Patents Assigned to Eurecat
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Patent number: 8377839Abstract: The present invention provides a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.Type: GrantFiled: October 5, 2009Date of Patent: February 19, 2013Assignee: Eurecat S.A.Inventors: Pauline Galliou, Eric Nagy, Pierre Dufresne
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Patent number: 8283278Abstract: The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: at least a first step of depositing, on the surface of the catalyst, one or more sulfurization auxiliaries of formula (I): and at least a second step of placing the catalyst in contact with a sulfur-containing gaseous mixture containing hydrogen and a sulfur compound.Type: GrantFiled: September 10, 2010Date of Patent: October 9, 2012Assignee: Eurecat S.A.Inventors: Pierre Dufresne, Eric Nagy, Pauline Galliou
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Patent number: 8278234Abstract: A subject-matter of the present invention is a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.Type: GrantFiled: October 6, 2009Date of Patent: October 2, 2012Assignee: Eurecat S.A.Inventors: Pauline Galliou, Eric Nagy, Pierre Dufresne
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Publication number: 20120231947Abstract: The invention provides a process for the off site regeneration of a solid catalyst, comprising two consecutive steps: a first step of washing the catalyst using one or more fluid(s) in the supercritical state, so as to extract from the catalyst at least a portion of the hydrocarbons present at the surface of the latter, followed by a second step of combustion of at least a portion of the coke present at the surface of the said catalyst by a heat treatment of the latter in the presence of oxygen and at a temperature ranging from 300° C. to 600° C.Type: ApplicationFiled: January 6, 2012Publication date: September 13, 2012Applicant: Eurecat S.A.Inventors: Philippe Kerleau, Pierre Dufresne
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Publication number: 20110098175Abstract: The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: at least a first step of depositing, on the surface of the catalyst, one or more sulfurization auxiliaries of formula (I): and at least a second step, carried out after the first step, of placing the catalyst in contact with a sulfur-containing gaseous mixture containing hydrogen and a sulfur compound. This process does not comprise the deposit of any carbon sources other than the auxiliary of formula (I).Type: ApplicationFiled: September 10, 2010Publication date: April 28, 2011Applicant: Eurecat S.A.Inventors: Pierre Dufresne, Eric Nagy, Pauline Galliou
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Publication number: 20110092360Abstract: The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: at least a first step of depositing, on the surface of the catalyst, one or more sulfurization auxiliaries of formula (I): and at least a second step of placing the catalyst in contact with a sulfur-containing gaseous mixture containing hydrogen and a sulfur compound.Type: ApplicationFiled: September 10, 2010Publication date: April 21, 2011Applicant: Eurecat S.A.Inventors: Pierre Dufresne, Eric Nagy, Pauline Galliou
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Patent number: 7713905Abstract: The present invention concerns a process for “ex situ” treatment of a hydrogenation catalyst containing nickel prior to use, consisting of carrying out three steps, namely bringing the catalyst into contact with at least one sulphur-containing compound or agent (the step termed selectivation), treating said catalyst with hydrogen at a temperature of more than 250° C. (the step termed reduction) and passivation of said catalyst.Type: GrantFiled: April 28, 2004Date of Patent: May 11, 2010Assignee: Eurecat S.A.Inventors: Pierre Dufresne, Franck Labruyere, François Locatelli
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Publication number: 20100105540Abstract: The present invention provides a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.Type: ApplicationFiled: October 5, 2009Publication date: April 29, 2010Applicant: EURECAT S.A.Inventors: Pauline Galliou, Eric Nagy, Pierre Dufresne
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Publication number: 20100105541Abstract: A subject-matter of the present invention is a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.Type: ApplicationFiled: October 6, 2009Publication date: April 29, 2010Applicant: EURECAT S.A.Inventors: Pauline Galliou, Eric Nagy, Pierre Dufresne
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Patent number: 7582587Abstract: The present invention concerns a process for ex situ oxidizing passivation of hydrocarbon hydroconversion catalysts, in particular for hydrotreatment in their sulphurized states, in which the sulphurized catalyst undergoes two treatments: contact with an oxidizing gas stream, and contact with an organic liquid (for example hydrocarbon) which partially fills its pores.Type: GrantFiled: February 6, 2004Date of Patent: September 1, 2009Assignee: Eurecat S.A.Inventors: Pierre Dufresne, Franck Labruyere
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Patent number: 7501376Abstract: This invention relates to a process of ex-situ oxidizing passivation of catalysts for hydroconversion of hydrocarbons and especially of hydrotreating, in their sulfide state, process in which the sulfurized catalyst is brought into contact with an oxidizing gas flow that can be dry or wet, during heat treatment at more than 50° C. This invention, for passivation of sulfide phases, can be equally well implemented for a process that takes place in a fixed bed or a fluidized bed, for example a moving bed.Type: GrantFiled: September 25, 2003Date of Patent: March 10, 2009Assignee: Eurecat S.A.Inventors: Pierre Dufresne, Franck Labruyere
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Patent number: 7368409Abstract: A process for regenerating a palladium catalyst from a catalytic reaction where the catalyst is contaminated with at least carbon. The regenerating is conducted prior to any heating step under oxidizing conditions in the regenerating section. The regenerating involves at least one heating step under a hydrogen-containing reducing atmosphere and under conditions sufficient to lower the content of carbon in the palladium catalyst.Type: GrantFiled: May 9, 2003Date of Patent: May 6, 2008Assignee: Europeene de Retraitement de Catalyseurs-EurecatInventors: James Robinson, Nilanjan Brahma, Georges Mendakis, François Locatelli, Pierre Dufresnce
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Patent number: 6753291Abstract: The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an organic additive wherein the catalyst composition is first contacted with an organic liquid, followed by the catalyst being contacted with hydrogen and a sulfur-containing compound in the gaseous phase, wherein less than about 40%, preferably less than about 35%, more preferably less than about 25%, most preferably less than about 15%, of the sulfur present in the sulfided catalyst is added with the organic liquid. The process of the present invention makes it possible to use additive-containing catalysts without loss of activity in units which cannot effect gas phase start-up or are required to carry out a pressure test. The organic liquid may be a hydrocarbon with a boiling range of about 150-500° C., preferably gasoline, white spirit, diesel, gas oil, mineral lube oil, or white oil.Type: GrantFiled: April 10, 2001Date of Patent: June 22, 2004Assignees: Akzo Nobel N.V., Eurecat Europeenne de Retraltement de Catalysateur S.A.Inventors: Sonja Eijsbouts, Frans Lodewijk Plantenga, Pierre Dufresne, Franck Labruyere, Leendert Arie Gerritsen
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Patent number: 6559092Abstract: The present invention concerns a process for sulphurising a hydrocarbon hydrotreatment catalyst in the presence of hydrogen and at least one sulphur-containing compound. The process is characterized in that the catalyst comprises a carbon-containing compound the major portion of which is not leachable deposited in its pores. The invention is of particular application to sulphurization carried out off-site.Type: GrantFiled: August 17, 2000Date of Patent: May 6, 2003Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Pierre Dufresne, Franck Labruyere, Michel Lacroix, Christophe Geantet, Cecile Glasson
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Publication number: 20020098971Abstract: Process for the regeneration of a solid catalyst or of a solid adsorbent wherein the catalyst or the adsorbent is used in the form of a bed in a regeneration zone, in which bed the catalyst is in motion, said process comprising at least one heating step under a reductive atmosphere.Type: ApplicationFiled: January 19, 2001Publication date: July 25, 2002Applicant: Europeenne De Retraitement De Catalyseurs-EurecatInventors: James Robinson, Nilanjan Brahma, Georges Mendakis, Francois Locatelli, Pierre Dufresnce
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Patent number: 6417134Abstract: The invention relates to a process for the ex-situ presulfuration of a catalyst for the hydroconversion of hydrocarbons in the presence of hydrogen and of at least one sulfurated compound. It is characterized in that the catalyst is also brought into contact with at least one hydrocarbon compound.Type: GrantFiled: October 12, 1999Date of Patent: July 9, 2002Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Pierre Dufresne, Franck Labruyere
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Patent number: 6294498Abstract: Process for passivation of a heterogenous catalyst of refining reactions or hydrocarbon hydroconversion reactions, characterized in that the external surface of the particles of said heterogeneous catalyst is coated with a protective layer that is made of a particularly inert material which can be eliminated in the reaction zone under the conditions of the reaction.Type: GrantFiled: August 11, 1998Date of Patent: September 25, 2001Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Joan Darcissac, Franck Labruyere, Nilanjan Brahma, Pierre Dufrense
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Patent number: 6100216Abstract: A process for presulfurizing a hydrocarbon treatment catalyst and/or for preconditioning a catalyst, comprising one or two stages of incorporating sulfur into the pores of a hydrocarbon conversion catalyst conducted off-site in at least one zone that contains a catalyst, preferably in motion, and with either suilirated hydrogen (H.sub.2 S), sulfur, or a sulfur compound capable of evolving nascent suilirated hydrogen.Type: GrantFiled: January 16, 1997Date of Patent: August 8, 2000Assignee: Europeenne de Retraitement de Catalyseurs EurecatInventors: Pierre Dufresne, Nilanjan Brahma, Jean Darcissac, Franck Labruyere
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Patent number: 6059956Abstract: A process comprising incorporation of a sulphuration agent into a hydrocarbon treatment catalyst to a greater or lesser extent into the pores of the catalyst, the agent being selected from, for example, elemental sulphur and organic polysulphides, incorporation being effected in the presence of a solvent which is an olefinic or olefinic cut constituent, for example a vegetable oil, or a similar constituent, the process comprising hydrogen treatment of the catalyst at between 150.degree. C. and 700.degree. C., followed by a passivation step.Type: GrantFiled: October 10, 1995Date of Patent: May 9, 2000Assignee: Europeene de Retraitment de Catalyseurs EurecatInventor: Pierre Dufresne
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Patent number: 5985787Abstract: The invention concerns a novel presulphuration process for a hydrocarbon conversion catalyst. Presulphuration is preferably carried out offsite (ex-situ). The catalyst presulphuration process is characterized in that a presulphuration agent is used which contains (a) at least one first sulphur compound with a decomposition point T1 of less than 220.degree. C. and (b) at least one second sulphur compound with a decomposition point greater than about 220.degree. C.Type: GrantFiled: June 14, 1994Date of Patent: November 16, 1999Assignee: Europenne De Retraitement De Catalyseurs EurecatInventors: Pierre Dufresne, Nilanjan Brahma, Stephen R. Murff