Patents by Inventor Ali Hassan Al-Abdulal

Ali Hassan Al-Abdulal 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 increasing hydrogen partial pressure in hydroprocessing processes
    Patent number: 6740226
    Abstract: In a hydrocracking unit, the flash gases from the high-pressure separator are fed to the bottom of an absorption zone where the entering gases are counter-currently contacted with a lean solvent. The lean solvent absorbs away the contained methane, ethane, propane, butanes and pentanes (C1+) from the contained hydrogen. The overhead gas stream from the absorption zone typically contains hydrogen at a purity of 90 to 98 mol %, or even higher, which is fed to the recycle gas stream to provide hydrogen purity in the range of 96 to 99 mol %, thereby providing an increase in the overall efficiency of the hydroprocessor unit. The process can also be employed with hydrotreating, hydrodesulfurization, hydrodenitrogenation and hydrodealkylation reactors.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: May 25, 2004
    Assignee: Saudi Arabian Oil Company
    Inventors: Yuv Raj Mehra, Ali Hassan Al-Abdulal
  • Process for increasing hydrogen partial pressure in hydroprocessing processes
    Publication number: 20030132138
    Abstract: In a hydrocracking unit, the flash gases from the high-pressure separator are fed to the bottom of an absorption zone where the entering gases are counter-currently contacted with a lean solvent. The lean solvent absorbs away the contained methane, ethane, propane, butanes and pentanes (C1+) from the contained hydrogen. The overhead gas stream from the absorption zone typically contains hydrogen at a purity of 90 to 98 mol %, or even higher, which is fed to the recycle gas stream to provide hydrogen purity in the range of 96 to 99 mol %, thereby providing an increase in the overall efficiency of the hydroprocessor unit. The process can also be employed with hydrotreating, hydrodesulfurization, hydrodenitrogenation and hydrodealkylation reactors.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventors: Yuv Raj Mehra, Ali Hassan Al-Abdulal