Patents by Inventor Renzo Bignazzi
Renzo Bignazzi 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: 9085759Abstract: The invention relates to a process for the production of algal biomass with a high lipid content, comprising: (a) the production of inocula in order to effect phase (b), in photoreactors; (b) the massive cultivation of the algal biomass in open ponds, inoculated with phase (a); (c) a thickening phase of the algal biomass, effected blandly; (d) an induction phase of the lipid production, wherein modules are used consisting of photoreactors or open ponds; (e) a separation phase of the biomass with a high lipid content.Type: GrantFiled: December 3, 2008Date of Patent: July 21, 2015Assignee: ENI S.p.A.Inventors: Giacomo Rispoli, Emiliano Fioravanti, Renzo Bignazzi, Ezio Nicola D'Addario, Francesca De Ferra, Federico Capuano
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Patent number: 8974671Abstract: Process for the treatment of the aqueous stream coming from the Fischer-Tropsch reaction comprising: feeding the aqueous stream containing the organic by products of the reaction to a distillation or stripping column; separation from the column of an aqueous stream enriched in alcohols having from 1 to 8 carbon atoms and other possible volatile compounds; feeding the aqueous stream containing the organic acids leaving the bottom of the distillation column to an ion exchange step wherein said aqueous stream is put in contact with an anionic exchange resin bed and the production of two outgoing aqueous streams: an aqueous stream (i) enriched in organic acids having from 1 to 8 carbon atoms; a purified aqueous stream (ii) with a low content of organic acids.Type: GrantFiled: May 28, 2009Date of Patent: March 10, 2015Assignee: ENI S.p.A.Inventors: Roberta Miglio, Renzo Bignazzi
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Publication number: 20110147313Abstract: Process for the treatment of the aqueous stream coming from the Fischer-Tropsch reaction comprising: feeding the aqueous stream containing the organic by products of the reaction to a distillation or stripping column; separation from the column of an aqueous stream enriched in alcohols having from 1 to 8 carbon atoms and other possible volatile compounds; feeding the aqueous stream containing the organic acids leaving the bottom of the distillation column to an ion exchange step wherein said aqueous stream is put in contact with an anionic exchange resin bed and the production of two outgoing aqueous streams: an aqueous stream (i) enriched in organic acids having from 1 to 8 carbon atoms; a purified aqueous stream (ii) with a low content of organic acids.Type: ApplicationFiled: May 28, 2009Publication date: June 23, 2011Applicant: ENI S.P.A.Inventors: Roberta Miglio, Renzo Bignazzi
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Publication number: 20110100819Abstract: The present invention relates to a process for the treatment of the aqueous stream coming from the Fischer-Tropsch reaction which comprises: —feeding of the aqueous stream containing organic by-products of the reaction to a distillation or stripping column; —collection from the column of a distillate enriched in alcohols having from 1 to 8 carbon atoms and other possible volatile compounds; feeding of the aqueous stream containing the acids leaving the bottom of the distillation column to an electrodialysis cell and the production of two outgoing streams: —an aqueous stream (i) enriched in organic acids having from 1 to 8 carbon atoms; —a purified aqueous stream (ii) with a low acid content.Type: ApplicationFiled: January 14, 2009Publication date: May 5, 2011Applicant: ENI S.p.A.Inventors: Roberta Miglio, Renzo Bignazzi, Lino Carnelli
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Publication number: 20110020913Abstract: The invention relates to a process for the production of algal biomass with a high lipid content, comprising: (a) the production of inocula in order to effect phase (b), in photoreactors; (b) the massive cultivation of the algal biomass in open ponds, inoculated with phase (a); (c) a thickening phase of the algal biomass, effected blandly; (d) an induction phase of the lipid production, wherein modules are used consisting of photoreactors or open ponds; (e) a separation phase of the biomass with a high lipid content.Type: ApplicationFiled: December 3, 2008Publication date: January 27, 2011Applicant: ENI S.P.A.Inventors: Giacomo Rispoli, Emiliano Fioravanti, Renzo Bignazzi, Ezio Nicola D'Addario, Francesca De Ferra, Federico Capuano
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Patent number: 7812204Abstract: The invention relates to a multi-step chemical transformation process for the production of 2,6-dimethylnaphthalene starting from one or more naphthalene hydrocarbons or hydrocarbon blends containing the same, one or more benzene hydrocarbons and, optionally, a methylating agent reacted in the presence of a catalyst containing a zeolite belonging to the MTW structural group, where hydrogen is fed in at least one of the steps.Type: GrantFiled: November 30, 2005Date of Patent: October 12, 2010Assignee: Polimeri Europa S.p.A.Inventors: Gianni Girotti, Franco Rivetti, Renzo Bignazzi
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Patent number: 7718836Abstract: The present invention relates to an integrated process for the production of high purity 2,6-dimethylnaphthalene starting from hydrocarbon mixtures containing naphthalene and/or isomers of methylnaphthalene and/or isomers of dimethylnaphthalene and/or isomers of polymethylnaphthalene, and from an alkylating agent, preferably methanol, reacted in the presence of a methylated benzene solvent or mixture of various methylated benzene solvents, preferably selected from toluene, xylene and trimethylbenzene, and a catalyst consisting of ZSM-12 zeolite and an inorganic ligand.Type: GrantFiled: June 6, 2002Date of Patent: May 18, 2010Assignees: ENI S.p.A., Polimeri Europa S.p.A.Inventors: Gianni Girotti, Giuseppe Terzoni, Oscar Cappellazzo, Renzo Bignazzi, Giannino Pazzuconi
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Publication number: 20070265480Abstract: The invention relates to a multi-step chemical transformation process for the production of 2,6-dimethylnaphthalene starting from one or more naphthalene hydrocarbons or hydrocarbon blends containing the same, one or more benzene hydrocarbons and, optionally, a methylating agent reacted in the presence of a catalyst containing a zeolite belonging to the MTW structural group, where hydrogen is fed in at least one of the steps.Type: ApplicationFiled: November 30, 2005Publication date: November 15, 2007Applicant: POLIMERI EUROPA S.p.A.Inventors: Gianni Girotti, Franco Rivetti, Renzo Bignazzi
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Patent number: 6924406Abstract: A process for separating mixtures of hydrocarbon isomers on molecular sieves, including providing columns which include molecular sieves and function alternatively as secondary adsorption, primary adsorption, and desorption devices, feeding the mixtures of hydrocarbon isomers to a column functioning as the primary adsorption device for adsorbing isomers with greater selectivity towards the molecular sieves, feeding effluent of the mixtures from the column functioning as the primary adsorption device to a column functioning as the secondary adsorption device for adsorbing remaining isomers with greater selectivity, discharging isomers with a lower selectivity from the column functioning as the secondary adsorption device and a desorbing agent therein, feeding a desorbing agent to the column functioning as the desorption device, discharging isomers with a greater selectivity towards the molecular sieves and the desorbing agent in the column functioning as the desorption device.Type: GrantFiled: June 25, 2001Date of Patent: August 2, 2005Assignee: Enichem S.p.A.Inventors: Gianluca Girardi, Gianni Pandolfi, Renzo Bignazzi, Renato Paludetto
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Patent number: 6737558Abstract: Process for the separation of 2,6-dimethylnaphthalene from mixtures containing it, comprising the following operations: crystallization by the addition of a solvent and cooling of the mixture to a temperature higher than the formation value of the first eutectic; removal of the mother liquor by repeated washings; dissolution of the solid obtained; crystallization by cooling; filtration.Type: GrantFiled: May 9, 2001Date of Patent: May 18, 2004Assignees: ENICHEM S.p.A., ENI S.p.A.Inventors: Renzo Bignazzi, Gianni Pandolfi
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Publication number: 20030171526Abstract: Process for the preparation of aromatic urethanes consisting in reacting organic carbonates with aromatic amines in reactors operating in continuous, feeding a total quantity of aromatic amines in a percentage, with respect to the weight of the total mixture, ranging from 4 to 30, and maintening a low concentration of amine in the reactor.Type: ApplicationFiled: March 24, 2003Publication date: September 11, 2003Inventors: Pietro Cesti, Aldo Bosetti, Ezio Battistel, Vittorio Carletti, Renzo Bignazzi
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Publication number: 20030069459Abstract: The present invention relates to an integrated process for the production of high purity 2,6-dimethylnaphthalene starting from hydrocarbon mixtures containing naphthalene and/or isomers of methylnaphthalene and/or isomers of dimethylnaphthalene and/or isomers of polymethylnaphthalene, and from an alkylating agent, preferably methanol, reacted in the presence of a methylated benzene solvent or mixture of various methylated benzene solvents, preferably selected from toluene, xylene and trimethylbenzene, and a catalyst consisting of ZSM-12 zeolite and an inorganic ligand.Type: ApplicationFiled: June 6, 2002Publication date: April 10, 2003Applicant: ENI S.p.A.Inventors: Gianni Girotti, Giuseppe Terzoni, Oscar Cappellazzo, Renzo Bignazzi, Giannino Pazzuconi
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Publication number: 20020062056Abstract: A process for separating hydrocarbon isomers in gas phase on molecular sieves, including feeding mixtures of hydrocarbon isomers to a primary adsorption column configured to adsorb isomers with a greater selectivity towards the molecular sieves, feeding effluent from the primary adsorption column to a secondary adsorption column configured to adsorb remaining isomers with a greater selectivity towards the molecular sieves and discharge a stream containing isomers with a lower selectivity towards the molecular sieves, feeding desorbing agent to a desorption column configured to discharge a stream containing isomers with a greater selectivity towards the molecular sieves and the desorbing agent, feeding the stream from the secondary adsorption column to a distillation unit configured to recover the desorbing agent for recycling to the desorption column, feeding the stream from the desorption column to another distillation unit configured to recover the desorbing agent for recycling to the desorption column.Type: ApplicationFiled: June 25, 2001Publication date: May 23, 2002Applicant: ENICHEM S.p.A.Inventors: Gianluca Girardi, Gianni Pandolfi, Renzo Bignazzi, Renato Paludetto
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Publication number: 20020023318Abstract: Process for the separation of 2,6-dimethylnaphthalene from mixtures containing it, comprising the following operations:Type: ApplicationFiled: May 9, 2001Publication date: February 28, 2002Applicant: ENICHEM S.p.A.Inventors: Renzo Bignazzi, Gianni Pandolfi