Patents by Inventor Kerman Nariman Dukandar

Kerman Nariman Dukandar 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).

  • Process for production of propylene and ethylbenzene from dilute ethylene streams
    Patent number: 7608745
    Abstract: A process for producing propylene is provided which includes directing an ethylene stream from an ethylene reaction zone to a propylene reaction zone; directing a butene stream to the propylene reaction zone; reacting the ethylene stream with the butene stream in the propylene reaction zone to produce a propylene reaction stream; and subjecting the propylene reaction stream to a recovery operation to recover propylene. A processes is also provided for producing an alkylaromatic by directing an ethylene stream from a propylene reaction zone to an alkylaromatic reaction zone; directing an aromatic stream to the alkylaromatic reaction zone; reacting the ethylene stream with the aromatic stream in the alkylaromatic reaction zone to produce an alkylaromatic reaction stream; and subjecting the alkylaromatic reaction stream to a recovery operation to recover alkylaromatics. A process for producing propylene and an alkylaromatic is also provided.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 27, 2009
    Assignee: Lummus Technology Inc.
    Inventors: James M. Hildreth, Kerman Nariman Dukandar, Ronald M. Venner
  • Process for production of ethylbenzene from dilute ethylene streams
    Patent number: 7393988
    Abstract: An improvement in a process for the production of ethylbenzene from a dilute ethylene stream wherein an ethylene-containing stream derived from a cracking process is directed to an ethylene fractionator for separation of ethylene and ethane. The improvement includes providing the dilute ethylene stream by liquefying and separating out a portion of the ethylene-containing stream prior to directing the remainder of the ethylene-containing stream to the ethylene fractionator and/or by drawing off a side stream from the ethylene fractionator; and, directing the dilute ethylene stream as a feed to an alkylator for alkylation with benzene to produce ethylbenzene.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: July 1, 2008
    Assignee: Lummus Technology Inc.
    Inventors: James M. Hildreth, Kerman Nariman Dukandar, Ronald M. Venner
  • Process for production of propylene and ethylbenzene from dilute ethylene streams
    Publication number: 20080119676
    Abstract: A process for producing propylene is provided which includes directing an ethylene stream from an ethylene reaction zone to a propylene reaction zone; directing a butene stream to the propylene reaction zone; reacting the ethylene stream with the butene stream in the propylene reaction zone to produce a propylene reaction stream; and subjecting the propylene reaction stream to a recovery operation to recover propylene. A processes is also provided for producing an alkylaromatic by directing an ethylene stream from a propylene reaction zone to an alkylaromatic reaction zone; directing an aromatic stream to the alkylaromatic reaction zone; reacting the ethylene stream with the aromatic stream in the alkylaromatic reaction zone to produce an alkylaromatic reaction stream; and subjecting the alkylaromatic reaction stream to a recovery operation to recover alkylaromatics. A process for producing propylene and an alkylaromatic is also provided.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 22, 2008
    Inventors: James M. Hildreth, Kerman Nariman Dukandar, Ronald M. Venner
  • Process for production of ethylbenzene from dilute ethylene streams
    Patent number: 7259282
    Abstract: An improvement in a process for the production of ethylbenzene from a dilute ethylene stream wherein an ethylene-containing stream derived from a cracking process is directed to an ethylene fractionator for separation of ethylene and ethane. The improvement includes providing the dilute ethylene stream by liquefying and separating out a portion of the ethylene-containing stream prior to directing the remainder of the ethylene-containing stream to the ethylene fractionator and/or by drawing off a side stream from the ethylene fractionator; and, directing the dilute ethylene stream as a feed to an alkylator for alkylation with benzene to produce ethylbenzene.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: August 21, 2007
    Assignee: ABB Lummus Global Inc.
    Inventors: James M. Hildreth, Kerman Nariman Dukandar, Ronald M. Venner
  • Process for production of propylene and ethylbenzene from dilute ethylene streams
    Publication number: 20040254414
    Abstract: A process for producing propylene is provided which includes directing an ethylene stream from an ethylene reaction zone to a propylene reaction zone; directing a butene stream to the propylene reaction zone; reacting the ethylene stream with the butene stream in the propylene reaction zone to produce a propylene reaction stream; and subjecting the propylene reaction stream to a recovery operation to recover propylene. A processes is also provided for producing an alkylaromatic by directing an ethylene stream from a propylene reaction zone to an alkylaromatic reaction zone; directing an aromatic stream to the alkylaromatic reaction zone; reacting the ethylene stream with the aromatic stream in the alkylaromatic reaction zone to produce an alkylaromatic reaction stream; and subjecting the alkylaromatic reaction stream to a recovery operation to recover alkylaromatics. A process for producing propylene and an alkylaromatic is also provided.
    Type: Application
    Filed: June 11, 2003
    Publication date: December 16, 2004
    Inventors: James M. Hildreth, Kerman Nariman Dukandar, Ronald M. Venner