Patents by Inventor Jean Nougayrede
Jean Nougayrede has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10131542Abstract: Embodiments of the invention include a method for degassing liquid sulphur in a container, a first area of the container being flooded with liquid sulphur and a second area of the container being flooded with a gas, and a gas flow being injected into the first area, wherein liquid sulphur is sprayed into the second area. Embodiments of the invention include a device for degassing liquid sulphur having a container comprising two adjacent areas, the first area being flooded with liquid sulphur and the second area being flooded with gas, and having at least one device for injecting a gas flow into the first area, characterized by a device for spraying liquid sulphur opening into the second area. Other embodiments are also included herein.Type: GrantFiled: November 5, 2012Date of Patent: November 20, 2018Assignees: Air Liquide Global E&C Solutions Germany GmbH, NGD ConsultInventors: Jean Nougayrede, Wolfgang Nehb, Eckhard Juengst
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Patent number: 9005566Abstract: A process for advantageously efficiently treating a sulfureous combustible effluent stream by recovering the sulfur in elemental form comprises a step of combustion of the sulfureous combustible effluent stream with an oxidant gas in excess, and then a step of post-combustion of the effluents from the combustion step with an acidic gas. The stream of the post-combustion effluents, free of chemical compounds that are harmful to the efficacy of the Claus catalysts, is treated in a Claus unit, which performs the recovery of the sulfur in elemental form.Type: GrantFiled: August 22, 2012Date of Patent: April 14, 2015Assignee: Total SAInventors: Jean Nougayrede, Soufiene Maktouf
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Publication number: 20140366731Abstract: Embodiments of the invention include a method for degassing liquid sulphur in a container, a first area of the container being flooded with liquid sulphur and a second area of the container being flooded with a gas, and a gas flow being injected into the first area, wherein liquid sulphur is sprayed into the second area. Embodiments of the invention include a device for degassing liquid sulphur having a container comprising two adjacent areas, the first area being flooded with liquid sulphur and the second area being flooded with gas, and having at least one device for injecting a gas flow into the first area, characterised by a device for spraying liquid sulphur opening into the second area. Other embodiments are also included herein.Type: ApplicationFiled: November 5, 2012Publication date: December 18, 2014Inventors: Jean Nougayrede, Wolfgang Nehb, Eckhard Juengst
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Publication number: 20140208998Abstract: The invention relates to a process for advantageously efficiently treating a sulfureous combustible effluent stream by recovering the sulfur in elemental form. This process consists especially of the succession of two steps: a step of combustion of the sulfureous combustible effluent stream with an oxidant gas in excess, a step of post-combustion of the effluents from the combustion step with an acidic gas. The stream of the post-combustion effluents, free of chemical compounds that are harmful to the efficacy of the Claus catalysts, is treated in a Claus unit which performs the recovery of the sulfur in elemental form.Type: ApplicationFiled: August 22, 2012Publication date: July 31, 2014Applicant: TOTAL SAInventors: Jean Nougayrede, Soufene Maktouf
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Patent number: 6444185Abstract: A process is provided to recover residual H2S, SO2, COS and CS2 in the tail gas from a sulphur recovery process. The tail gas is oxidized and hydrolyzed at a temperature of from 180° C. to 700° C. to provide an oxidized and hydrolyzed gas stream containing substantially no COS or CS2 and having a concentration by volume of H2S and SO2 such that the H2S concentration minus twice the SO2 concentration is from 0.25% to 0.5%. Then the gas stream from the hydrolysis is passed over a Claus catalyst, for example based on alumina and/or titanium oxide, for the reaction of H2S with SO2 to form sulphur and provide a gas stream with substantially no SO2.Type: GrantFiled: August 10, 2000Date of Patent: September 3, 2002Assignee: Elf Exploration ProductionInventors: Jean Nougayrede, AndrĂ© Philippe, Sabine Savin-Poncet
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Patent number: 6372193Abstract: A process for catalytically oxidizing H2S contained in a gas directly to sulphur containing the following steps: combining the H2S-containing gas with a gas containing free oxygen in an amount to produce an oxygen-enriched H2S-containing gas having O2/H2S molar ratio ranging from about 0.05 to about 15; and contacting the oxygen-enriched H2S-containing gas with a catalyst for selective oxidation of H2S to sulphur, wherein the catalyst includes a catalytically active phase combined with a silicon carbide-based support and wherein the active phase of the catalyst consists of at least one oxysulphide of at least one metal selected from the group consisting of iron, copper, nickel, cobalt, chromium, molybdenum and tungsten, at a temperature above the dew point of sulphur formed during H2S oxidation.Type: GrantFiled: May 24, 2000Date of Patent: April 16, 2002Assignee: Elf Exploration ProductionInventors: Marc Ledoux, Jean Nougayrede, Cuong Pham-Huu, Nicolas Keller, Sabine Savin-Poncet, Claude Crouzet
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Patent number: 6113872Abstract: A method for removing the sulphur compounds H.sub.2 S, SO.sub.2 and at least one of COS and CS.sub.2 contained in a waste gas is provided. In this method, the waste gas is catalytically hydrolyzed to form a hydrolyzed gas containing H.sub.2 S and SO.sub.2, which is free of COS and CS.sub.2. After cooling, the hydrolyzed gas is introduced in one of two Claus catalytic zones mounted in parallel, while the other catalytic zone is regenerated and cooled. The regeneration is carried out with a gas stream drawn from the hydrolyzed gas before it is cooled, the regeneration gas effluent from the Claus catalytic zone is re-injected into the hydrolyzed gas between the drawing of the regeneration gas stream and the cooling of the hydrolyzed gas.Type: GrantFiled: December 16, 1998Date of Patent: September 5, 2000Assignee: Elf Exploration ProductionInventor: Jean Nougayrede
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Patent number: 6083471Abstract: A process for catalytically oxidizing the H.sub.2 S present at low concentration in a gas to sulphur wherein the gas together with a gas containing free oxygen in a quantity to provide and O.sub.2 to H.sub.2 S mole ratio ranging from 0.05 to 10 are contacted with a catalyst for selectively oxidizing H.sub.2 S to sulphur, the catalyst comprising a support based on silicon carbide associated with a catalytic active phase containing at least one transition metal such as Fe, Ni, Cr, Co, Cu, Ag, Mn, Mo, Ti, W or V, in a form of a metal compound and/or in the elemental state. Prior to treating the gas, the oxidation catalyst is subjected to an activation treatment which loads the active phase of the catalyst to provide maximum sulphurization of the metal of the catalyst. In an alternate embodiment, the oxidation of the H.sub.2 S is performed below the dew point of the sulphur. In another embodiment, the oxidation is performed at a temperature above the dew point of sulphur and in particular between 200.degree. C.Type: GrantFiled: November 19, 1997Date of Patent: July 4, 2000Assignee: Elf Exploration ProductionInventors: Andre Philippe, Sabine Savin-Poncet, Jean Nougayrede, Marc Ledoux, Cuong Pham Huu, Claude Crouzet
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Patent number: 6056936Abstract: A process is provided for the catalytic removal of sulfur compounds, such as hydrogen sulfide and sulfur dioxide, out of a gas by contacting the gas with catalyst composition containing a silicon carbide support and a catalyst component, such as a salt or elemental state of a metal, such as titanium, zirconium, yttrium, lanthanum, uranium, lead, molybdenum, iron, cobalt, copper, nickel, zinc and cadmium and an oxide of a metal, such as uranium, lead, calcium, magnesium and cadmium. The process may be conducted at a temperature above or below the dew point of sulfur.Type: GrantFiled: January 22, 1997Date of Patent: May 2, 2000Assignee: Elf Exploration ProductionInventors: Jean Nougayrede, Andre Philippe
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Patent number: 6017507Abstract: A process is provided for reducing the amount of hydrogen sulfide present in a tail gas from a sulfur recovery process. The hydrogen sulfide contaminated gas along with a gas containing free oxygen is passed through a series of hydrogen sulfide oxidation zones containing an oxidation catalyst, such as one or more oxides or salts of Ni, Co, Fe, Cu, Ag, Mn, Mo, Cr, W and V, deposited on a support, such as bauxite, activated alumina, titania and activated carbon. The initial and intermediate catalyst beds are operated adiabatically by injecting a substoichiometric amount of oxygen into the gas to be treated with respect to the amount of hydrogen sulfide present in the gas so that the temperature does not exceed 150.degree. C. The final catalyst bed is operated under conditions such that a superstoichiometric amount of oxygen is injected into the gas with respect to the hydrogen sulfide and cooling is provided so that the temperature does not exceed 150.degree. C.Type: GrantFiled: August 25, 1997Date of Patent: January 25, 2000Assignee: Elf Aquitaine ProductiionInventors: Jean Nougayrede, Andre Philippe, Sabine Savin-Poncet
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Patent number: 5607657Abstract: A process is disclosed for the removal of sulphur compounds from a residual gas so as to obtain a purified gas stream substantially free of sulphur compounds, which process comprises subjecting the residual gas to a combined hydrogenation and hydrolysis, cooling the gas to a temperature whereby water vapor in the gas is not condensed, mixing the gaseous effluent with a gas containing free oxygen, contacting the cooled gaseous effluent and the gas containing free oxygen with a catalyst for selective oxidation of H.sub.2 S to sulphur, and depositing substantially all of the sulphur formed on the catalyst.Type: GrantFiled: February 14, 1995Date of Patent: March 4, 1997Assignee: Elf Aquitaine ProductionInventors: Andre Philippe, Jean Nougayrede, Georges Kvasnikoff
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Patent number: 5508013Abstract: A process is provided for the production of sulphur from at least one sour gas containing H.sub.2 S and a gaseous or liquid fuel effluent, of the type comprising a thermal reaction step, wherein the thermal reaction step is conducted by performing the combustion of the gaseous or liquid fuel effluent in a first zone of the thermal reaction stage with a quantity of a gas containing free oxygen in excess in relation to the theoretical quantity needed for a complete combustion of the fuel effluent, the excess being smaller than the theoretical proportion of gas containing free oxygen needed to oxidize to SO.sub.2 approximately one third of the H.sub.Type: GrantFiled: August 22, 1994Date of Patent: April 16, 1996Assignee: Elf Aquitaine ProductionInventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 5494650Abstract: A process is provided for the improvement of the sulphur yield of an assembly which produces sulphur from H.sub.2 S and which consists of a sulphur plant (1), an oxidation and hydrolysis unit (2) and a purification unit (3). The sulphur plant in producing sulphur provides a residual gas which incorporates H.sub.2 O, COS and/or CS.sub.2 and H.sub.2 S and SO.sub.2 in a mol ratio of H.sub.2 S:SO.sub.2 >2:1. The residual gas passes into the hydrolysis unit on a H.sub.2 S oxidation and COS and CS.sub.2 hydrolysis catalyst which functions between 180.degree. C. and 700.degree. C., in the presence of air, thus producing a residual gas free of COS and CS and incorporating H.sub.2 S and SO.sub.2 in a mol ratio which is kept equal to 2:1 by regulating the air flow. The residual gas is introduced into the purification unit in which H.sub.2 S and SO.sub.2 are made to react in order to produce sulphur and to obtain a purified residual gas.Type: GrantFiled: July 14, 1993Date of Patent: February 27, 1996Assignee: Societe Nationale Elf Aquitaine (Production)Inventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 5185140Abstract: Process for removing sulphur-containing compounds from a residual gas with recovery of said compounds in the form of sulphur, wherein the residual gas is subjected to a treatment comprising a hydrogenation and a hydrolysis phase to provide the sulphur-containing compounds in the unique form of H.sub.2 S, a cooling step with water condensation, a catalytic oxidation of H.sub.2 S in CLAUS stoechiometry and a catalytic CLAUS reaction phase with deposition of sulphur on the CLAUS catalyst and periodic regeneration of the sulphur-laden catalyst and cooling of the regenerated catalyst. The gas used for the regeneration and for the cooling is tapped from the gas effluent supplied to the catalytic oxidation and the gas issued from the regeneration is reintroduced at least in part into said gas effluent after separation of the sulphur containing therein. Application to the purification of residual gases issued from CLAUS sulphur units.Type: GrantFiled: March 25, 1991Date of Patent: February 9, 1993Assignee: Elf Aquitaine ProductionInventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 5132098Abstract: Process for removing sulfur compounds contained in a residual gas with recovery of said compounds in the form of sulfur, wherein a gas obtained from a residual gas containing H.sub.s S and SO.sub.2 and having a temperature lower than 160.degree. C. is subjected to a catalytic CLAUS reaction phase with deposition of sulfur on the catalyst and periodic regeneration of the sulfur-laden catalyst and cooling of the regenerated catalyst. The gas brought in contact with the CLAUS catalyst is produced by subjecting the residual gas to a hydrogenation and hydrolysis treatment to provide the sulfur compounds in the unique form of H.sub.2 S and to cooling with water separation by condensation and then to catalytic oxidation of H.sub.2 S in CLAUS stoichiometry with cooling of the gas stream obtained from the oxidation step under 160.degree. C. in order to separate the sulfur by condensation. Application to the purification of the residual gases emitted by CLAUS sulfur plants.Type: GrantFiled: August 16, 1990Date of Patent: July 21, 1992Assignee: Societe Nationale Elf Aquitaine (Production)Inventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 5077031Abstract: Catalytic process for producing sulphur from H.sub.2 S-containing acid gas wherein the acid gas is subjected to a catalytic oxidation in CLAUS stoichiometry and to a catalytic CLAUS reaction phase with deposition of sulphur on the catalyst with periodic regeneration of the sulphur-laden catalyst and cooling of the regenerated catalyst. The gas used for the regeneration and for the cooling is tapped from the acid gas supplied to the catalytic oxidation and the gas issued from the regeneration is reintroduced into said acid gas after separation of the sulphur contained therein. The process is particularly applicable to the treatment.Type: GrantFiled: January 12, 1990Date of Patent: December 31, 1991Assignee: Societe Nationale Elf AquitaineInventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 4980146Abstract: Process for removing sulfur compounds contained in a residual gas with recovery of said compounds in the form of sulfur, wherein a gas obtained from a residual gas containing H.sub.2 S and SO.sub.2 and having a temperature lower than 160.degree. C. is subjected to a catalytic CLAUS reaction phase with deposition of sulfur on the catalyst and periodic regeneration of the sulfur-laden catalyst and cooling of the regenerated catalyst. The gas brought in contact with the CLAUS catalyst is produced by subjecting the residual gas to a hydrogenation and hydrolysis treatment to provide the sulfur compounds in the unique form of H.sub.2 S and to cooling with water separation by condensation and then to catalytic oxidation of H.sub.2 S in CLAUS stoichiometry with cooling of the gas stream obtained from the oxidation step under 160.degree. C. in order to separate the sulfur by condensation. Application to the purification of the residual gases emitted by CLAUS sulfur plants.Type: GrantFiled: June 25, 1987Date of Patent: December 25, 1990Assignee: Societe Nationale Elf Aquitaine (Production)Inventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe
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Patent number: 4894216Abstract: Catalytic process for producing sulphur from H.sub.2 S-containing acid gas wherein the acid gas is subjected to a catalytic oxidation of CLAUS stoichiometry and to a catalytic CLAUS reaction phase with deposition of sulphur on the catalyst with periodic regeneration of the sulphur-laden catalyst and cooling of the regenerated catalyst. The gas used for the regeneration and for the cooling is tapped from the acid gas supplied to the catalytic oxidation and the gas issued from the regeneration is reintroduced into said acid gas after separation of the sulphur contained therein. The process is particularly applicable to the treatment of acid gases having a low H.sub.2 S content.Type: GrantFiled: June 25, 1987Date of Patent: January 16, 1990Assignee: Societe Nationale Elf Aquitaine (Production)Inventors: Georges Kvasnikoff, Jean Nougayrede, Andre Philippe