Patents by Inventor Charles Qiang Jia

Charles Qiang Jia 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 the desulfurization of sulfur dioxide-containing gases
    Patent number: 6030592
    Abstract: The process of invention provides a simplified conversion of sulfur dioxide gas into hydrogen sulfide gas. First, sulfur dioxide gas is absorbed into an aqueous sulfide solution to form sulfite and bisulfide ions. Second, additional sulfur dioxide gas is absorbed into the aqueous solution to form hydrogen sulfide. Third, another portion of the sulfur dioxide is absorbed and reacts in the aqueous solution to form bisulfite. Most advantageously, the bisulfite is decomposed into sulfur dioxide and sulfite. The sulfite is then reduced to sulfide and returned for use in the absorption process. The hydrogen sulfide may then be reacted with SO.sub.2 via the Claus reaction to form elemental sulfur.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 29, 2000
    Assignees: Inco Limited, McMaster University
    Inventors: Wei-Kao Lu, Charles Qiang Jia, Vishwaprakash Satyanarayan Hegde, Steven Hoi-Chiu Ng