Patents Represented by Attorney Richard A. Morgan

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  • High temperature compressor oil
    Patent number: 5156759
    Abstract: A lubricating composition has been found which has particular utility in gas compressors. The composition comprises a polyalphaolefin base oil, an ester oil solubilizer, antioxidants and metal passivators. The composition replaces a mineral oil formulation and demonstrates comparable thermal and oxidative stability in the absence of sulfur, phosphorous and metal additives.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: October 20, 1992
    Assignee: Texaco Inc.
    Inventor: Douglas H. Culpon, Jr.
  • Chain and drive gear lubricant
    Patent number: 5151205
    Abstract: A lubricating composition has been found for chain and gear drive mechanisms. The composition comprises a polyalphaolefin base oil, an ester oil solubilizer and 2 to 4 wt % of a polybutene tackifier. The composition replaces a mineral oil formulation and demonstrates persistent lubricity and substantially reduced smoking in chain and drive gear assemblies operated at high temperatures.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: September 29, 1992
    Assignee: Texaco Inc.
    Inventor: Douglas H. Culpon, Jr.
  • Mold release agent and method for molding ceramics
    Patent number: 5133804
    Abstract: A mold release composition has been discovered. The composition comprises 20% high erucic acid rapeseed oil and 4% tall oil fatty acids in kerosene. The composition demonstrated no objectional smoke generation during calcining of molded ceramic articles. The composition demonstrated adequate mold release and surface finish.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: July 28, 1992
    Assignee: Texaco Inc.
    Inventor: Douglas H. Culpon, Jr.
  • Epoxy resin compositions
    Patent number: 5120817
    Abstract: An epoxy resin composition comprises an vicinal polyepoxide and a Mannich condensation reaction product curing agent. The curing agent is the Mannich condensation reaction product of a phenol, formaldehyde and a polyoxyethylenediamine of the formula:NH.sub.2 (CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 CH.sub.2 NH.sub.2,and wherein: x ranges from 1 to 3. These epoxy resin compositions are useful in coatings, adhesives, encapsulations and composite matrices.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: June 9, 1992
    Assignee: Texaco Chemical Company
    Inventors: George P. Speranza, Harold G. Waddill, Jiang-Jen Lin
  • Process for overbasing sulfonates comprising two separate additions of calcium oxide
    Patent number: 5108630
    Abstract: In an overbased sulfonate process calcium hydroxide is formed in situ. The entire water charge and 30 to 50% of the calcium oxide is added. The temperature exotherm is observed. When the temperature ceases to rise, the remaining calcium hydroxide is added with temperature adjustment and carbonation is begun.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: April 28, 1992
    Assignee: Texaco Inc.
    Inventors: Elzie D. Black, Leonard A. Matthews, William J. Powers, III, Robert W. Erickson, Jr.
  • Two catalyst stage hydrocarbon cracking process
    Patent number: 5108580
    Abstract: In a two stage catalytic cracking process a heavy cycle gas oil fraction (HCGO) nominal boiling range 600.degree. F. to 1050.degree. F., API gravity of -10.degree. to +10.degree. and 65 to 95 vol % aromatics is recycled to extinction between an ebullated bed hydrocracking zone and fluidized catalytic cracking zone to yield a liquid fuel and lighter boiling range fraction as the light fraction from each zone.The catalyst in the fluidized catalytic cracking zone is maintained at a micro activity 68 to 72 while cracking a virgin gas oil to HCGO. HCGO is then mixed with vacuum residuum and hydrocracked in an ebullated bed reactor. The mid range fraction is recycled to the fluidized catalytic cracking zone. The 1000.degree. F..sup.+ fraction is blended with a fuel oil.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: April 28, 1992
    Assignee: Texaco Inc.
    Inventors: Govanon Nongbri, Gerald V. Nelson, Roy E. Pratt, Charles H. Schrader, William B. Livingston, Michael P. Bellinger, Scott M. Sayles
  • Method for recovering hydrocarbon contaminants from wastewater
    Patent number: 5106507
    Abstract: A method has been discovered for recovering hydrocarbon contaminants from wastewater. The wastewater is contacted countercurrently with stripping gas. The stripping gas is passed over a bed of activated carbon to remove hydrocarbon contaminants. Periodically, the activated carbon bed is regenerated with steam. Steam condensate and hydrocarbon contaminants are passed to a petroleum desalter. Hydrocarbon contaminants are transferred to the petroleum.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: April 21, 1992
    Assignee: Texaco Inc.
    Inventors: Byron Von Klock, Rahul S. Patel
  • Controlling foam circulation in an ebullated bed process
    Patent number: 5098552
    Abstract: The invention is an improvement in an ebullated bed process. Gas is removed from the vertically oriented reaction vessel until the vessel, including the recycle conduit is liquid filled. Foam, generated around the recycle cup and riser conduits is floated to the top of the reaction vessel by liquid and is prevented from entering the recycle conduit. A more stable hydrodynamic system is thereby achieved.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: March 24, 1992
    Assignee: Texaco Inc.
    Inventor: John C. Strickland
  • Vortex breaker for horizontal liquid draw off tray sump
    Patent number: 5096578
    Abstract: A vortex breaker has been invented for a liquid draw off tray with horizontal liquid draw off. Liquid is removed from the sump of the tray horizontally through a port. A first vertically oriented baffle has a top edge above the port, a bottom edge below the port and a side edge adjacent the port. A second vertically oriented baffle is perpendicular to the first baffle. The second baffle has a top edge above the port and a bottom edge spaced from the sump bottom a distance to about one-half port diameter, allowing for the flow of liquid thereunder. The vortex breaker is useful for a liquid spare horizontal liquid draw off tray.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: March 17, 1992
    Assignee: Texaco Inc.
    Inventors: John C. Strickland, Robert M. Steinberg
  • Liquid degasser in an ebullated bed process
    Patent number: 5066467
    Abstract: In an ebullated bed reactor it has been found that an improved gas-liquid separator effectively removes gas from recycle liquid used to ebullate the catalyst bed. The gas-liquid separator comprises a cup with a plurality of riser conduits. Two stages of cyclone separators effect the final liquid-vapor separation.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: November 19, 1991
    Assignee: Texaco Inc.
    Inventor: Ting Y. Chan
  • Desulfurizing in a delayed coking process
    Patent number: 5045177
    Abstract: An improvement has been found in the gas recovery section of a delayed coking process. In the improvement the compressor discharge is amine scrubbed to remove hydrogen sulfide. The compressor discharge is the entire vapor feed to the gas recovery section and contains about 90% of the hydrogen sulfide. This has been found to cause a significant drop in both the depropanizer and debutanizer pressure and allow a saving in the investment cost of the pressure vessel. Synergistically a reduced amount of hydrogen sulfide is present in the entire gas recovery section. The remaining 10% of the hydrogen sulfide is removed by amine scrubbing the fuel gas and propane/propylene fractions.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: September 3, 1991
    Assignee: Texaco Inc.
    Inventors: John C. Cooper, James H. Colvert
  • Suppressing sediment formation in an ebullated bed process
    Patent number: 5043056
    Abstract: In an ebullated bed process, a residual hydrocarbon oil and a hydrogen containing gas is passed upwardly through an ebullated bed of catalyst in a hydrocracking zone at a temperature in the range of 650.degree. F. to 950.degree. F. and pressure of 1000 psia to 5000 psia. The hydrogen containing gas comprises hydrogen sulfide in an amount to maintain the sulfur content of the oil in the hydrocracking zone at 2 wt % to 10 wt %. A hydrocracked oil is recovered characterized by having a reduced sediment content.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: August 27, 1991
    Assignee: Texaco, Inc.
    Inventors: Roy E. Pratt, Jitendra A. Patel
  • Solvent extraction of lubricating oils
    Patent number: 5041206
    Abstract: A lubricating oil stock is extracted with N-methyl-2-pyrrolidone to yield a primary raffinate useful as a high VI lubricating base oil and a primary extract. The primary extract is mixed with antisolvent and chilled to yield a secondary raffinate. This secondary raffinate is sufficiently reduced in aromatics that it is suitable for fluidized catalytic cracking in the absence of hydrogenation.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: August 20, 1991
    Assignee: Texaco Inc.
    Inventor: Avilino Sequeira, Jr.
  • Solvent extraction of lubricating oils
    Patent number: 5039399
    Abstract: A lubricating oil stock is extracted with N-methyl-2-pyrrolidone to yield a primary raffinate useful as a high VI lubricating base oil and a primary extract. The primary extract is mixed with antisolvent and chilled to yield a secondary raffinate. This secondary raffinate is sufficiently reduced in aromatics that it is solvent extracted to yield medium to high VI lubricating base oil.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: August 13, 1991
    Assignee: Texaco Inc.
    Inventor: Avilino Sequeira, Jr.
  • Hydrotreater feed/effluent heat exchange
    Patent number: 5039396
    Abstract: A heat integrated hydrotreating process has been invented. The feedstock is a cracked hydrocarbon stock which is mixed with hydrogen to suppress coking before heating in a multiple tube furnace to reactor inlet temperature. A minor portion of the feedstock is mixed with hydrogen and heated to reactor inlet temperature by quenching the hot reactor effluent. The minor portion is fed directly to the hydrogenation reactor, bypassing the furnace. By the process, high level heat is recovered.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: August 13, 1991
    Assignee: Texaco Inc.
    Inventors: Robert M. Steinberg, Vijay A. Deshpande
  • Control system for delayed coker
    Patent number: 5024730
    Abstract: A system controls a delayed coker in which a heavy liquid hydrocarbon feedstock is thermally decomposed to a solid coke product in a cyclical process. When the coking portion of the cycle is completed, the coke in the drum is cooled by quench water, and the quench water is then passed from the coke drum through a manifold to a drain conduit. Hot vapor is passed through the coke drum, via the same manifold to warm the coke drum. A temperature controller, valve actuator and ball valve allow passage of vapor to the coker fractionator at a manifold temperature at which all water is in the vapor state. Manifold temperatures at which liquid water may exist causes the ball valve to close, preventing liquid water from flowing into the coker fractionator. Upset of the coker fractionator is prevented.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: June 18, 1991
    Assignee: Texaco Inc.
    Inventor: James H. Colvert
  • Fluid catalytic cracking catalyst-vapor separator
    Patent number: 5019354
    Abstract: In a fluid catalytic cracking process, a new separator apparatus has been invented for separating catalyst from cracked vapor. The separator comprises a downwardly spiraling channel. The separator demonstrates good separation efficiency even at turn down flow rates.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: May 28, 1991
    Assignee: Texaco Inc.
    Inventor: Henry C. Chan
  • Solvent dewaxing of lubricating oils
    Patent number: 5006222
    Abstract: An improvement has been discovered in a process for solvent dewaxing a hydrocarbon lubricating oil stock. Solvent dewaxed oils are steam stripped and then vacuum dehydrated at 2.5 psia at the steam stripping temperature of 350.degree. F. to 450.degree. F. Nitrogen or natural gas having a dew point of -100.degree. F. or lower is contacted with the oil at 0.5 to 1 SCF/bbl. A solvent free lubricating oil is produced which is water haze free in cold storage.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: April 9, 1991
    Assignee: Texaco Inc.
    Inventor: Avilino Sequeira, Jr.
  • Liquid inventory control in an ebullated bed process
    Patent number: 4971678
    Abstract: The invention is an improvement in an ebullated bed process. Gas is removed the ebullated bed reactor preferentially to liquid. Gas is removed by material balance control until the reactor, including the recycle conduit is liquid full. Foam, generated around the recycle cup and riser conduits is floated upward by liquid and does not enter the recycle conduit. When steady state is achieved, liquid and gas are both removed from the reactor under material balance control.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: November 20, 1990
    Assignee: Texaco Inc.
    Inventor: John C. Strickland
  • Process for decoking fluid catalytic cracking catalyst
    Patent number: 4968404
    Abstract: In a fluid catalytic cracking process, coke is burned from spent catalyst at elevated temperature in a vertically arranged regenerator vessel. The regenerator vessel contains a lower, dense phase oxidation zone to which spent catalyst is introduced and an upper, dilute phase oxidation zone. Catalyst is fluidized and oxidized by means of air which is introduced in an amount of 5 vol % to 15 vol % to a lower air distributor at the bottom of the dense phase zone. Spent catalyst is discharged above the lower air distributor. The balance of the air is distributed in a horizontal plane in the dense phase above the catalyst discharge. As a result, a substantial proportion of the coke and carbon monoxide is burned in the dense phase zone at a lower temperature. A reduced amount of carbon monoxide is carried over to the dilute phase where higher temperature oxidation occurs.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: November 6, 1990
    Assignee: Texaco Inc.
    Inventors: Henry C. Chan, Gary E. Collier