Patents by Inventor Don Gelowitz

Don Gelowitz 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).

  • Catalytic method and apparatus for separating a gaseous component from an incoming gas stream
    Patent number: 9586175
    Abstract: A process for separating at least a portion of an acid gas from a gaseous mixture, said process comprising contacting the gaseous mixture with an absorption medium and/or adsorption medium, wherein said medium absorbs and/or adsorbs at least a portion of the acid gas to form a rich medium; and separating at least a portion of the acid gas from the rich medium to form a lean medium; wherein the separation step is performed in the presence of an acid catalyst.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: March 7, 2017
    Assignee: UNIVERSITY OF REGINA
    Inventors: Raphael Idem, Huancong Shi, Don Gelowitz, Paitoon Tontiwachwuthikul
  • Method and absorbent compositions for recovering a gaseous component from a gas stream
    Patent number: 9028593
    Abstract: A method and apparatus for recovering a gaseous component from an incoming gas stream is described. The incoming gas stream is contacted with a lean aqueous absorbing medium to absorb at least a portion of the gaseous component from the incoming gas stream to form a lean treated gas stream and a rich aqueous absorbing medium. At least a portion of the gaseous component is desorbed from the rich aqueous absorbing medium at a temperature to form an overhead gas stream and a regenerated aqueous absorbing medium. At least a portion of the overhead gas stream is treated to recover a condensate stream. At least a portion of the condensate stream is used to form a heated stream. At least a portion of the heated stream is recycled back to the desorbing step. Novel absorbing medium compositions to recover carbon dioxide and/or hydrogen sulfide are also described.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: May 12, 2015
    Assignee: University of Regina
    Inventors: Don Gelowitz, Paitoon Tontiwachwuthikul, Raphael Idem
  • CATALYTIC METHOD AND APPARATUS FOR SEPARATING A GASEOUS COMPONENT FROM AN INCOMING GAS STREAM
    Publication number: 20130108532
    Abstract: A process for separating at least a portion of an acid gas from a gaseous mixture, said process comprising contacting the gaseous mixture with an absorption medium and/or adsorption medium, wherein said medium absorbs and/or adsorbs at least a portion of the acid gas to form a rich medium; and separating at least a portion of the acid gas from the rich medium to form a lean medium; wherein the separation step is performed in the presence of an acid catalyst.
    Type: Application
    Filed: March 29, 2011
    Publication date: May 2, 2013
    Applicant: UNIVERSITY OF REGINA
    Inventors: Raphael Idem, Huancong Shi, Don Gelowitz, Paitoon Tontiwachwuthikul
  • Method and absorbent composition for recovering a gaseous component from a gas stream
    Patent number: 8388737
    Abstract: A method and apparatus for recovering a gaseous component from an incoming gas stream is described. The incoming gas stream is contacted with a lean aqueous absorbing medium to absorb at least a portion of the gaseous component from the incoming gas stream to form a lean treated gas stream and a rich aqueous absorbing medium. At least a portion of the gaseous component is desorbed from the rich aqueous absorbing medium at a temperature to form an overhead gas stream and a regenerated aqueous absorbing medium. At least a portion of the overhead gas stream is treated to recover a condensate stream. At least a portion of the condensate stream is used to form a heated stream. At least a portion of the heated stream is recycled back to the desorbing step. Novel absorbing medium compositions to recover carbon dioxide and/or hydrogen sulfide are also described.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: March 5, 2013
    Assignee: University of Regina
    Inventors: Don Gelowitz, Paitoon Tontiwachwuthikul, Raphael Idem
  • METHOD AND ABSORBENT COMPOSITION FOR RECOVERING A GASEOUS COMPONENT FROM A GAS STREAM
    Publication number: 20100229723
    Abstract: A method and apparatus for recovering a gaseous component from an incoming gas stream is described. The incoming gas stream is contacted with a lean aqueous absorbing medium to absorb at least a portion of the gaseous component from the incoming gas stream to form a lean treated gas stream and a rich aqueous absorbing medium. At least a portion of the gaseous component is desorbed from the rich aqueous absorbing medium at a temperature to form an overhead gas stream and a regenerated aqueous absorbing medium. At least a portion of the overhead gas stream is treated to recover a condensate stream. At least a portion of the condensate stream is used to form a heated stream. At least a portion of the heated stream is recycled back to the desorbing step. Novel absorbing medium compositions to recover carbon dioxide and/or hydrogen sulfide are also described.
    Type: Application
    Filed: May 29, 2008
    Publication date: September 16, 2010
    Applicant: UNIVERSITY OF REGINA
    Inventors: Don GELOWITZ, Paitoon TONTIWACHWUTHIKUL, Raphael IDEM