Patents by Inventor Zhigou Hou

Zhigou Hou 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).

  • Desulfurizing organosulfur heterocycles in feeds with supported sodium
    Patent number: 7507327
    Abstract: Refractory or hard sulfur found in a hydrocarbon stream containing refractory sulfur heterocycle compounds, particularly those exhibiting steric hindrance, is removed from the stream by contacting it with a sodium reagent comprising a sodium component, having free sodium, supported on a solid support component. If the hydrocarbon stream contains more labile or easy sulfur, then it is treated, typically by hydrodesulfurization, to remove at least most of the labile sulfur before it is contacted with the sodium reagent. This is useful for bringing the sulfur level of middle distillate fuel streams, such as diesel and jet fuel fractions, down to a level of less than about 10 wppm, employing conventional hydrodesulfurizing catalysts and conditions.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: March 24, 2009
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jeffrey M. Dysard, Zhigou Hou, Jonathan M. McConnachie, Andrzej Malek, Ramesh Gupta, William E. Lewis
  • Desulfurizing organosulfur heterocycles in feeds with supported sodium
    Publication number: 20060065577
    Abstract: Refractory or hard sulfur found in a hydrocarbon stream containing refractory sulfur heterocycle compounds, particularly those exhibiting steric hindrance, is removed from the stream by contacting it with a sodium reagent comprising a sodium component, having free sodium, supported on a solid support component. If the hydrocarbon stream contains more labile or easy sulfur, then it is treated, typically by hydrodesulfurization, to remove at least most of the labile sulfur before it is contacted with the sodium reagent. This is useful for bringing the sulfur level of middle distillate fuel streams, such as diesel and jet fuel fractions, down to a level of less than about 10 wppm, employing conventional hydrodesulfurizing catalysts and conditions.
    Type: Application
    Filed: September 14, 2005
    Publication date: March 30, 2006
    Inventors: Jeffrey Dysard, Zhigou Hou, Jonathan McConnachie, Andrzej Malek, Ramesh Gupta, William Lewis