Patents by Inventor Melcon G. Melconian

Melcon G. Melconian 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).

  • Method for controlling hydrocracking and isomerization dewaxing operations
    Patent number: 6416654
    Abstract: Nitrogenous compounds especially bases such as ammonia vapor are used to control the operation of a hydrocracker or catalytic dewaxer. Catalyst activity and selectivity may be controlled by addition of the base to the feed, for example, to control the balance between isomerization and hydrocracking in an operation using a zeolite beta catalyst. Runaway conditions may be controlled by the addition of nitrogenous compounds to regulate the temperature profile within the reactor.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: July 9, 2002
    Assignee: Mobil Oil Corporation
    Inventors: Tai-Sheng Chou, Nai Yuen Chen, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian, Richard J. Quann, Stephen S. Wong
  • Method for controlling hydrocracking and isomerization dewaxing
    Patent number: 5419830
    Abstract: Nitrogenous compounds especially bases such as ammonia vapor are used to control the operation of a hydrocracker or catalytic dewaxer. Catalyst activity and selectivity may be controlled by addition of the base to the feed, for example, to control the balance between isomerization and hydrocracking in an operation using a zeolite beta catalyst. Runaway conditions may be controlled by the addition of nitrogenous compounds to regulate the temperature profile within the reactor.
    Type: Grant
    Filed: August 5, 1993
    Date of Patent: May 30, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Tai-Sheng Chou, Nai Y. Chen, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian, Richard J. Quann, Stephen S. Wong
  • Method for controlling hydrocracking operations
    Patent number: 5100535
    Abstract: Nitrogenous compounds especially bases such as amines are used to control the operation of a hydrocracker. Catalyst activity and selectivity may be controlled by addition of the base to the feed, for example, to control the balance between isomerization and conversion in an operation using a zeolite beta catalyst. Runaway conditions may be controlled by the addition of nitrogenous compounds and if they are added at intermediate points along the length of the reactor, the temperature profile within the reactor can be effectively regulated.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: March 31, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Nai Yuen Chen, Tai-Sheng Chou, Grant G. Karsner, Clinton R. Kennedy, Rene B. LaPierre, Melcon G. Melconian, Richard J. Quann, Stephen S. Wong
  • Heat balanced paraffin upgrading with co-fed oxygenate
    Patent number: 5019663
    Abstract: The endothermic heat of reaction for zeolite-catalyzed paraffin aromatization is provided by a co-fed oxygenate stream. Advantageously, the addition of a dehydrogenation metal to the zeolite reduces the reaction temperature for paraffin aromatization to a range suitable for the exothermic conversion of an oxygenate to C.sub.5 + gasoline. Preferred paraffinic feedstreams include C.sub.3 -C.sub.4 LGP and the preferred oxygenate is methanol.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: May 28, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Tai-Sheng Chou, Melcon G. Melconian
  • Fixed bed reactor operation
    Patent number: 4406777
    Abstract: A catalytic conversion process wherein a slowly deactivating catalyst contained in a multiplicity of fixed bed is operated in a serial fashion whereby the operating temperature of each catalyst bed is higher than the preceeding bed and the last catalyst bed in the series is removed from operation when a predetermined operating temperature is reached, the catalyst in the removed bed is reactivated or replaced and the reactivated or fresh bed is returned to service as the first bed in the series of fixed catalyst beds.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: September 27, 1983
    Assignee: Mobil Oil Corporation
    Inventor: Melcon G. Melconian