Patents by Inventor Jacques Dugue
Jacques Dugue 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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Publication number: 20060249101Abstract: A steam generator includes at least two successive combustion hearths with at least one burner supplied with fuel and oxidizer, a vaporization zone comprising a vaporization exchanger, a superheating zone comprising a superheating exchanger, a preheating zone comprising a preheating exchanger and a collecting drum, Each hearth includes at least one vaporization exchanger.Type: ApplicationFiled: January 21, 2004Publication date: November 9, 2006Inventors: Tidjani Niass, Nicolas Boudet, Gerard Martin, Jacques Dugue, Jacques Segret, Maguelonne Hammel, Umesh Goel, Valerie Naudet
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Patent number: 7013022Abstract: The invention relates to a method of processing images of at least one flame or of a scene in a furnace, characterized in that it comprises at least one sliding statistical processing of the images of the flame which are captured in the course of a sliding time interval, so as to eliminate the fast fluctuations therefrom.Type: GrantFiled: September 20, 2001Date of Patent: March 14, 2006Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jacques Dugue, Lynda Mouloudj, Isabelle Hibon, Richard Soula
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Patent number: 6910879Abstract: A method of combustion and a burner assembly wherein at least one fuel and at least one oxidizer are injected separately. The oxidizer comprises a primary oxidizer stream and a secondary oxidizer stream. The primary oxidizer stream is divided into at least two portions. One portion is injected close to the fuel whereby generating a first incomplete combustion. The second portion is injected downstream of the first injection point with the fuel source consisting of the remaining uncombusted fuel of the first incomplete combustion in addition to the fuel. The secondary oxidizer stream is injected downstream from the primary oxidizer stream, whereby resulting in combustion with the unreactive fuel gases remaining from the first combustion.Type: GrantFiled: April 4, 2002Date of Patent: June 28, 2005Assignee: L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Jacques Dugue, Thierry Legiret, Rémi Pierre Tsiava, Olivier Louedin
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Publication number: 20040231586Abstract: The invention concerns a method for mixing at least two reactant gases capable of reacting together in a mixer, wherein the retention time of the gases in the mixer is not more than the chemical reaction time of the gases to be mixed, and the standard deviation of retention time distribution (e) represents not more than 20 % of the average retention time (tm) of the retention time distribution. Said mixer comprises a first divergent truncated part (2) and a second straight cylindrical part (3). An orifice (4) located at the end of the first part enables axial injection of at least one gas. Orifices (5) are drilled in the wall of the first part for jet-type injection of the or other gases in the main flow.Type: ApplicationFiled: March 12, 2004Publication date: November 25, 2004Inventors: Jacques Dugue, Fabien Lilly
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Publication number: 20040157178Abstract: A method of combustion and a burner assembly wherein at least one fuel and at least one oxidizer are injected separately. The oxidizer comprises a primary oxidizer stream and a secondary oxidizer stream. The primary oxidizer stream is divided into at least two portions. One portion is injected close to the fuel whereby generating a first incomplete combustion. The second portion is injected downstream of the first injection point with the fuel source consisting of the remaining uncombusted fuel of the first incomplete combustion in addition to the fuel. The secondary oxidizer stream is injected downstream from the primary oxidizer stream, whereby resulting in combustion with the unreactive fuel gases remaining from the first combustion.Type: ApplicationFiled: April 12, 2004Publication date: August 12, 2004Inventors: Jacques Dugue, Thierry Legiret, Remi Pierre Tsiava, Olivier Louedin
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Publication number: 20020051579Abstract: The invention relates to a method of processing images of at least one flame or of a scene in a furnace, characterized in that it comprises at least one sliding statistical processing of the images of the flame which are captured in the course of a sliding time interval, so as to eliminate the fast fluctuations therefrom.Type: ApplicationFiled: September 20, 2001Publication date: May 2, 2002Inventors: Jacques Dugue, Lynda Mouloudj, Isabelle Hibon, Richard Soula
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Patent number: 6375456Abstract: Combustion process especially applicable to cement works, in which process it is desired to use fuels which are difficult to ignite. To do so, a flame comprising a primary zone and a secondary zone is created. The hot primary zone is created using an oxy-fuel flame, which makes it possible to preheat the fuel which is difficult to ignite so as to raise it to the suitable temperature in the secondary zone where it burns, with air, in order to create the main flame. Applications: cement, metallurgy, glass, etc.Type: GrantFiled: June 22, 2000Date of Patent: April 23, 2002Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jacques Dugue, Ovidiu Marin, Thierry Borissoff, Dora Sophia Alves, Michel Viardot
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Patent number: 6360677Abstract: An injector for a burner is provided in which assemblies for injecting the main and auxiliary fuels and the oxidizer are arranged radially, one around the other, about a longitudinal axis. The injector has a main-fuel outlet, an oxidizer outlet, and an auxiliary-fuel outlet on the respective assemblies. The injector can be used in incinerator applications, such as in methods for producing clinker.Type: GrantFiled: December 21, 1999Date of Patent: March 26, 2002Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Dominique Robillard, Thierry Borissoff, Celso Zerbinatti, Dora Sophia Alves, Jacques Dugue
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Publication number: 20010044089Abstract: A kiln is provided with oxidant injection locations upstream of air blowers which blow air into the kiln. The addition of oxygen into the kiln increases the cooling capacity of a clinker cooler, and enhances combustion in the kiln.Type: ApplicationFiled: July 9, 2001Publication date: November 22, 2001Inventors: Ovidiu Marin, Mahendra L. Joshi, Olivier Charon, Jacques Dugue
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Patent number: 6318278Abstract: In this process the material is passed through a precalcination device equipped with at least one fuel injector at the outlet of which a fuel injection zone is formed, then the at least partially calcined material is passed into the rotary kiln which at its downstream end, is equipped with a primary combustion unit. At least one oxygen rich fluid with an oxygen concentration by volume higher than that of the products of combustion from the rotary kiln is injected near to the injection zone so that the oxygen rich fluid can supply from 1% to 40%, and preferably form 1 to 10% of the stoichiometric amount of oxygen needed for the combustion of the fuel injected by the injector.Type: GrantFiled: June 22, 2000Date of Patent: November 20, 2001Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jacques Dugue, Thierry Borissoff, Ovidiu Marin, Ivan Milosavljevic, Dora Sophia Alves, Michel Viardot
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Patent number: 6309210Abstract: A kiln is provided with oxidant injection locations upstream of air blowers which blow air into the kiln. The addition of oxygen into the kiln increases the cooling capacity of a clinker cooler, and enhances combustion in the kiln.Type: GrantFiled: March 16, 1999Date of Patent: October 30, 2001Assignee: L'Air Liquide, Societe Anonyme pour l'etude et, l'Exploitation des Procedes Georges ClaudeInventors: Ovidiu Marin, Mahendra L. Joshi, Olivier Charon, Jacques Dugue
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Patent number: 6241514Abstract: A kiln adapted to recycle kiln dust includes a recycle dust pipe in fluid communication with an oxidant stream to increase the concentration of oxygen in the fluidized recycle dust before the recycle dust stream is directed into the kiln flame. Increasing the oxygen concentration in the recycle dust stream improves the efficiency of the recycling process. A supplemental fuel stream may be introduced into the recycle dust stream to provide an additional flame to preheat the recycle dust stream before the recycle dust stream is directed into the kiln flame.Type: GrantFiled: September 15, 1999Date of Patent: June 5, 2001Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc.Inventors: Mahendra L. Joshi, Ovidiu Marin, Olivier Charon, Jacques Dugue
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Patent number: 6196831Abstract: The invention relates to a combustion process for burning a fuel, in which the point of injection of each main oxidizer jet (7, 8) with respect to the point of injection of a fuel jet (4) closest to it is arranged a distance D away satisfying the following relation: D A > 5 ⁢ ⁢ and / or ⁢ ⁢ D B > 5 D being the minimum distance between the outer edge of the relevant oxidizer jet (7, 8) and the outer edge of the fuel jet (4) closest to it, at their respective points of injection, A and B being, respectively, the cross section of the main jet (7, 8) of the oxidizer and the cross section of the fuel jet, considered at their respective points of injection.Type: GrantFiled: September 2, 1999Date of Patent: March 6, 2001Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Jacques Dugue, Jean-Michel Samaniego, Bernard Labegorre, Olivier Charon
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Patent number: 6116896Abstract: A system and method for increasing the amount of oxygen in a kiln chamber is disclosed. The radial surface of a rotatable kiln is provided with at least one oxidant injection port extending through the radial surface into the kiln chamber. A cam is connected to the radial surface adjacent the oxidant injection port. A valve assembly including a valve chamber in fluid communication with an oxidant supply is mounted adjacent the kiln substantially in fixed spatial relation with the rotatable kiln body. The valve assembly includes a follower member adapted to contact a surface to the cam to actuate the valve assembly. Rotation of the kiln body brings the cam into contact with the follower member, thereby actuating the oxidant injection assembly, and injecting oxidant through the injection port into the kiln chamber.Type: GrantFiled: September 15, 1999Date of Patent: September 12, 2000Assignees: Air Liquide America Inc., L'Air Liquide, Societe Anonyme pour l'Etude Et, l'Exploitation des Procedes Georges ClaudeInventors: Mahendra L. Joshi, Ovidiu Marin, Olivier Charon, Jacques Dugue
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Patent number: 6077072Abstract: Superior heat transfer in a kiln is achieved by the use of at least one injector which injects both an oxidant, preferably containing oxygen, and a secondary fuel into the kiln. The injectors are provided so that the energy resulting from the combustion of the different fuels in the kiln heats specified regions of the kiln, without causing hot spots on the refractory walls. A firing scheme is described for the oxygen and fuels which allows an increase in the amount of heat released toward the load, resulting in significant increases in kiln efficiency and production. Low quality fuels may be used, as well as using and/or recycling more insufflated dust, without an adverse effect on the main flame.Type: GrantFiled: September 18, 1998Date of Patent: June 20, 2000Assignees: American Air Liquide Inc., L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Ovidiu Marin, Mahendra L. Joshi, Olivier Charon, Jacques Dugue