Patents by Inventor Ravichander Narayanaswamy

Ravichander Narayanaswamy 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: 9428695
    Abstract: A method of producing olefins and aromatic compounds from a feedstock is accomplished by introducing a hydrocarbon feedstock and a catalyst composition within a reactor. At least a portion of the reactor is at a reactor temperature of from 470° C. to 730° C. The catalyst composition is comprised of a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from greater than 0 wt. % of the total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. At least a portion of the feedstock is converted to products of at least one of olefins and aromatic compounds within the reactor, with at least some of the products being contained in a liquid product stream. At least a portion of the liquid product stream is directed to different downstream processes to increase production of at least one of olefins and aromatic compounds.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: August 30, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Publication number: 20160137933
    Abstract: The present invention relates to process for cracking a hydrocarbon feedstock in a steam cracker unit, comprising the following steps of: feeding a hydrocarbon feedstock to a first hydrocracking unit, feeding the hydrocarbon feedstock thus cracked to a separation unit for obtaining a stream high in paraffins and naphtenes, a stream high in heavy aromatics and a stream high in mono-aromatics feeding the stream high in paraffins and naphtenes to a second hydrocracking unit, wherein the process conditions in the first hydrocracking unit differ from the process conditions in the second hydrocracking unit, separating the stream thus hydrocracked in the second hydrocracking unit in a high content aromatics stream and gaseous stream comprising C2-C4 paraffins, hydrogen and methane, feeding the gaseous stream to a steam cracker unit.
    Type: Application
    Filed: June 30, 2014
    Publication date: May 19, 2016
    Inventors: Andrew Mark Ward, Arno Johannes Maria Oprins, Thomas Hubertus Maria Housmans, Ravichander Narayanaswamy, Vijayanand Rajagopalan
  • Patent number: 9212318
    Abstract: A catalyst composition useful for producing olefins and aromatic compounds from a feedstock is formed from a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from 10 wt. % or more by total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. The catalyst composition may be used in a method of producing olefins and aromatic compounds from a feedstock by introducing a hydrocarbon feedstock and the catalyst composition within a reactor, at least a portion of the reactor being at a reactor temperature of 550° C. or higher. The feedstock and catalyst composition are introduced into the reactor at a catalyst-to-feed (C/F) ratio of from 6 or greater.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: December 15, 2015
    Assignee: Saudi Basic Industries Corporation
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Patent number: 8895790
    Abstract: A catalyst composition useful for producing olefins and aromatic compounds from a feedstock is formed from a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from 10 wt. % or more by total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. The catalyst composition may be used in a method of producing olefins and aromatic compounds from a feedstock by introducing a hydrocarbon feedstock and the catalyst composition within a reactor, at least a portion of the reactor being at a reactor temperature of 550° C. or higher. The feedstock and catalyst composition are introduced into the reactor at a catalyst-to-feed (C/F) ratio of from 6 or greater.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: November 25, 2014
    Assignee: Saudi Basic Industries Corporation
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Publication number: 20140228605
    Abstract: A method of producing olefins and aromatic compounds from a feedstock includes introducing a hydrocarbon feedstock and a catalyst composition that is suitable for converting the feedstock to at least one of olefins and aromatic compounds within a reactor. The reactor has a reactor flow path having a length L between the inlet and outlet. The temperature in the reactor is monitored in at least one location that is at or adjacent to the inlet at a temperature-monitoring distance that is from 0.3 L or less from the inlet. In response to the monitored temperatures one or more parameters are modified. At least a portion of the feedstock is allowed to be converted to at least one of olefins and aromatic compounds within the reactor, which are removed as a product stream.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Publication number: 20140228606
    Abstract: A method of producing olefins and aromatic compounds from a feedstock is accomplished by introducing a hydrocarbon feedstock and a catalyst composition within a reactor. At least a portion of the reactor is at a reactor temperature of from 470° C. to 730° C. The catalyst composition is comprised of a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from greater than 0 wt. % of the total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. At least a portion of the feedstock is converted to products of at least one of olefins and aromatic compounds within the reactor, with at least some of the products being contained in a liquid product stream. At least a portion of the liquid product stream is directed to different downstream processes to increase production of at least one of olefins and aromatic compounds.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Publication number: 20140228205
    Abstract: A catalyst composition useful for producing olefins and aromatic compounds from a feedstock is formed from a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from 10 wt. % or more by total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. The catalyst composition may be used in a method of producing olefins and aromatic compounds from a feedstock by introducing a hydrocarbon feedstock and the catalyst composition within a reactor, at least a portion of the reactor being at a reactor temperature of 550° C. or higher. The feedstock and catalyst composition are introduced into the reactor at a catalyst-to-feed (C/F) ratio of from 6 or greater.
    Type: Application
    Filed: July 23, 2013
    Publication date: August 14, 2014
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan
  • Publication number: 20140228204
    Abstract: A catalyst composition useful for producing olefins and aromatic compounds from a feedstock is formed from a fluidized catalytic cracking (FCC) catalyst and a ZSM-5 zeolite catalyst, wherein the amount of ZSM-5 zeolite catalyst makes up from 10 wt. % or more by total weight of the FCC catalyst and the ZSM-5 zeolite catalyst. The catalyst composition may be used in a method of producing olefins and aromatic compounds from a feedstock by introducing a hydrocarbon feedstock and the catalyst composition within a reactor, at least a portion of the reactor being at a reactor temperature of 550° C. or higher. The feedstock and catalyst composition are introduced into the reactor at a catalyst-to-feed (C/F) ratio of from 6 or greater.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ravichander Narayanaswamy, Krishna Kumar Ramamurthy, P. S. Sreenivasan