Abstract: The present invention includes a dielectric sensor which provides at least two signals corresponding to the sensed dielectric of a petroleum stream. A temperature sensor also senses the temperature of the petroleum stream and provides a corresponding temperature signal. Crossplot data arrange the two parameters associated with the petroleum stream dielectric is stored in a memory. The memory is accessed using signals from the dielectric sensor and the temperature sensor to select data from the memory. An output circuit provides a water cut signal in accordance with the selected data.
Abstract: Solutions of potassium, aliphatic monocarboxylate, hydrocarbyl dicarboxylate and hydrocarbyl triazole, with one or more silicate, phosphate, borate, or nitrate, have superior compatibility and anticorrosion properties, useful in heat transfer fluids, antifreezes and metal corrosion inhibition.
Abstract: Hydrodesulfurization and demetallalization of hydrocarbon charge is effected by hydrogenation in the presence of, as catalyst, a Group VI A metal and a non-noble Group VIII metal on a trimodal alumina support. The alumina support is formed by mixing at least two different finely divided charge aluminas each of which has a different pore mode.
Abstract: A hot feed gas is controlled by utilizing a nuclear magnetic resonance analyzer to analyze the composition of the gas and to provide at least one corresponding composition signal. A valve controls the flow of the gas in accordance with a control signal. A network connected to the analyzer and to the valve provides the control signal to the values in accordance with the composition signal so as to control the flow of the gas as a function of the composition of the gas.
Type:
Grant
Filed:
October 13, 1992
Date of Patent:
November 30, 1993
Assignee:
Texaco Inc.
Inventors:
Paul J. Giammatteo, Richard J. Trocino, Gregory Marsh
Abstract: A spray polyurea elastomer which exhibits improved resistance to abrasion is disclosed. The elastomer includes an isocyanate, an amine terminated polyoxyalkylene polyol, a chain extender and a chemically sized filler material. The isocyanate is preferably a quasi-prepolymer of an isoyanate and a material selected from at least one polyol, a high molecular weight polyoxyalkyleneamine or a combination thereof. A method for making a spray polyurea elastomer which is substantially resistant to abrasion is also disclosed.
Abstract: A process for disposing of sewage sludge comprising the steps of, (1) dewatering the sewage sludge to produce an aqueous slurry of sewage sludge having a solids content of about 10 to 30 wt. %; (2) simultaneously heating and shearing said dewatered sewage sludge at about 150.degree. F. to 210.degree. F. in the absence of air for 0.5 seconds to 60 minutes while being continuously passed through a tubular-shaped processing means containing a plurality of rotating agitators, thereby producing a pumpable slurry having a viscosity of less than about 2000 centipoise; (3) dewatering the sewage sludge if necessary; (4) mixing at a temperature in the range of about ambient to 180.degree. F. in a ribbon or in-line static mixer the slurry of sewage sludge from (2) and/or (3) with a supplemental solid carbonaceous fuel e.g. coal and/or petroleum-coke to produce a pumpable aqueous slurry of sewage sludge and supplemental fuel having a solids content in the range of about 50 to 60 wt.
Type:
Grant
Filed:
November 23, 1992
Date of Patent:
November 30, 1993
Assignee:
Texaco Inc.
Inventors:
Matthew A. McMahon, Motasimur R. Khan, Robert F. Heyl, Ronald J. McKeon, Kenneth W. McKenzie
Abstract: A lubricating oil composition comprising(a) a major amount of a base oil having a lubricant viscosity, and(b) a minor amount of, as an antioxidant/dispersant antiwear VI improver additive, a lubricant additive.
Abstract: A lubricating oil composition comprising:(a) a major amount of a base oil having a lubricant viscosity; and(b) a minor amount of, as an antioxidant/dispersant VI improver additive, a lubricant additive.
Abstract: A partial oxidation process and a novel burner are provided for simultaneously introducing two or three separate feedstreams into a free-flow partial oxidation gas generator for the production of synthesis gas and fuel gas, or reducing gas. The reactant feedstreams include a liquid hydrocarbonaceous fuel or a pumpable slurry of solid carbonaceous fuel, and a free-oxygen containing gas e.g. air or oxygen. The burner comprises a central conduit and a plurality of spaced concentric coaxial conduits with down-flowing annular passages. A flat annular-shaped disc or cup-shaped porous ceramic or porous metal cooling means of uniform composition, wall thickness and porosity with the various pores interconnecting is attached to the downstream tip of the burner. A controlled amount of liquid coolant under pressure is passed successively through the porous inside surface, porous core and porous outside surface of the cooling means is vaporized. The tip of the burner is thereby cooled.
Type:
Grant
Filed:
December 23, 1991
Date of Patent:
November 16, 1993
Assignee:
Texaco Inc.
Inventors:
Albert Brent, Robert J. Stellaccio, Mitri S. Najjar, Jerrold S. Kassman
Abstract: A multi-functional motor fuel additive comprising (a) a mono-polyalkenylsuccinimide, (b) a bis-polyalkenylsuccinimide and (c) a heavy oil is provided. A motor fuel composition comprising a major portion of a base fuel and a minor portion, sufficient to provide port fuel injector and intake valve detergency, of the multi-functional motor fuel additive of the present invention and a concentrate of the multi-functional motor fuel additive of the present invention are also provided.
Type:
Grant
Filed:
January 6, 1992
Date of Patent:
October 26, 1993
Assignee:
Texaco Inc
Inventors:
Sheldon Herbstman, Benjamin J. Kaufman, William H. Bitting, Peter J. Choate
Abstract: Hot raw fuel gas is produced by the partial oxidation of liquid or gaseous hydrocarbonaceous fuel or an aqueous slurry of solid carbonaceous fuel with substantially pure oxygen. The raw fuel gas is cleaned, cooled in a plurality of indirect heat exchangers, and purified to produce clean sulfur-free fuel gas. Water is the coolant in one of said indirect heat exchangers and is thereby heated. Dry nitrogen gas is humidified with the warm water and the humidified nitrogen gas is separately introduced into the combustor of a combustion turbine. The clean sulfur-free fuel gas is passed in indirect heat exchange with the raw fuel gas, expanded to reduce its temperature and pressure, and separately introduced into the combustor where it is burned with air while in the presence of the water humidified nitrogen gas. Flue gas containing water humidified nitrogen gas and a substantially reduced amount of NO.sub.x gases is produced and passed through a power-producing expansion turbine as the working fluid.
Abstract: A water cut meter includes a test cell through which a petroleum stream will flow. The test cell includes an outer shell, a sensor probe which cooperates with the outer shell to form a sensor capacitor with the flow of the petroleum stream as the dielectric and a reference probe surrounded with pure oil as the dielectric to form a reference capacitor. Processing apparatus includes a comparator network electrically connected to the sensor capacitor and to reference capacitor which compares the capacitance of the sensor capacitor with the capacitance of the reference capacitor. The comparator network provides a signal corresponding to the capacitance difference between the sensor and reference capacitors. An output circuit connected to the comparator network provides an output corresponding to the water cut of the petroleum stream in accordance with the signal from the comparator network.
Abstract: An emulsion breaking apparatus for segregating a lesser specific gravity liquid from an emulsion by a gravity separation. A primary separating chamber within the apparatus receives a flow of the emulsion and directs said flow through a panel array which defines a tortuous path and one or more segregating compartments. One or more weirs formed in the panel array function to meter the lighter liquid which rises to the emulsion surface, into the one or more compartments by a gravity flow of the emulsion across said weir. A non-reactive gas introduced into the main separating chamber forms a non-oxidizing gaseous blanket above liquid in the apparatus to avoid corrosive action which might otherwise commence.
Abstract: Corrosion inhibitors containing alkanoic, hydrocarbyl dicarboxylic and carbocyclic-substituted, alkanoic acids or salts give high performance, heat transfer fluids and antifreezes, with improved properties including storage stability.
Type:
Grant
Filed:
June 3, 1992
Date of Patent:
September 7, 1993
Assignee:
Texaco Chemical Co.
Inventors:
David L. Miller, Brian L. Benac, John F. Knifton
Abstract: A charge containing dewaxed oil/dewaxing solvent may be treated to effect separation of components by a thermally cross-linked hydrocarbon-derived elastomer membrane, typified by polybutadiene.
Abstract: An additive composition comprising a graft and aminoheteroaromatic derivatized copolymer prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a number average molecular weight ranging from about 5000 to 500,000 which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with an aminoheteroaromatic compound and a lubricating oil composition containing same are provided.
Type:
Grant
Filed:
August 24, 1989
Date of Patent:
August 24, 1993
Assignee:
Texaco Inc.
Inventors:
Theodore E. Nalesnik, Benjamin J. Kaufman, James G. Dadura
Abstract: Mixtures containing methanol and dimethyl carbonate or methanol and methyl t-butyl ether may be treated by pervaporation to recover product containing decreased quantity of methanol.
Abstract: A charge containing dewaxed oil/dewaxing solvent may be treated to effect separation of components by a thermally cross-linked hydrocarbon-derived elastomer membrane, typified by polybutadiene.
Abstract: A variant strain of Agrobacter radiobacter has been found to produce a unique heteropolysaccharide containing D-galactose, D-glucose and pyruvic acid in approximate molar ratios of 2:15:2 in a seventeen member repeat unit having the structure shown below, wherein Glc represents D-glucose, Gal represents D-galactose and Pyr represents pyruvic acid, with the numerals indicating the positions of linkage in these ring structures. The heteropolysaccharide is useful in mobility control in oil reservoir formations, especially when crosslinked with trivalent metal cations (Cr.sup.3+, Al.sup.3+, Fe.sup.3+ or Ti.sup.3+) to form a gel which preferentially fills high permeability zones in such reservoirs.
Type:
Grant
Filed:
January 18, 1991
Date of Patent:
August 17, 1993
Assignee:
Texaco Inc.
Inventors:
Peter D. Robison, Arthur J. Stipanovic, Charles E. Stypulkoski, Nick C. Wan, Susan Easter