Patents by Inventor Alberto Paggini
Alberto Paggini 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: 6897345Abstract: A process is described for the production of hydrocarbons with a high octane number starting from mixtures essentially consisting of n-butane and isobutane (such as for example field butanes) comprising a skeleton isomerization section, a dehydrogenation section of paraffins, a selective hydrogenation section of butadiene, two conversion sections of olefins, in which the isobutene is firstly selectively transformed by means of dimerization and/or etherification, followed by the linear butenes by means of alkylation, in order to obtain, by joining the products of the two conversion sections, a product having excellent motoristic properties (octane number, volatility and distillation curve).Type: GrantFiled: April 23, 2003Date of Patent: May 24, 2005Assignee: Snamprogetti S.p.A.Inventors: Mario Marchionna, Marco Di Girolamo, Domenico Sanfilippo, Alberto Paggini
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Patent number: 6875411Abstract: Process for the production of hydrogen consisting in subjecting a solid to oxidation and treating, in a different zone, the oxidized form thus produced with a reducing stream, preferably a hydrocarbon.Type: GrantFiled: March 19, 2001Date of Patent: April 5, 2005Assignee: Snamprogetti, S.p.A.Inventors: Domenico Sanfilippo, Alberto Paggini, Valerio Piccoli, Roberta Miglio, Stefano Rossini
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Patent number: 6833013Abstract: Process for the production of synthesis gas, by means of catalytic partial oxidation or autothermal reforming of light hydrocarbons, which comprises partially oxidizing the hydrocarbon with oxygen coming from the reduction of at least one metal oxide selected from hexavalent chromium oxide, supported on an inert carrier and modified with an alkaline and/or earth-alkaline metal, and metal oxides capable of autonomously sustaining the catalytic partial oxidation reaction by means of redox cycles.Type: GrantFiled: April 25, 2000Date of Patent: December 21, 2004Assignee: Snamprogetti S.p.A.Inventors: Domenico Sanfilippo, Alberto Paggini, Ivano Miracca, Carlo Rescalli
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Publication number: 20040010171Abstract: A process is described for the production of hydrocarbons with a high octane number starting from mixtures essentially consisting of n-butane and isobutane (such as for example field butanes) comprising a skeleton isomerization section, a dehydrogenation section of paraffins, a selective hydrogenation section of butadiene, two conversion sections of olefins, in which the isobutene is firstly selectively transformed by means of dimerization and/or etherification, followed by the linear butenes by means of alkylation, in order to obtain, by joining the products of the two conversion sections, a product having excellent motoristic properties (octane number, volatility and distillation curve).Type: ApplicationFiled: April 23, 2003Publication date: January 15, 2004Applicant: SNAMPROGETTI S.p.A.Inventors: Mario Marchionna, Marco Di Girolamo, Domenico Sanfilippo, Alberto Paggini
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Publication number: 20020087040Abstract: A process is described for the production of hydrocarbons with a high octane number starting from mixtures essentially consisting of n-butane and isobutane (such as for example field butanes) comprising a skeleton isomerization section, a dehydrogenation section of paraffins, a selective hydrogenation section of butadiene, two conversion sections of olefins, in which the isobutene is firstly selectively transformed by means of dimerization and/or etherification, followed by the linear butenes by means of alkylation, in order to obtain, by joining the products of the two conversion sections, a product having excellent motoristic properties (octane number, volatility and distillation curve).Type: ApplicationFiled: November 9, 2001Publication date: July 4, 2002Applicant: SNAMPROGETTI S.p.A.Inventors: Mario Marchionna, Marco Di Girolamo, Domenico Sanfilippo, Alberto Paggini
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Publication number: 20020016520Abstract: Integrated process for the preparation of cumene which comprises dehydrogenating a stream of propane to propylene in a dehydrogenation unit and sending the stream leaving the dehydrogenation unit, containing 25-40% by weight of propylene, to an alkylation unit together with a stream of benzene with a molar ratio benzene/propylene ranging from 8 to 10. The alkylation product is distilled in a first distillation column to recover a light fraction, essentially consisting of propane which is recycled to the dehydrogenation, and a heavy fraction which is distilled in a second distillation column to recover non-reacted benzene at the head, recycled to the alkylation unit, and cumene with a purity of over 99%, at the tail.Type: ApplicationFiled: June 13, 2001Publication date: February 7, 2002Applicant: SNAMPROGETTI S.p.A.Inventors: Alberto Paggini, Domenico Sanfilippo, Elena Picciotto
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Publication number: 20010055559Abstract: Process for the production of hydrogen consisting in subjecting a solid to oxidation and treating, in a different zone, the oxidized form thus produced with a reducing stream, preferably a hydrocarbon.Type: ApplicationFiled: March 19, 2001Publication date: December 27, 2001Applicant: Snamprogetti S.p.A.Inventors: Domenico Sanfilippo, Alberto Paggini, Valerio Piccoli, Roberta Miglio, Stefano Rossini
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Patent number: 6241791Abstract: Liquid mixture suitable as gasoline characterized in hat it has a RON octane number equal to or higher than 90 and a MON octane number equal to or higher than 80 and that it essentially consists of: a typical gasoline cut, having a boiling point ranging from 30 to 220° C. consisting of hydrocarbon compounds; one or more compounds deriving from the selective oligomerization of isobutene, which may optionally have been at least partially hydrogenated, in a quantity ranging from 0.5 to 20% by weight, wherein the dimers of isobutene and possible co-dimers of isobutene with n-butenes are in a quantity of at least 80% by weight; optionally ethanol in a quantity ranging from 0 to 10% by weight, the complement to 100 being said gasoline cut.Type: GrantFiled: March 21, 2000Date of Patent: June 5, 2001Assignees: Snamprogetti S.p.A., Ecofuel S.p.A.Inventors: Roberto Trotta, Mario Marchionna, Alberto Paggini
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Patent number: 4778827Abstract: A catalytic system and process for producing mixtures of methanol and higher alcohols from synthesis gas, the catalytic system comprising zinc, chromium, copper, one or more alkaline metals, and possibly one or more metals chosen from molybdenum, manganese, lanthanium, cerium, aluminium, titanium and vanadium, either all or only part of said elements being chemically bonded to oxygen and/or together.Type: GrantFiled: October 16, 1986Date of Patent: October 18, 1988Assignee: Snamprogetti, S.p.A.Inventors: Vittorio Fattore, Bruno Notari, Alberto Paggini, Vincenzo Lagana'
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Patent number: 4513100Abstract: A catalytic system and process for producing mixtures of methanol and higher alcohols from synthesis gas, the catalytic system comprising zinc, chromium, copper, one or more alkaline metals, and possibly one or more metals chosen from molybdenum, manganese, lanthanum, cerium, aluminum, titanium and vanadium, either all or only part of said elements being chemically bonded to oxygen and/or together.Type: GrantFiled: October 28, 1982Date of Patent: April 23, 1985Assignee: Snamprogetti S.p.A.Inventors: Vittorio Fattore, Bruno Notari, Alberto Paggini, Vincenzo Lagana
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Patent number: 4481012Abstract: A process for the production of a mixture of methanol and higher alcohols of "fuel grade" from CO and H.sub.2.To reduce the water content in the mixture coming from the synthesis reactor of the synthesis of the alcohols, the reaction product is cooled down and is fed to a secondary reactor wherein the conversion reactionCO+H.sub.2 O.revreaction.CO.sub.2 +H.sub.2is carried on in conditions near to equilibrium.The further product of reaction is cooled in a more thorough manner so as to obtain a liquid phase constituted by the "fuel grade" mixture of alcohols and a gaseous phase which after the discharge of the inert substances and after elimination of the CO.sub.2 is recycled to the synthesis reactor.In the secondary conversion reactor operation is carried out with a temperature comprised between 150.degree. C. and 250.degree. C., at a pressure equal to that of the synthesis reactor and in the presence of a copper catalyst.Type: GrantFiled: July 18, 1983Date of Patent: November 6, 1984Assignee: Snamprogetti S.p.A.Inventors: Raffaele di Pietro, Alberto Paggini, Vincenzo Lagana'
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Patent number: 4460378Abstract: A process for the production of a "fuel grade" mixture of methanol and higher alcohols from CO and H.sub.2.To reduce the amount of water contained in the mixture coming from the synthesis reactor of the alcohol synthesis the reaction product is cooled and fed to a secondary reactor wherein the reaction of conversion:CO+H.sub.2 O.revreaction.CO.sub.2 +H.sub.2is conducted in conditions near to equilibrium.The further reaction product is cooled down further so as to obtain a liquid phase constituted by the alcohols, and in which there are still dissolved some gases, and a gaseous phase containing the carbon dioxide produced in the secondary reactor together with the non-reacted gases. The gaseous phase is sent to a section of absorption of the CO.sub.2 wherein the absorbing liquid is constituted by the very alcoholic mixture produced; after removal of the CO.sub.2 the gas is partly recycled and partly let off in order to avoid the accumulation of inert gases contained in the feeding mixture.Type: GrantFiled: July 18, 1983Date of Patent: July 17, 1984Assignee: Snamprogetti S.p.A.Inventors: Raffaele Di Pietro, Alberto Paggini, Vincenzo Lagana'
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Patent number: 4358625Abstract: A method is disclosed for obtaining high-purity ethylene glycols in which the improvement consists in reducing the oxygen-containing organic impurities by treating their aqueous solutions as obtained during the processing of ethylene oxide with a solution of an alkali metal borohydride, sodium borohydride being preferred.A definitely alkaline environment is preferred. Ethylene glycols can thus be obtained which are particularly suitable for use in the fibre-manufacturing industry. Such glycols have extremely low UV-absorbance values.Type: GrantFiled: March 9, 1979Date of Patent: November 9, 1982Assignee: Snamprogetti, S.p.A.Inventors: Alberto Paggini, Ugo Romano, Donato Furlone, Domenico Sanfilippo