scoop assembly where surface water and oil is skimmed off and pumped to a separator tank where substantially all the oil is separated from the water and the water returned to within the boom area, thereby assuring retreatment of the water and non-return of oil to the environment.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: December 3, 1996
    Assignee: Texaco, Inc.
    Inventors: Leslie P. Lombas, Daniel P. Pitre
  • Patent number: 5578094
    Abstract: A method facilitating the deslagging of a partial oxidation reactor used to produce syngas is disclosed. The slag comprises vanadium trioxide and a siliceous material that accumulate on the interior walls of the partial oxidation reactor as a byproduct of the syngas production. The deslagging is accomplished by controlled oxidation, wherein the vanadium to glass weight ratio is maintained to at least about 3:2, operating the reactor at a temperature of at least about 2000.degree. F, and maintaining controlled oxidation conditions sufficient to convert the vanadium trioxide in the slag to vanadium pentoxide.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: November 26, 1996
    Assignee: Texaco Inc.
    Inventors: D. Duane Brooker, James S. Falsetti
  • Patent number: 5577926
    Abstract: A pressure balanced cable junction or termination box is provided for subsea use. A fluid tight hollow body member is filled with insulating fluid. A-cable to be terminated enters one side of the cable termination device and is coupled to the box. A compressible fluid reservoir in contact with the external water pressure on one side transmits the pressure to the filling insulating fluid on the other side to provide pressure balancing.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: November 26, 1996
    Assignee: Texaco, Inc.
    Inventor: Steven C. Cox
  • Patent number: 5578282
    Abstract: A new class of manganese oxide octahedral molecular sieves possess a (4.times.4) tunnel structure. The molecular sieves possess the general compositionA.sub.a M.sub.b Mn.sub.16-b O.sub.32 n.multidot.H.sub.2 Owherein A is +1, +2, +3 or +4 tunnel cation or combination thereof, 0.ltoreq.a.ltoreq.8, M is +1, +2, +3 or +4 framework-substituting metal cation or combination thereof, 0.ltoreq.b.ltoreq.16 and n.gtoreq.0.A method of producing the molecular sieves includes the steps of dissolving a manganese salt in an organic solvent, e.g., ethanol, adding a permanganate salt to the resulting solution to provide a solid intermediate which is recovered and heated to a temperature which results in producing an octahedral molecular sieve having a (4.times.4) tunnel structure.The molecular sieves are useful in such applications as oxidation catalysis, hydrocarbon conversion, adsorption and electrochemical sensors.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: November 26, 1996
    Assignee: Texaco Inc.
    Inventors: Chi-Lin O'Young, Steven L. Suib
  • Patent number: 5576974
    Abstract: The gas fraction of a multiphase fluid is determined using `on-line` statistical methods and then using that fraction to compute the correct water fraction. The gas fraction (Xg) is detected by using the standard deviation of the raw phase (Pstd), maximum phase in the sampling interval (Pmax), average phase (Pavg) or standard deviation of attenuation (Astd) data and maximum attenuation in the sampling interval (Amax), or average attenuation (Aavg) from streams flowing in the water fraction monitor sensor cell where the conditions are determined.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: November 19, 1996
    Assignee: Texaco Inc.
    Inventors: John D. Marrelli, Farhan Siddiqui
  • Patent number: 5576464
    Abstract: MTBE, prepared by reacting MeOH with TBA to form a primary etherification reaction product, is distilled in a first distillation column to provide a first lower boiling distillation fraction comprising methyl tertiary butyl ether, isobutylene, methanol, dimethyl ether, and the first lower boiling fraction is water washed to provide an overhead extract that is distilled in a second distillation column to provide a second lower boiling distillation fraction comprising isobutylene, dimethyl ether and water, which is dewatered to provide a feed fraction comprising isobutylene and dimethyl ether that is reacted with less than an equivalent amount of MeOH to provide a secondary reaction product comprising MTBE, less than 0.5 wt. % of MeOH, isobutylene and contaminants including TBA and dimethyl ether, and the secondary reaction product is recycled to the second distillation column.
    Type: Grant
    Filed: August 8, 1995
    Date of Patent: November 19, 1996
    Assignee: Texaco Chemical Inc.
    Inventor: Kyle L. Preston
  • Patent number: 5573725
    Abstract: A series of water-dispersible and oil-dispersible corrosion inhibiting solutions are disclosed which comprise about 10 ppm by volume to about 5% by volume of an acid catalyzed condensation reaction product of a fatty acid and a polythioether polyol represented by the formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H, a methyl group, or an ethyl group, X is a divalent organic radical selected from the group consisting of --C.sub.2 H.sub.4 --, --C.sub.4 H.sub.8 --, --C.sub.2 C.sub.4 OC.sub.2 H.sub.4 --, and C.sub.2 H.sub.4 SC.sub.2 H.sub.4 --, and n is about 2 to about 40. Metal equipment can be protected through the use of the invention corrosion inhibiting solutions by contacting metal with an effective amount of inhibiting solution containing the polythioether polyol/fatty acid reaction product in a continuous exposure or batch treatment.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: November 12, 1996
    Assignee: Texaco Inc.
    Inventor: Michael J. Incorvia
  • Patent number: 5571403
    Abstract: An improved process for extracting hydrocarbons from a diatomite ore which comprises the combination of the steps of:a) Reducing the particle size of the ore to form a processed ore;b) Grinding the processed ore in an enclosed pin mixer to form pelletized ore;c) Feeding the pellets into each section of a ROTOCEL.RTM. extractor unit containing 5-8 sections or baskets to form columns of pelletized ore;d) Distributing a solvent from the top of each column of the ROTOCEL.RTM. extractor and allowing the solvent to permeate the pelletized ore column to form a hydrocarbon-rich solvent stream while leaving behind spent ore mixture;e) Separating extracting solvent from the hydrocarbon solvent stream to form a hydrocarbon product stream and an extracting solvent stream;f) Removing the spent ore mixture from the extracting zone;g) Recycling the extracting solvent; andh) Recovering the hydrocarbon product.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 5, 1996
    Assignee: Texaco Inc.
    Inventors: Thomas G. Scott, Frederick B. Seufert, Edward J. Hanzlik
  • Patent number: 5567088
    Abstract: Methods are disclosed for treating porous media such as subsurface storage tanks or excavations therefore to form primary or secondary permeability barriers. A treatment fluid comprising a polymerizable monomer, a diluent therefor, and a strong acid catalyst mixed with steam is injected into a volume to be treated and contacted with the interior surface thereof. Contact is maintained for a duration sufficient to cause polymerization to occur forming an impermeable barrier in or on the interior surface of the treated volume.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: October 22, 1996
    Assignee: Texaco, Inc.
    Inventors: Noel J. Shotts, Billy W. Surles, Philip D. Fader
  • Patent number: 5567396
    Abstract: Internal components for a vertical downflow reactor include a closed-ended conduit having an internal baffle and longitudinal exit slots proximate its closed end for the symmetrical introduction of quench fluid into a quench zone. An interzone mixing configuration is in vertical communication with the bottom of the quench zone. An inwardly sloping collector tray has an opening concentric with the vertical axis of the reactor vessel. A mixing device is provided for mixing the liquid and vapor components entering from above the collector tray and conveying the mixed vapor and liquid downwardly through the opening. Flow deflectors are positioned immediately below the collector tray opening for directing liquid flow towards the axial centerline of the reactor. The flow deflectors take the form of four pie-shaped plates which are configured to collectively occupy between 25 to 75 percent of the concentric circular opening the collector tray and may slope downwardly at an angle of from about 30.degree. to about 60.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: October 22, 1996
    Assignee: Texaco Inc.
    Inventors: George K. Perry, John C. Strickland
  • Patent number: 5567211
    Abstract: A motor fuel additive composition comprising a mixture of an amido alkanolamine and a polyisobutylene amine is provided. A fuel composition providing intake valve and combustion chamber detergency is also provided.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: October 22, 1996
    Assignee: Texaco Inc.
    Inventors: Joseph M. Russo, Christopher S. Liu, Thomas F. DeRosa, Benjamin J. Kaufman, Scott O. Lindholm, James R. Ketcham
  • Patent number: 5566891
    Abstract: Methods for grinding hot coke including feeding the hot coke into a system while maintaining the system under less than atmospheric pressure, wetting the coke during the feeding step to assure constant flow of the coke into a grinding mill where the coke is reduced to a slurry and forwarded to a holding tank. Recovering and treating vapors derived from the grinding of the coke and finally feeding the slurry to a gasifier means.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: October 22, 1996
    Assignee: Texaco Development Corporation
    Inventors: Paul S. Wallace, Henry C. Chan