Patents by Inventor Sivadinarayana Chinta

Sivadinarayana Chinta 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).

  • Patent number: 11932537
    Abstract: A process for producing syngas and olefins includes the steps of feeding a catalytic partial oxidation (CPO) reactant mixture having oxygen, first hydrocarbons, and optionally steam to a CPO reaction zone having a CPO catalyst such that at least a portion of the CPO reactant mixture reacts, via an exothermic CPO reaction, to produce syngas having hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), water, and unreacted first hydrocarbons. The syngas is characterized by a molar ratio M defined as (H2?CO2)/(CO+CO2). The method further includes feeding a cracking zone feed having second hydrocarbons to a cracking zone such that at least a portion of the second hydrocarbons undergoes an endothermic cracking reaction to produce a cracking zone product stream having olefins, hydrogen, and unreacted second hydrocarbons; and cooling the CPO reaction zone by heating the cracking zone while cooling the CPO reaction zone via heat transfer between the CPO reaction zone and the cracking zone.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 19, 2024
    Assignee: ENI S.P.A.
    Inventors: Sivadinarayana Chinta, Miasser Al-Ghamdi, Atul Pant, Ravichander Narayanaswamy
  • Publication number: 20220144632
    Abstract: A process for producing syngas and olefins includes the steps of feeding a catalytic partial oxidation (CPO) reactant mixture having oxygen, first hydrocarbons, and optionally steam to a CPO reaction zone having a CPO catalyst such that at least a portion of the CPO reactant mixture reacts, via an exothermic CPO reaction, to produce syngas having hydrogen (H2), carbon monoxide (CO), carbon dioxide (CO2), water, and unreacted first hydrocarbons. The syngas is characterized by a molar ratio M defined as (H2?CO2)/(CO+CO2). The method further includes feeding a cracking zone feed having second hydrocarbons to a cracking zone such that at least a portion of the second hydrocarbons undergoes an endothermic cracking reaction to produce a cracking zone product stream having olefins, hydrogen, and unreacted second hydrocarbons; and cooling the CPO reaction zone by heating the cracking zone while cooling the CPO reaction zone via heat transfer between the CPO reaction zone and the cracking zone.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 12, 2022
    Inventors: Sivadinarayana CHINTA, Miasser AL-GHAMDI, Atul PANT, Ravichander NARAYANASWAMY
  • Publication number: 20220135506
    Abstract: A process for producing methanol including the following steps: (a) reacting, via a catalytic partial oxidation (CPO) reaction, a CPO reactant mixture (hydrocarbons, oxygen, and optionally steam) in a CPO reactor to produce syngas; wherein the CPO reactor has a CPO catalyst; and wherein the syngas includes hydrogen, carbon monoxide, carbon dioxide, water, and unreacted hydrocarbons; (b) introducing the syngas to a methanol reactor to produce a methanol reactor effluent stream; wherein the methanol reactor effluent stream includes methanol, water, hydrogen, carbon monoxide, carbon dioxide, and hydrocarbons; and (c) separating the methanol reactor effluent stream into a crude methanol stream and a vapor stream. The crude methanol stream comprises includes methanol and water. The vapor stream includes hydrogen, carbon monoxide, carbon dioxide, and hydrocarbons; and wherein the crude methanol stream has water in an amount of less than about 10 wt. %, based on the total weight of the crude methanol stream.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 5, 2022
    Inventors: Sivadinarayana CHINTA, Miasser AL-GHAMDI, Atul PANT, Ravichander NARAYANASWAMY, Saud AL-HAGBANI, Arwa RABIE
  • Publication number: 20220081380
    Abstract: A process for producing syngas and olefins including the steps of feeding a catalytic partial oxidation (CPO) reactant mixture (oxygen, first hydrocarbons, steam) to a CPO reactor (CPO catalyst); wherein the CPO reactant mixture reacts, via CPO reaction, in CPO reactor to produce a CPO reactor effluent (H2, CO, CO2, water, unreacted first hydrocarbons).
    Type: Application
    Filed: December 31, 2019
    Publication date: March 17, 2022
    Inventors: Sivadinarayana CHINTA, Ravichander NARAYANASWAMY, Atul PANT
  • Publication number: 20210387934
    Abstract: A process for producing methanol includes the following steps (a) reacting, via a catalytic partial oxidation (CPO) reaction, a CPO reactant mixture (hydrocarbon, oxygen, and optionally steam) in a CPO reactor to produce syngas including H2, CO, CO2, H2O, and unreacted hydrocarbons; and wherein the CPO reactor includes a CPO catalyst; (b) introducing the syngas to a methanol reactor to produce a methanol reactor effluent stream (methanol, water, hydrogen, carbon monoxide, carbon dioxide, and hydrocarbons); and (c) separating the methanol reactor effluent stream into a crude methanol stream, a hydrogen stream, a CO2 stream, and a purge gas stream. The crude methanol stream comprises includes methanol and water; wherein the purge gas stream includes carbon monoxide and hydrocarbons; and the CO2 stream includes at least a portion of the CO2 of the methanol reactor effluent stream; and (d) recycling at least a portion of the CO2 stream to the CPO reactor.
    Type: Application
    Filed: January 2, 2020
    Publication date: December 16, 2021
    Inventors: Sivadinarayana CHINTA, Ravichander NARAYANASWAMY, Atul PANT
  • Publication number: 20200094240
    Abstract: A bulk three-dimensional (3-D) catalyst and methods of making and use are described herein. The bulk three-dimensional (3-D) catalyst is formed from a catalytically active metal or metal alloy and has a sulfurized or oxidized outer surface.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 26, 2020
    Inventors: Gregory BIAUSQUE, Lawrence D'SOUZA, Sivadinarayana CHINTA
  • Patent number: 10369552
    Abstract: An alkylation catalyst having a zeolite catalyst component and a binder component providing mechanical support for the zeolite catalyst component is disclosed. The binder component is an ion-modified binder that can include metal ions selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, K, Cs, Ga, B, P, Rb, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof. The metal ions reduce the number of acid sites on the zeolite catalyst component. The metal ions can range from 0.1 to 50 wt % based on the total weight of the ion-modified binder. Optionally, the ion-modified binder is present in amounts ranging from 1 to 80 wt % based on the total weight of the catalyst.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: August 6, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Joseph E Pelati
  • Publication number: 20190232260
    Abstract: A catalyst containing nanosize zeolite particles supported on a support material for alkylation reactions, such as the alkylation of benzene to form ethylbenzene, and processes using such a catalyst is disclosed.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Sivadinarayana Chinta, Joseph Pelati
  • Patent number: 10300459
    Abstract: A process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system having a Group 4 or Group 5 metal oxide and a support. The process includes obtaining a product stream containing butadiene from the dehydration reactor. Another process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system containing a tungsten oxide supported on a zeolite or a tantalum oxide supported on a zeolite. The process includes obtaining a product stream containing butadiene from the dehydration reactor.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 28, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Kaushik Gandhi
  • Patent number: 10293331
    Abstract: A catalyst containing nanosize zeolite particles supported on a support material for alkylation reactions, such as the alkylation of benzene to form ethylbenzene, and processes using such a catalyst is disclosed.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: May 21, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Joseph Pelati
  • Publication number: 20190105634
    Abstract: A process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system having a Group 4 or Group 5 metal oxide and a support. The process includes obtaining a product stream containing butadiene from the dehydration reactor. Another process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system containing a tungsten oxide supported on a zeolite or a tantalum oxide supported on a zeolite. The process includes obtaining a product stream containing butadiene from the dehydration reactor.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 11, 2019
    Inventors: Sivadinarayana Chinta, Kaushik Gandhi
  • Patent number: 10179323
    Abstract: A process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system having a Group 4 or Group 5 metal oxide and a support. The process includes obtaining a product stream containing butadiene from the dehydration reactor. Another process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system containing a tungsten oxide supported on a zeolite or a tantalum oxide supported on a zeolite. The process includes obtaining a product stream containing butadiene from the dehydration reactor.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: January 15, 2019
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Kaushik Gandhi
  • Publication number: 20190010058
    Abstract: Thermoneutral systems and methods for producing carbon monoxide (CO) and sulfur dioxide (SO2) are disclosed. The systems can include a first reaction zone and a second reaction zone, where heat generated in the first reaction zone is sufficient to drive a carbon dioxide gas (CO2(g)) and elemental sulfur gas (S(g)) reaction to produce a product stream that includes CO(g) and SO2(g).
    Type: Application
    Filed: December 6, 2016
    Publication date: January 10, 2019
    Inventors: Lawrence D'SOUZA, Sivadinarayana CHINTA
  • Publication number: 20180297017
    Abstract: An alkylation catalyst having a zeolite catalyst component and a binder component providing mechanical support for the zeolite catalyst component is disclosed. The binder component is an ion-modified binder that can include metal ions selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, K, Cs, Ga, B, P, Rb, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof. The metal ions reduce the number of acid sites on the zeolite catalyst component. The metal ions can range from 0.1 to 50 wt % based on the total weight of the ion-modified binder. Optionally, the ion-modified binder is present in amounts ranging from 1 to 80 wt % based on the total weight of the catalyst.
    Type: Application
    Filed: June 18, 2018
    Publication date: October 18, 2018
    Inventors: Sivadinarayana Chinta, Joseph E Pelati
  • Patent number: 10022710
    Abstract: An alkylation catalyst having a zeolite catalyst component and a binder component providing mechanical support for the zeolite catalyst component is disclosed. The binder component is an ion-modified binder that can include metal ions selected from the group consisting of Co, Mn, Ti, Zr, V, Nb, K, Cs, Ga, B, P, Rb, Ag, Na, Cu, Mg, Fe, Mo, Ce, and combinations thereof. The metal ions reduce the number of acid sites on the zeolite catalyst component. The metal ions can range from 0.1 to 50 wt % based on the total weight of the ion-modified binder. Optionally, the ion-modified binder is present in amounts ranging from 1 to 80 wt % based on the total weight of the catalyst.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 17, 2018
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Joseph E. Pelati
  • Publication number: 20170349503
    Abstract: A process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system having a Group 4 or Group 5 metal oxide and a support. The process includes obtaining a product stream containing butadiene from the dehydration reactor. Another process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system containing a tungsten oxide supported on a zeolite or a tantalum oxide supported on a zeolite. The process includes obtaining a product stream containing butadiene from the dehydration reactor.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 7, 2017
    Inventors: Sivadinarayana CHINTA, Kaushik GANDHI
  • Patent number: 9764996
    Abstract: A method of making a catalyst containing nanosize zeolite particles supported on a support material is disclosed. A process for making styrene or ethylbenzene by reacting toluene with a C1 source over a catalyst containing nanosize zeolite particles supported on a support material is disclosed.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: September 19, 2017
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Sivadinarayana Chinta, Joseph L. Thorman
  • Patent number: 9527785
    Abstract: A process is disclosed that includes reacting a C1 source with n-butene to form a C-5 diolefin.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: December 27, 2016
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Kenneth Paul Blackmon, Sivadinarayana Chinta, Jun Wang
  • Patent number: 9371257
    Abstract: A method for the oxidative coupling of hydrocarbons includes providing an oxidative catalyst inside a reactor and carrying out the oxidative coupling reaction under a set of reaction conditions. The reactor surfaces that contact the reactants and products do not provide a significant detrimental catalyzing effect. In an embodiment the reactor contains an inert lining or a portion of the reactor inner surface is treated to reduce the detrimental catalytic effects. In an embodiment the reactor contains a lining that includes an oxidative catalyst.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: June 21, 2016
    Assignee: Fina Technology, Inc.
    Inventors: Sivadinarayana Chinta, Joseph L. Thorman
  • Publication number: 20160158737
    Abstract: A catalyst containing nanosize zeolite particles supported on a support material for alkylation reactions, such as the alkylation of benzene to form ethylbenzene, and processes using such a catalyst is disclosed.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Inventors: Sivadinarayana Chinta, Joseph Pelati