Patents Assigned to Compagnie de Raffinage et de Distribution
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Patent number: 5506365Abstract: The invention relates to a process for the conversion of petroleum hydrocarbons in the presence of catalyst particles in a fluidized phase in an essentially upflow or downflow tubular reaction zone. The process includes at least one stage of steam cracking of at least one light hydrocarbon fraction and a stage of catalytic cracking of at least one heavy hydrocarbon fraction. The steam cracking is carried out by contacting the light hydrocarbons and a quantity of steam equal to at least 20 percent by weight in a fluidized bed of the catalyst particles, the resulting temperature ranging from 650.degree. to 850.degree. C. The catalytic cracking of the heavy hydrocarbons is carried out by injection of the effluents from the upstream section of the reaction zone into the catalyst suspension in such a way that the temperature of the mixture ranges from 500.degree. to 650.degree. C. and is then reduced to a temperature ranging 475.degree. to 550.degree. C.Type: GrantFiled: May 6, 1993Date of Patent: April 9, 1996Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud, Jean-Claude Courcelle
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Patent number: 5348644Abstract: In a fluidized catalytic cracking (FLC) type unit for contacting of a hydrocarbon feedstock with hot solid particles in a fluidized bed in an upright tubular-type upflow hydrocarbon conversion reactor, there is provided, between the means for fluidization and the means for injection of the feedstock, a means for causing the fluidized phase at the periphery of the reactor to rotate about the axis of the reactor.Type: GrantFiled: November 13, 1990Date of Patent: September 20, 1994Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Pierre Maroy, Roben Loutaty, Thierry Patureaux
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Patent number: 5264115Abstract: The invention relates to a process for the conversion of petroleum hydrocarbons in the presence of catalyst particles in a fluidized phase in an essentially upflow or downflow tubular reaction zone, said process comprising at least one stage of steam cracking of at least one light hydrocarbon fraction and a stage of catalytic cracking of at least one heavy hydrocarbon fraction.The steam cracking is carried out by contacting the light hydrocarbons and a quantity of steam equal to at least 20 percent by weight in a fluidized bed of the catalyst particles, the resulting temperature ranging from 650.degree. to 850.degree. C.The catalytic cracking of the heavy hydrocarbons is carried out by contacting them with the effluents from the upstream section of the reaction zone and the catalyst suspension in such a way that the temperature of the mixture ranges from 500.degree. to 650.degree. C. and is then reduced to a temperature ranging from 475.degree. to 550.degree. C.Type: GrantFiled: December 23, 1991Date of Patent: November 23, 1993Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud, Jean-Claude Courcelle
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Patent number: 5213679Abstract: Catalytic conversion of a hydrocarbon feedstock comprising a stage of catalytic cracking of a hydrocarbon feedstock, a stage of separation of the products of cracking from the catalytic mass, and a stage of regeneration and recycling of the catalytic mass and between the stage of regeneration of the catalytic mass and the stage of separation of the products of cracking there is injected continuously or intermittently, at one or more points, in admixture with at least one hydrocarbon to be treated, at least one diorganophosphite of the general formula ##STR1## where R.sub.1 and R.sub.2, which may be alike or different, are selected from the group consisting of alkyl, aryl or aralkyl groups having from 1 to 30 carbon atoms.Type: GrantFiled: October 15, 1990Date of Patent: May 25, 1993Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Michael Bourgogne, Jean-Claude Courcelle, Claude Marty
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Patent number: 5154857Abstract: The invention relates to a water-soluble demulsifying and antifouling agent capable of separating possibly emulsified water/hydrocarbon mixtures, and particularly water/crude petroleum mixtures containing suspended matter.Said agent comprises from 10 to 60 percent by weight of a combination of the following compounds:at least one quaternary tetraalkylammonium halide; andat least one polyalkyloxylated alkylenediamine or its sulfate.Type: GrantFiled: August 9, 1991Date of Patent: October 13, 1992Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Marc Durrieu, Patrice Herrenschmidt, Claude Marty
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Patent number: 5151400Abstract: The invention relates to a process for the preparation and activation of a catalyst, comprising a stage of fabricating a support consisting at least in part of at least one refractory oxide mineral, a stage of depositing on the support at least one metal from the platinum group, and a stage intended for forming on the support at least two metal halides of the Lewis acid type. Between the deposition of the metal halides of the Lewis acid type and the utilization of the catalyst in the reactor, the catalyst is subjected to an activation stage by being maintained in an acidic and nonoxidizing or reducing medium at a temperature between 300.degree. and 475.degree. C. so that its final content of a promoter metal of the zirconium, molybdenum tungsten or titanium type ranges from 0.15 to 1 percent, based on the weight of the support.Type: GrantFiled: July 18, 1990Date of Patent: September 29, 1992Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Georges Szabo, Egbertus F. P. Schasfoort, Alain Milan
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Patent number: 5074989Abstract: This invention relates to a process for the separation of fine catalyst particles from a hydrocarbon feedstock coming from a catalytic cracking unit by filtration through mineral barriers and a filtration loop.The process consists of filtering the feedstock through mineral barriers that are resistant to heat and have a porosity adapted to the minimum diameter of the particles to be retained. The porosity is generally between 0.1 and 100 microns.Type: GrantFiled: January 11, 1991Date of Patent: December 24, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean B. Sigaud, Jean Rossarie
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Patent number: 5069777Abstract: The invention relates to a process for the sweetening of a petroleum fraction in a fixed catalytic bed in the presence of an oxidizing agent, by catalytic oxidation of the mercaptans which it contains, in the presence of a catalyst in the form of a support impregnated with a metal chelate and in the absence of an aqueous base, the water content of the support is maintained within a predetermined range of values by action on the solvent power of the feedstock for the water of the support as a function of temperature.Type: GrantFiled: September 10, 1990Date of Patent: December 3, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean-Michel Orgebin, Claude Marty, Patrick Ansquer, Pierre Maroy
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Patent number: 5053203Abstract: The invention relates to an installation for the fluidized-bed cracking of a hydrocarbon feedstock.In accordance with the invention recycling of the regenerated catalyst particles to the intake of the reactor comprise, from upstream to downstream, a preferably substantially vertical pipe (1) for the discharge of the regenerated particles from the regenerator, and a substantially straight pipe (2) connected to the vertical pipe (1) and sloping downward therefrom to the base (3) of the reactor to which it is connected, the downward-sloping pipe (2) being connected to the vertical pipe (1) and to the base (3) of the reactor through inward-curved portions or elbows which impose neither a sharp change in direction on the course of the particles nor sudden changes in the diameter of the pipes.Type: GrantFiled: January 26, 1989Date of Patent: October 1, 1991Assignee: Compagnie de Raffinage et de Distribution FranceInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud
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Patent number: 5037616Abstract: A device for injection of a hydrocarbon feedstock into a catalytic cracking reactor comprising, from upstream to downstream in the direction of flow of the feedstock, an intake and mixing system (5) for the liquid hydrocarbon feedstock and steam, a venturi tube (6) whose entrance cone (10) is joined to said intake and mixing system (5), and a protective cap (7) that is integral with the discharge cone (14) of the venturi tube and is provided with an orifice (16) for injection of the feedstock into the reactor. The dimensions of the venturi tube (6) are such that the velocity of the mixture of liquid feedstock and steam attains therein sonic conditions at the level of the throat (13), and the rectilinear throat located between the discharge cone (14) and the entrance cone (10) is connected to such cones continuously by a curved section without making an angle exceeding about 5 degrees and about 15 degrees, respectively, with the axis of the venturi tube.Type: GrantFiled: June 21, 1988Date of Patent: August 6, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Christophe Williatte, Jean-Bernard Sigaud, Thierry Patureaux, Roben Loutaty
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Patent number: 5026474Abstract: A process for sweetening a petroleum fraction by catalytic oxidation of mercaptans contained therein in a fixed bed of the supported catalyst, with the oxidation reaction being carried out in the absence of an aqueous phase and in the presence of an oxidizing agent, and the water molecules formed during the oxidation reaction being removed from the catalyst support by washing the latter periodically with a substantial quantity of a polar solvent that is miscible with water.Type: GrantFiled: December 21, 1989Date of Patent: June 25, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Rene Blondeau, Claude Marty, Patrick Ansquer
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Patent number: 5017294Abstract: The invention relates to an apparatus for promoting the separation and/or contact of two immiscible liquids, said apparatus comprising at least one pipe for feeding an emulsion of the two liquids to an assembly of tubes in each of which there is disposed, in the direction of its length and over at least a portion thereof, a bundle of fibers which are preferentially wettable by one of the two liquids, said assembly being connected to a decanter in which the two liquids separate, the decanter being provided with pipes for the discharge of each of the two liquids.The tubes are bounded by two walls, separated by a substantially constant distance, and by a corrugated element inserted between said walls and alternately in contact with each of them through its corrugations.Type: GrantFiled: March 26, 1990Date of Patent: May 21, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventor: Marc Durrieu
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Patent number: 5013368Abstract: The invention relates to a method for the continuous cleaning of the inside of a tube in which a fluid circulates, in which method there is continuously driven in rotation within the tube by the fluid a movable element, one end of which is fastened to one end of the tube through a mechanical linkage permitting it to rotate freely on itself about the axis of the tube. In accordance with the invention, the movable element comprises at least one sharp edge designed to scrape the inner surface of the tube, this edge being disposed so that during the rotation of the movable element it is, along every cross section of the tube, the portion of the movable element farthest removed from the axis of the tube.Type: GrantFiled: November 20, 1989Date of Patent: May 7, 1991Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Pierre Maroy, Thierry Patureaux, David Freychet, Roben Loutaty
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Patent number: 4965232Abstract: A catalyst regeneration process effected in an apparatus which comprises two regeneration chambers, a heat exchanger, means for withdrawing from the second chamber a controlled fraction of hot catalyst for the purpose of maintaining the temperature in that chamber substantially at a first desirable value of less than 950.degree. C., and preferably at 910.degree. C., means for transferring this fraction of hot catalyst to the heat exchanger for the purpose of cooling it, means for the discharge of the cooled catalyst from the heat exchanger and the reinjection of the cooled catalyst into the first chamber, and means, controlled by the means for measuring the temperature in the first chamber, for regulating the supply of combustion fluid to the first chamber for the purpose of maintaining said temperature substantially at a second desired value lower than 730.degree. C. and preferably ranging from 650.degree. to 710.degree. C.Type: GrantFiled: March 9, 1989Date of Patent: October 23, 1990Assignees: Compagnie de Raffinage et de Distribution Total France, Institut Francais du PetroleInventors: Jean-Louis Mauleon, Jean-Bernard Siguad, Renaud Pontier, Frederic Hoffmann
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Patent number: 4959334Abstract: A process for the regeneration of a catalyst by combustion of the coke deposited thereon during a hydrocarbon conversion reaction in which process more than 50 percent of the coke is burned in at least one regeneration chamber operating with a fluidized bed, wherein the upper portion of the fluidized bed the suspension of catalyst particles in said chamber is slowed down due to a substantial increase in the diameter of the regeneration chamber so that the superficial velocity of the rising fluids which no longer contain any oxygen is reduced to a value ranging from 0.5 to 1.5 meters/second, that is, to a value corresponding to the fluidization conditions in a dense fluidized bed.Type: GrantFiled: December 21, 1988Date of Patent: September 25, 1990Assignee: C. Compagnie de Raffinage et de DistributionInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud
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Patent number: 4956322Abstract: The invention relates to a solid granular catalyst subject to degradation by exposure to humidity and/or oxygen, wherein each granule of the catalyst is coated with a continuous and removable protective film of a material that is impermeable to gases and moisture and inert to the constituents of the catalyst.Type: GrantFiled: October 7, 1988Date of Patent: September 11, 1990Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean P. Gouzard, Georges Szabo
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Patent number: 4942133Abstract: Procedure and apparatus for the continuous analysis of the chloride ion content of overhead waters downstream of a hydrocarbon distillation column for more effectively preventing hydrochloric acid corrosion of downstream equipment while avoiding over-neutralizing the overhead waters to the detriment of the hydrocarbon product. This procedure comprises the following operations, in the order given or in a different order:Drawing from the overhead waters a stream of water for analysis;removing from the sample so drawn the hydrocarbons as well as the suspended matter;blowing nitrogen into the sample to sweep away the hydrogen sulfide ans the residual hydrocarbons;oxidizing the S.sup.2- or HS.sup.- sulfide ions to sulfate ions;acidifying the sample;finally, measuring by ionometry, and more particularly by means of a combined electrode, the content of chloride ions present.Type: GrantFiled: December 21, 1988Date of Patent: July 17, 1990Assignee: Compagnie de Raffinage et de DistributionInventors: Jean-Francois Pauly, Gerard Roussel
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Patent number: 4883583Abstract: A process is disclosed for the catalytic cracking of hydrocarbons in a fluidized bed wherein the catalyst particles are injected in a fully fluidized suspension into an elongate reaction zone. In accordance with the process, the feedstock to be cracked is injected in a state of small droplets less than 200 microns in diameter countercurrently to the flow of the fully fluidized suspension of catalyst particles.Type: GrantFiled: August 8, 1988Date of Patent: November 28, 1989Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud
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Patent number: 4882035Abstract: A process for improving the deasphalting of a heavy hydrocarbon feedstock with a solvent by subjecting the feedstock to shearing alternatively after and/or before the addition of at least a portion of the solvent to the feedstock is disclosed. Alternative means for effecting the shearing and desired ranges of shear are also disclosed.Type: GrantFiled: August 12, 1987Date of Patent: November 21, 1989Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Roben Loutaty, Pierre Maroy, Gilles Trinquet
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Patent number: 4875993Abstract: The invention relates to a process and apparatus for catalytic cracking in a fluid phase of a hydrocarbon charge. The process comprises contacting, in ascending or descending flow, the charge and grains of a cracking catalyst in a tubular reactor, ballistically separating the spent catalyst and the cracked charge downstream of the end of said reactor, mixing spent catalyst with grains of at least partially regenerated catalyst having a temperature exceeding that of the grains of spent catalyst, stripping spent catalyst in a dense fluidized phase by means of a fluid injected counter-current into this catalyst regenerating the catalyst under conditions to effect combustion of coke deposited thereon, and recycling regenerated catalyst to feed the reactor.Type: GrantFiled: April 26, 1988Date of Patent: October 24, 1989Assignee: Compagnie de Raffinage et de Distribution Total FranceInventors: Jean-Louis Mauleon, Jean-Bernard Sigaud, Bernard Chapotel, Leonard Seglin