Patents by Inventor Rejane Dastillung

Rejane Dastillung 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).

  • Publication number: 20230373892
    Abstract: The invention relates to a process for the dehydrogenation of a feedstock comprising ethanol, using at least one multitubular reactor advantageously comprising a plurality of tubes comprising at least one dehydrogenation catalyst, and a calender, said feedstock being introduced into the tubes in gas form, at an inlet temperature of greater than or equal to 240° C., a pressure between 0.1 and 1.0 MPa, and a WWH between 2 and 15 h?1, wherein a heat-transfer fluid circulates in said calender at a flow rate such that the weight ratio of said heat-transfer fluid relative to said feedstock is greater than or equal to 1.0, and such that said heat-transfer fluid is introduced into said calender in gas form at an inlet temperature of greater than or equal to 260° C. and at an inlet pressure of greater than or equal to 0.10 MPa, and less than or equal to 1.10 MPa, and leaves the calender at least partly in liquid form.
    Type: Application
    Filed: September 13, 2021
    Publication date: November 23, 2023
    Applicants: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jean-Christophe GABELLE, Vincent COUPARD, Rejane DASTILLUNG, Mickael MEJEAN
  • Patent number: 11731918
    Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 4 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing three regeneration loops.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: August 22, 2023
    Assignees: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Kirill Drobyshev, Rejane Dastillung, Jean-Christophe Gabelle, Matthieu Rolland
  • Patent number: 11401225
    Abstract: The invention relates to a process for treating an hydroalcoholic feedstock comprising ethanol and butanol in order to produce an ethanol-rich effluent, a water-rich effluent and a butanol-rich effluent, comprising a) a water-ethanol separation step comprising a distillation column fed with said hydroalcoholic feedstock and comprising at least 14 theoretical plates, a molar reflux ratio of less than or equal to 1.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: August 2, 2022
    Assignees: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Beatrice Fischer, Rejane Dastillung
  • Patent number: 11401219
    Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 2 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing a regeneration loop for the inert gas and at least one regeneration loop for the gas streams comprising oxygen.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: August 2, 2022
    Assignees: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Kirill Drobyshev, Rejane Dastillung, Jean-Christophe Gabelle, Matthieu Rolland
  • Publication number: 20220055969
    Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 2 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing a regeneration loop for the inert gas and at least one regeneration loop for the gas streams comprising oxygen.
    Type: Application
    Filed: December 13, 2019
    Publication date: February 24, 2022
    Applicants: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Kirill DROBYSHEV, Rejane DASTILLUNG, Jean-Christophe GABELLE, Matthieu ROLLAND
  • Publication number: 20220048833
    Abstract: The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 4 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing three regeneration loops.
    Type: Application
    Filed: December 13, 2019
    Publication date: February 17, 2022
    Applicants: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Kirill DROBYSHEV, Rejane DASTILLUNG, Jean-Christophe GABELLE, Matthieu ROLLAND
  • Patent number: 11141677
    Abstract: Liquid-liquid extraction and distillation of a liquid feedstock of at least ethanol, water, acetaldehyde and at least one hydrocarbon-based impurity with a boiling point of between 20° C. and 100° C. at atmospheric pressure, or which generates, with at least one of the compounds of the liquid feedstock and/or with the organic extraction solvent and/or with the aqueous back-washing solvent, an azeotrope and a partition coefficient of between 0.1 and 5 at any point in a back-washing (BW) column of the extraction section, by (a) a liquid-liquid extraction step a washing (W) column, a back-washing (BW) column and at least one injection (F2) of a cut withdrawn in step b), located in the top half of the back-washing column, (b) distillation of an aldehyde and ethanol separation producing at least one aldehyde-rich effluent, one ethanol-rich effluent and one water-rich effluent.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: October 12, 2021
    Assignees: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Frederic Augier, Damien Leinekugel Le Cocq, Rejane Dastillung, Pierre Balz
  • Publication number: 20210230087
    Abstract: The invention relates to a process for treating an hydroalcoholic feedstock comprising ethanol and butanol in order to produce an ethanol-rich effluent, a water-rich effluent and a butanol-rich effluent, comprising a) a water-ethanol separation step comprising a distillation column fed with said hydroalcoholic feedstock and comprising at least 14 theoretical plates, a molar reflux ratio of less than or equal to 1.
    Type: Application
    Filed: May 21, 2019
    Publication date: July 29, 2021
    Applicants: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Beatrice FISCHER, Rejane DASTILLUNG
  • Publication number: 20200398181
    Abstract: Liquid-liquid extraction and distillation of a liquid feedstock of at least ethanol, water, acetaldehyde and at least one hydrocarbon-based impurity with a boiling point of between 20° C. and 100° C. at atmospheric pressure, or which generates, with at least one of the compounds of the liquid feedstock and/or with the organic extraction solvent and/or with the aqueous back-washing solvent, an azeotrope and a partition coefficient of between 0.1 and 5 at any point in a back-washing (BW) column of the extraction section, by (a) a liquid-liquid extraction step a washing (W) column, a back-washing (BW) column and at least one injection (F2) of a cut withdrawn in step b), located in the top half of the back-washing column, (b) a distillation of an aldehyde and ethanol separation producing at least one aldehyde-rich effluent, one ethanol-rich effluent and one water-rich effluent.
    Type: Application
    Filed: January 25, 2019
    Publication date: December 24, 2020
    Applicants: IFP Energies nouvelles, COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Frederic AUGIER, Damien LEINEKUGEL LE COCQ, Rejane DASTILLUNG, Pierre BALZ
  • Patent number: 10766846
    Abstract: The invention relates to a method for producing butadiene that is fed with a butanediol feedstock, with said method comprising at least: a) An esterification step comprising: A reaction section; A separation section producing a butanediol diester effluent, a water effluent, and a carboxylic acid effluent; b) An esterification pyrolysis step; c) A separation step comprising at least: A cooling section producing a liquid pyrolysis effluent and a vapor pyrolysis effluent; A gas-liquid washing section that is fed at the top with a fraction of the carboxylic acid effluent that is obtained from the separation section of step a) and at the bottom with said vapor pyrolysis effluent and producing at the top a butadiene effluent and at the bottom a washing effluent; in which a carboxylic-acid-rich stream comprising at least a portion of the liquid pyrolysis effluent is recycled to step a); d) A separation step.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: September 8, 2020
    Assignees: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Marc Jacquin, Nuno Pacheco, Rejane Dastillung, Sophie Couderc, Claire Fauvarque Nuytien
  • Patent number: 10654763
    Abstract: The invention relates to a process for producing butadiene from an ethanol feedstock comprising a step of converting ethanol into butadiene, a step of separating the reactants into a hydrated butadiene effluent, an impurities effluent and an ethanol-butadiene effluent, a separation step that separates the ethanol-butadiene effluent into a butadiene distillate and a contaminated reactants effluent, a step of purifying the butadiene by extractive distillation and an effluent treatment step.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 19, 2020
    Assignees: IFP Energies nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Rejane Dastillung, Sophie Couderc, Olivier Thinon
  • Patent number: 10647624
    Abstract: The invention relates to a method for producing 1,3-butanediene from a butanediol feedstock that includes: a) A step for esterification of butanediol by a carboxylic acid to form the corresponding diester; b) A step for pyrolysis of the diester effluent obtained from step a); c) A step for distillation fed by at least the carboxylic acid effluent obtained from step a), and producing an aqueous distillate and a carboxylic acid residue; d) A step for drying the carboxylic acid that is fed at least by the carboxylic acid residue obtained from step c) and producing a water effluent and a carboxylic acid product that feeds step a).
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 12, 2020
    Assignees: IFP Energies nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Nuno Pacheco, Margarita Dorato, Marc Jacquin, Rejane Dastillung, Sophie Couderc
  • Patent number: 10501391
    Abstract: The invention relates to a process for producing butadiene from an ethanol feedstock, comprising a step of converting the ethanol into butadiene, a distillation step, a step of washing with water, a butadiene purification step comprising at least one section for separating the 1-butene by extractive distillation and a final distillation section fed with the topped butadiene distillate, separating at the top a purified butadiene effluent and at the bottom a butene residue, and an effluent treatment step.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: December 10, 2019
    Assignees: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Sophie Couderc, Rejane Dastillung, Olivier Thinon
  • Publication number: 20190300470
    Abstract: The invention relates to a method for producing butadiene that is fed with a butanediol feedstock, with said method comprising at least: a) An esterification step comprising: A reaction section; A separation section producing a butanediol diester effluent, a water effluent, and a carboxylic acid effluent; b) An esterification pyrolysis step; c) A separation step comprising at least: A cooling section producing a liquid pyrolysis effluent and a vapor pyrolysis effluent; A gas-liquid washing section that is fed at the top with a fraction of the carboxylic acid effluent that is obtained from the separation section of step a) and at the bottom with said vapor pyrolysis effluent and producing at the top a butadiene effluent and at the bottom a washing effluent; in which a carboxylic-acid-rich stream comprising at least a portion of the liquid pyrolysis effluent is recycled to step a); d) A separation step.
    Type: Application
    Filed: October 12, 2017
    Publication date: October 3, 2019
    Applicants: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Marc JACQUIN, Nuno PACHECO, Rejane DASTILLUNG, Sophie COUDERC, Claire FAUVARQUE NUYTIEN
  • Patent number: 10358396
    Abstract: A process for the production of butadiene from an ethanol feed having at least 80% by weight of ethanol, A) converting ethanol into acetaldehyde B) converting an ethanol/acetaldehyde mixture into butadiene, C1) hydrogen treatment, D1) butadiene extraction, a first butadiene purification D2), a subsequent butadiene purification D3), an effluent treatment E1), E2) eliminating impurities and brown oils and F) scrubbing with water.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 23, 2019
    Assignees: IFP Energies nouvelles, Compagnie Generale des Etablissements Michelin, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Rejane Dastillung, Beatrice Fischer, Marc Jacquin, Raphael Huyghe
  • Publication number: 20190202756
    Abstract: The invention relates to a process for producing butadiene from an ethanol feedstock comprising a step of converting ethanol into butadiene, a step of separating the reactants into a hydrated butadiene effluent, an impurities effluent and an ethanol-butadiene effluent, a separation step that separates the ethanol-butadiene effluent into a butadiene distillate and a contaminated reactants effluent, a step of purifying the butadiene by extractive distillation and an effluent treatment step.
    Type: Application
    Filed: June 26, 2017
    Publication date: July 4, 2019
    Applicants: IFP Energies nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Rejane DASTILLUNG, Sophie COUDERC, Olivier THINON
  • Publication number: 20190169095
    Abstract: The invention relates to a process for producing butadiene from an ethanol feedstock, comprising a step of converting the ethanol into butadiene, a distillation step, a step of washing with water, a butadiene purification step comprising at least one section for separating the 1-butene by extractive distillation and a final distillation section fed with the topped butadiene distillate, separating at the top a purified butadiene effluent and at the bottom a butene residue, and an effluent treatment step.
    Type: Application
    Filed: June 26, 2017
    Publication date: June 6, 2019
    Applicants: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Sophie COUDERC, Rejane DASTILLUNG, Olivier THINON
  • Publication number: 20180370869
    Abstract: The invention relates to a method for producing 1,3-butanediene from a butanediol feedstock that includes: a) A step for esterification of butanediol by a carboxylic acid to form the corresponding diester; b) A step for pyrolysis of the diester effluent obtained from step a); c) A step for distillation fed by at least the carboxylic acid effluent obtained from step a), and producing an aqueous distillate and a carboxylic acid residue; d) A step for drying the carboxylic acid that is fed at least by the carboxylic acid residue obtained from step c) and producing a water effluent and a carboxylic acid product that feeds step a).
    Type: Application
    Filed: December 13, 2016
    Publication date: December 27, 2018
    Applicants: IFP Energies nouvelles, Compagnie Generale des Etablissements Michelin
    Inventors: Nuno PACHECO, Margarita DORATO, Marc JACQUIN, Rejane DASTILLUNG, Sophie COUDERC
  • Patent number: 9950969
    Abstract: The invention concerns a process for the production of butadiene from an ethanol feed comprising at least 80% by weight of ethanol, comprising a step for conversion of ethanol to acetaldehyde, a step for the extraction of butadiene, a step for scrubbing gaseous by-products with water, a step for eliminating impurities and brown oils, a step for treating effluents, a first butadiene purification step, and a subsequent butadiene purification step, said ethanol feed being supplied to said butadiene extraction step, the arrangement of the steps and recycles allowing the recycles to be maximized and allowing the water and energy consumption to be minimized.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: April 24, 2018
    Assignees: IFP Energies Nouvelles, Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Rejane Dastillung, Beatrice Fischer, Marc Jacquin, Raphael Huyghe
  • Patent number: 9896630
    Abstract: A process for the conversion of oil feeds for the production of low sulphur fuels by fixed bed hydrodemetallization of the feed using an upstream system of fixed bed swing reactors; fixed bed hydrocracking of the hydrodemetallized effluent in the presence of a hydrocracking catalyst; separation in order to obtain a heavy fraction; hydrodesulphurization of the heavy fraction in which hydrogen is reinjected.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 20, 2018
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Wilfried Weiss, Isabelle Guibard, Rejane Dastillung