Patents by Inventor Purvis K. Ho

Purvis K. Ho 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 ultra low benzene reformate using catalytic distillation
    Patent number: 9315741
    Abstract: A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; and hydrogenating the benzene concentrate fraction to form a hydrocarbon fraction having a reduced benzene concentration.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: April 19, 2016
    Assignee: Catalytic Distillation Technologies
    Inventors: Montri Vichailak, Purvis K. Ho, Martinus J. Almering, Arvids Judzis, Jr., Willibrord A. Groten, Lawrence A. Smith, Jr., Yongqiang Xu
  • Use of catalytic distillation for benzene separation and purification
    Patent number: 8395002
    Abstract: A process for recovering benzene, the process including: feeding hydrogen and a hydrocarbon fraction comprising benzene, components lighter than benzene, components heavier than benzene, and diolefins to a catalytic distillation reactor system comprising at least one reaction zone comprising a hydrogenation catalyst; concurrently in the catalytic distillation reactor system: contacting the diolefins and hydrogen in the presence of the hydrogenation catalyst to selectively hydrogenate at least a portion of the diolefins; and fractionating the hydrocarbon fraction to form a fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; recovering the heavies fraction from the first catalytic distillation reactor system as a bottoms fraction; and withdrawing the fraction comprising benzene and other C6 hydrocarbons from the catalytic distillation reactor system as a benzene concentrate fraction.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: March 12, 2013
    Assignee: Catalytic Distillation Technologies
    Inventors: Martinus J. Almering, Purvis K. Ho, Mitchell E. Loescher, Montri Vichailak
  • SELECTIVE DESULFURIZATION OF FCC GASOLINE
    Publication number: 20120048778
    Abstract: Processes for the desulfurization of high end point naphtha, such as naphtha fractions having an ASTM D-86 end point of greater than 450° F., greater than 500° F., or greater than 550° F., and containing hindered sulfur compounds, are disclosed.
    Type: Application
    Filed: November 12, 2010
    Publication date: March 1, 2012
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventors: Gary G. Podrebarac, Arvids Judzis, Purvis K. Ho, Mahesh Subramanyam, Luis Simoes
  • USE OF CATALYTIC DISTILLATION FOR BENZENE SEPARATION AND PURIFICATION
    Publication number: 20100228063
    Abstract: A process for recovering benzene, the process including: feeding hydrogen and a hydrocarbon fraction comprising benzene, components lighter than benzene, components heavier than benzene, and diolefins to a catalytic distillation reactor system comprising at least one reaction zone comprising a hydrogenation catalyst; concurrently in the catalytic distillation reactor system: contacting the diolefins and hydrogen in the presence of the hydrogenation catalyst to selectively hydrogenate at least a portion of the diolefins; and fractionating the hydrocarbon fraction to form a fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; recovering the heavies fraction from the first catalytic distillation reactor system as a bottoms fraction; and withdrawing the fraction comprising benzene and other C6 hydrocarbons from the catalytic distillation reactor system as a benzene concentrate fraction.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 9, 2010
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventors: Martinus J. Almering, Purvis K. Ho, Mitchell E. Loescher, Montri Vichailak
  • PROCESS FOR ULTRA LOW BENZENE REFORMATE USING CATALYTIC DISTILLATION
    Publication number: 20100063334
    Abstract: A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; and hydrogenating the benzene concentrate fraction to form a hydrocarbon fraction having a reduced benzene concentration.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 11, 2010
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventors: Montri Vichailak, Purvis K. Ho, Martinus J. Almering, Arvids Judzis, JR., Willibrord A. Groten, Lawrence A. Smith, JR., Yongqiang Xu
  • Process for sulfiding catalyst in a column
    Patent number: 6503864
    Abstract: A process for the sulfiding of a hydrodesulfurization catalyst for example in a distillation column reactor. The catalyst in the distillation column reactor is first dried using nitrogen and the reactor is filled with a sulfiding solvent and circulation begun. The reactor is heated to a temperature above the decomposition temperature of the sulfiding agent to be used and the sulfiding agent charged to the reactor. When sulfiding agent breakthrough is noted in the overheads the temperature is raised and held until sulfiding is complete.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: January 7, 2003
    Assignee: Catalytic Distillation Technologies
    Inventors: Mitchell E. Loescher, Gary G. Podrebarac, Purvis K. Ho
  • Process for sulfiding catalyst in a column
    Publication number: 20020132731
    Abstract: A process for the sulfiding of a hydrodesulfurization catalyst for example in a distillation column reactor. The catalyst in the distillation column reactor is first dried using nitrogen and the reactor is filled with a sulfiding solvent and circulation begun. The reactor is heated to a temperature above the decomposition temperature of the sulfiding agent to be used and the sulfiding agent charged to the reactor. When sulfiding agent breakthrough is noted in the overheads the temperature is raised and held until sulfiding is complete.
    Type: Application
    Filed: February 8, 2001
    Publication date: September 19, 2002
    Inventors: Mitchell E. Loescher, Gary G. Podrebarac, Purvis K. Ho