Patents by Inventor Sanjay P. Godbole
Sanjay P. Godbole 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: 7250527Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and alkylene diamines to the overhead decanter and/or to the solvent water.Type: GrantFiled: December 15, 2003Date of Patent: July 31, 2007Assignee: Ineos USA LLCInventors: Sanjay P. Godbole, Mark C. Cesa
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Patent number: 7211674Abstract: A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the mixture to release oxazole.Type: GrantFiled: December 17, 2003Date of Patent: May 1, 2007Assignee: Ineos USA LLCInventors: Mark C. Cesa, Eric J. Moore, Mark R. Bruce, Sanjay P. Godbole, Michael K. Hagans, David R. Bender
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Patent number: 7071348Abstract: A process for the recovery and purification of olefinically unsaturated nitrites from a process stream produced by the ammoxidation of a hydrocarbon feedstock comprising contacting the process stream comprising olefinically unsaturated nitrile with an aqueous quench liquid in a quench apparatus to produce a gaseous quench effluent comprising olefinically unsaturated nitrile; contacting the gaseous quench effluent with a liquid comprising water in an absorber apparatus to form an aqueous mixture comprising absorbed olefinically unsaturated nitrile; withdrawing from the absorber apparatus a side-draw stream comprising water and a bottoms stream comprising olefinically unsaturated nitrile; introducing the bottoms stream to a first distillation column where the bottoms stream is distilled in an extractive distillation to form a top fraction comprising olefinically unsaturated nitrile, and directing the side-draw stream comprising water to the upper portion of the first distillation column to assist with the extraType: GrantFiled: January 6, 2005Date of Patent: July 4, 2006Assignee: The Standard Oil CompanyInventors: Sanjay P. Godbole, Milind V. Kantak, Oliver M. Wahnschafft
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Patent number: 6982342Abstract: A process for increasing the yield of acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a carboxylic acid, ammonia and air into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, carboxylic acid, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.Type: GrantFiled: May 15, 2003Date of Patent: January 3, 2006Assignee: Standard Oil CompanyInventors: Michael J. Seely, Sanjay P. Godbole, Christos Paparizos
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Publication number: 20040230059Abstract: A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the mixture to release oxazole.Type: ApplicationFiled: December 17, 2003Publication date: November 18, 2004Inventors: Mark C. Cesa, Eric J. Moore, Mark R. Bruce, Sanjay P. Godbole, Michael K. Hagans, David R. Bender
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Patent number: 6793776Abstract: A process for the enhanced recovery and operation of hydrogen cyanide (HCN)/heads column obtained from the reactor effluent of an ammoxidation reaction of propane, propylene or isobutylene by reducing the polymer formation above the feed tray in the heads tower.Type: GrantFiled: August 31, 2001Date of Patent: September 21, 2004Assignee: The Standard Oil CompanyInventor: Sanjay P. Godbole
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Publication number: 20040181086Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and alkylene diamines to the overhead decanter and/or to the solvent water.Type: ApplicationFiled: December 15, 2003Publication date: September 16, 2004Inventors: Sanjay P. Godbole, Mark C. Cesa
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Patent number: 6780289Abstract: A method for the purification of crude acetonitrile comprising distilling the crude acetonitrile in a first fractional distillation column at below atmospheric pressure, withdrawing a first side draw fraction comprising acetonitrile, distilling the first side draw fraction in a second fractional distillation column at super atmospheric pressure, and withdrawing from the second distillation a second side draw fraction comprising purified acetonitrile.Type: GrantFiled: July 16, 2001Date of Patent: August 24, 2004Assignee: The Standard Oil CompanyInventor: Sanjay P. Godbole
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Publication number: 20030219372Abstract: A process for increasing the yield of acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a carboxylic acid, ammonia and air into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, carboxylic acid, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.Type: ApplicationFiled: May 15, 2003Publication date: November 27, 2003Inventors: Michael J. Seely, Sanjay P. Godbole, Christos Paparizos
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Publication number: 20020043455Abstract: A method for the purification of crude acetonitrile comprising distilling the crude acetonitrile in a first fractional distillation column at below atmospheric pressure, withdrawing a first side draw fraction comprising acetonitrile, distilling the first side draw fraction in a second fractional distillation column at super atmospheric pressure, and withdrawing from the second distillation a second side draw fraction comprising purified acetonitrile.Type: ApplicationFiled: July 16, 2001Publication date: April 18, 2002Inventor: Sanjay P. Godbole
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Publication number: 20020029952Abstract: A process for the enhanced recovery and operation of hydrogen cyanide (HCN)/heads column obtained from the reactor effluent of an ammoxidation reaction of propane, propylene or isobutylene by reducing the polymer formation above the feed tray in the heads tower.Type: ApplicationFiled: August 31, 2001Publication date: March 14, 2002Inventor: Sanjay P. Godbole
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Patent number: 6296739Abstract: A process for the enhanced recovery and operation of hydrogen cyanide (HCN) / heads column obtained from the reactor effluent of an ammoxidation reaction of propane, propylene or isobutylene by reducing the polymer formation above the feed tray in the heads tower.Type: GrantFiled: January 8, 1999Date of Patent: October 2, 2001Assignee: The Standard Oil CompanyInventor: Sanjay P. Godbole
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Patent number: 6204407Abstract: A process for increasing the yield of one or both co-products HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a mixture comprising one or more alcohols selected from crude methanol, crude ethanol or crude propanol, ammonia and air into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, alcohol, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.Type: GrantFiled: March 2, 2000Date of Patent: March 20, 2001Assignee: The Standard Oil CompanyInventors: Sanjay P. Godbole, Michael J. Seely, Dev D. Suresh
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Patent number: 5959134Abstract: A process for the enhanced recovery of waste organics, mainly hydrogen cyanide (HCN) and acrylonitrile, from the process flare material obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene.Type: GrantFiled: May 20, 1998Date of Patent: September 28, 1999Assignee: The Standard Oil CompanyInventors: Kenneth P. Keckler, Sanjay P. Godbole
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Patent number: 5869730Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and puriType: GrantFiled: May 13, 1998Date of Patent: February 9, 1999Assignee: The Standard Oil CompanyInventors: Anne M. Graham, Sanjay P. Godbole, Daniel G. Lee
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Patent number: 5840955Abstract: A process for the enhanced recovery of hydrogen cyanide (HCN) obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene comprising passing the reactor effluent through a quench column, an absorber column, a first distillation column, a second distillation column, a cooler and a knock-out pot, wherein the improvement comprises contacting the vapor phase containing hydrogen cyanide with an aqueous stream.Type: GrantFiled: November 25, 1997Date of Patent: November 24, 1998Inventors: Edward J. Sockell, Joseph C. Sarna, Ali Kerr, Sanjay P. Godbole
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Patent number: 5629444Abstract: A process for the recovery of acrylonitrile or methacrylonitrile obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene comprising passing the reactor effluent through an absorber column, a first decanter, recovery column, a second decanter and stripper column wherein the improvement comprises maintaining inside temperature of the first and second decanter at between about 32.degree. F. to 75.degree. F.Type: GrantFiled: June 6, 1996Date of Patent: May 13, 1997Assignee: The Standard Oil CompanyInventors: James S. Gibson, Jeffrey E. Rinker, Paul T. Wachtendorf, Sanjay P. Godbole