Patents by Inventor Shahin Goodarznia
Shahin Goodarznia 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: 11447434Abstract: A method of converting one or more alkanes to one or more alkenes that includes a) providing a first stream containing one or more alkanes and oxygen to an oxidative dehydrogenation reactor; b) converting at least a portion of the one or more alkanes to one or more alkenes in the oxidative dehydrogenation reactor to provide a second stream exiting the oxidative dehydrogenation reactor containing one or more alkanes, one or more alkenes, oxygen, carbon monoxide and optionally acetylene; and c) providing the second stream to a second reactor containing a catalyst that includes a group 11 metal to convert a least a portion of the carbon monoxide to carbon dioxide and reacting the acetylene.Type: GrantFiled: March 8, 2019Date of Patent: September 20, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia, Kamal Serhal, Xiaoliang Gao, Yoonhee Kim
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Publication number: 20220251004Abstract: A system and method for coproduction in the production of ethylene, including contacting ethane with an oxidative dehydrogenation (ODH) catalyst in presence of oxygen in a first reactor to dehydrogenate ethane to ethylene, and contacting a first-reactor effluent with an ODH catalyst in a second reactor to form ethanol and acetaldehyde.Type: ApplicationFiled: August 17, 2020Publication date: August 11, 2022Inventors: Vasily Simanzhenkov, Shahin Goodarznia
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Publication number: 20220241744Abstract: A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.Type: ApplicationFiled: July 15, 2020Publication date: August 4, 2022Inventors: Vasily SIMANZHENKOV, Shahin GOODARZNIA, Bolaji OLAYIWOLA, Kamal SERHAL, Michael KOSELEK
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Publication number: 20220144722Abstract: A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and a lower alkane are provided to an ODH reactor. At least a portion of the lower alkane is converted to an alkene and an ODH stream comprising the alkene, an oxygenate, water, and carbon monoxide is produced. The ODH stream is provided to a water gas shift/hydrogenation (WGS/H) reactor including a WGS/H catalyst. The ODH stream is reacted within the WGS/H reactor and hydrogen and carbon dioxide are generated from the carbon monoxide and water. At least a portion of the oxygenate and hydrogen are converted to an alcohol. Additionally, the alcohol may be dehydrated to form additional alkene and water.Type: ApplicationFiled: December 20, 2019Publication date: May 12, 2022Inventors: Shahin Goodarznia, Vasily Simanzhenkov, Bolaji Olayiwola, Yipei Styles
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Patent number: 11306044Abstract: Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.Type: GrantFiled: May 10, 2021Date of Patent: April 19, 2022Assignee: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Mohamed Aiffa
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Patent number: 11167267Abstract: Oxidative dehydrogenation catalysts including mixed oxides of Mo, V, Nb, Te, and optionally a promoter may be dissolved in aqueous solutions of oxalic acid. This permits the removal of catalyst and catalyst residues from reactors for the oxidative dehydrogenation of paraffins and particularly ethane.Type: GrantFiled: June 18, 2019Date of Patent: November 9, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Xiaoliang Gao, Vasily Simanzhenkov, Shahin Goodarznia, Marie Barnes, David Sullivan
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Publication number: 20210309592Abstract: Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.Type: ApplicationFiled: May 10, 2021Publication date: October 7, 2021Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Mohamed Aiffa
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Patent number: 11110423Abstract: Incorporating into a fixed bed reactor for an exothermal reaction having a catalyst supported on a support having a thermal conductivity typically less than 30 W/mk within the reaction temperature control limits heat dissipative particles having a thermal conductivity of at least 50 W/mk less than 30 W/mk within the reaction temperature control limits helps control the temperature of the reactor bed.Type: GrantFiled: April 27, 2020Date of Patent: September 7, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Kamal Elias Serhal, Shahin Goodarznia
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Patent number: 11111194Abstract: Oxidative dehydrogenation is an alternative to the energy extensive steam cracking process presently used for the production of olefins from paraffins. Various embodiments of an oxidative dehydrogenation chemical complex designed to allow removal of sulfur containing contaminants that collect in the gas mixer unit and in the feed lines leading to the ODH reactor are disclosed herein.Type: GrantFiled: January 17, 2019Date of Patent: September 7, 2021Assignee: NOVA CHEMICALS (INTERNATIONAL) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia, Christina Orta, Kamal Serhal, Eric Clavelle, Michael Koselek, Yoonhee Kim
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Patent number: 11053179Abstract: Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.Type: GrantFiled: October 16, 2019Date of Patent: July 6, 2021Assignee: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Mohamed Aiffa
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Publication number: 20210040018Abstract: A method that includes (a) providing a stream containing ethane and oxygen to an ODH reactor; (b) converting a portion of the ethane to ethylene and acetic acid in the ODH reactor to provide a stream containing ethane, ethylene, acetic acid, oxygen and carbon monoxide; (c) separating a portion of the acetic acid from the stream to provide an acetic acid stream and a stream containing ethane, ethylene, oxygen and carbon monoxide; (d) providing the stream to a CO Oxidation Reactor containing a catalyst that includes a group 11 metal to convert carbon monoxide to carbon dioxide and reacting acetylene to produce a stream containing ethane, ethylene and carbon dioxide; and (e) providing a portion of the stream and a portion of the acetic acid stream to a third reactor containing a catalyst that includes a metal selected from group 10 and group 11 metals to produce vinyl acetate.Type: ApplicationFiled: March 8, 2019Publication date: February 11, 2021Applicant: NOVA Chemicals (International) S.A.Inventors: David Gent, Shahin Goodarznia, Vasily Simanzhenkov, Kamal Serhal, Claire Ennis, Robert Ladd
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Patent number: 10899981Abstract: A method for preventing or removing water soluble fouling located downstream of an oxidative dehydrogenation (ODH) reactor is described. The method employs the introduction of water upstream of fouling locations, either continuously or intermittently, which acts to solubilize and carry away fouling material. The method has the advantage of being applicable for use while an ODH process is ongoing, circumventing the need for a costly shutdown.Type: GrantFiled: November 12, 2018Date of Patent: January 26, 2021Assignee: NOCA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia, Yoonhee Kim, Eric Clavelle
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Publication number: 20200407289Abstract: A method of converting one or more alkanes to one or more alkenes that includes a) providing a first stream containing one or more alkanes and oxygen to an oxidative dehydrogenation reactor; b) converting at least a portion of the one or more alkanes to one or more alkenes in the oxidative dehydrogenation reactor to provide a second stream exiting the oxidative dehydrogenation reactor containing one or more alkanes, one or more alkenes, oxygen, carbon monoxide and optionally acetylene; and c) providing the second stream to a second reactor containing a catalyst that includes a group 11 metal to convert a least a portion of the carbon monoxide to carbon dioxide and reacting the acetylene.Type: ApplicationFiled: March 8, 2019Publication date: December 31, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia, Kamal Serhal, Xiaoliang Gao, Yoonhee Kim
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Publication number: 20200254414Abstract: Incorporating into a fixed bed reactor for an exothermal reaction having a catalyst supported on a support having a thermal conductivity typically less than 30 W/mk within the reaction temperature control limits heat dissipative particles having a thermal conductivity of at least 50 W/mk less than 30 W/mk within the reaction temperature control limits helps control the temperature of the reactor bed.Type: ApplicationFiled: April 27, 2020Publication date: August 13, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Kamal Elias Serhal, Shahin Goodarznia
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Patent number: 10668441Abstract: Incorporating into a fixed bed reactor for an exothermal reaction having a catalyst supported on a support having a thermal conductivity typically less than 30 W/mk within the reaction temperature control limits heat dissipative particles having a thermal conductivity of at least 50 W/mk less than 30 W/mk within the reaction temperature control limits helps control the temperature of the reactor bed.Type: GrantFiled: September 8, 2016Date of Patent: June 2, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Kamal Elias Serhal, Shahin Goodarznia
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Publication number: 20200156055Abstract: Oxidative dehydrogenation of alkanes employs a catalyst, usually a mixed metal oxide, to convert, in the presence of oxygen, a lower alkane into its corresponding alkene. Continuous operation of an oxidative dehydrogenation process may result in a gradual decrease of catalyst activity and or selection, requiring downtime for regeneration. Provided herein is a process for regeneration of an oxidative dehydrogenation catalyst including initiating regeneration by passing a regeneration gas over the catalyst, monitoring regeneration by comparing the oxygen concentration of the regeneration gas before and after being passed over the catalyst, and ceasing regeneration when the oxygen concentration of the regeneration gas after passed over the catalyst is at least 90% of the concentration of the regeneration gas before being passed over the catalyst.Type: ApplicationFiled: November 21, 2019Publication date: May 21, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Shahin Goodarznia, Vasily Simanzhenkov, Kamal Serhal
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Publication number: 20200157023Abstract: A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and the lower alkane are provided to an ODH reactor to convert at least a portion of the lower alkane to an alkene. An ODH stream comprising the alkene, an oxygenate, steam, and a carbon-based oxide is produced. The bulk of the oxygenate is removed from the ODH outlet stream by non-dilutive cooling, with residual oxygenate being removed using dilutive quenching with a carbonate. Subsequently, separation of the carbon-based oxide from the alkene is achieved using a caustic tower, which also produces spent caustic in the form of a carbonate, which is then used as the carbonate for dilutive quenching. Dilutive quenching using a carbonate allows conversion of the oxygenate to an acetate, which can then be used to simplify separation of the oxygenate from water.Type: ApplicationFiled: October 9, 2019Publication date: May 21, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Kamal Serhal
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Patent number: 10647635Abstract: In some embodiments provided herein are processes for controlling carbon dioxide output levels coming from an oxidative dehydrogenation (ODH) process. Carbon dioxide output from an ODH process includes that produced in the ODH reaction and carry over when carbon dioxide is used as an inert diluent. Under certain circumstances carbon dioxide can also be consumed in the ODH process by acting as an oxidizing agent. By varying the amount of steam introduced into the ODH process an operator may alter the degree to which carbon dioxide acts as an oxidizing agent. This in turn allows a level of control in the degree to which carbon dioxide is consumed in the process, effecting overall carbon dioxide output. Minimizing the carbon dioxide output provides an opportunity to limit or eliminate the requirement for release of carbon dioxide into the atmosphere.Type: GrantFiled: October 19, 2018Date of Patent: May 12, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia
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Publication number: 20200123085Abstract: Provided in this disclosure is a process for the oxidative dehydrogenation of a lower alkane into a corresponding alkene. The process includes providing a gas stream comprising the lower alkane to a reactor; contacting, in the oxidative dehydrogenation reactor, the lower alkane with a catalyst that includes a mixed metal oxide; and providing to the last 50% of the oxidative dehydrogenation reactor a stream comprising from 0.01 vol. % to 10 vol. % of a C1-C3 alcohol.Type: ApplicationFiled: October 16, 2019Publication date: April 23, 2020Applicant: NOVA Chemicals (International) S.A.Inventors: Bolaji Olayiwola, Vasily Simanzhenkov, Shahin Goodarznia, Mohamed Aiffa
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Patent number: 10626066Abstract: Ethane may be catalytically oxidatively dehydrogenated to ethylene at high conversions and high selectivity in a circulating fluidized bed (CFB) reactor in the presence of oxygen in the feed in an amount above the flammability limit. The reactor has an attached regeneration reactor to regenerate the catalyst and cycle back to the CFB.Type: GrantFiled: October 8, 2015Date of Patent: April 21, 2020Assignee: NOVA Chemicals (International) S.A.Inventors: Vasily Simanzhenkov, Shahin Goodarznia, Xiaoliang Gao, Kamal Serhal, Leonid Kustov, Aleksey Kucherov, Elena Finashina