Patents by Inventor Wojciech Jozewicz

Wojciech Jozewicz 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).

  • Processes for removing acid components from gas streams
    Patent number: 5401481
    Abstract: The present disclosure relates to improved processes for treating acid gases to remove acid gas components therefrom. Processes in accordance with the present invention include preparing a calcium silicate hydrate sorbent in the form of a semi-dry, free-flowing powder, and treating the gas with the powdery sorbent, such as by injecting the sorbent into a stream of the gas. The powdery sorbents may be prepared by slurrying/drying or pressure hydration techniques. Examples disclosed herein demonstrate the utility of these processes in achieving improved acid gas-absorbing capabilities in both lab-scale and pilot plant studies. Additionally, disclosure is provided which illustrates preferred plant design configurations for employing the present processes using conventional dry sorbent injection equipment. Retrofit application to existing plants is also addressed.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: March 28, 1995
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary T. Rochelle, Claus Jorgensen, John C. S. Chang, Theodore G. Brna, Charles B. Sedman, Wojciech Jozewicz
  • Apparatus for removing sulfur from sulfur containing gases
    Patent number: 5270015
    Type: Grant
    Filed: August 6, 1991
    Date of Patent: December 14, 1993
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary T. Rochelle, Claus Jorgensen, John C. S. Chang, Theodore G. Brna, Charles B. Sedman, Wojciech Jozewicz
  • Processes for removing sulfur from sulfur-containing gases
    Patent number: 5047221
    Abstract: The present disclosure relates to improved processes for treating hot sulfur-containing flue gas to remove sulfur therefrom. Processes in accordance with the present invention include preparing an aqueous slurry composed of a calcium alkali source and a source of reactive silica and/or alumina, heating the slurry to above-ambient temperature for a period of time in order to facilitate the formation of sulfur-absorbing calcium silicates or aluminates, and treating the gas with the heat-treated slurry compounds. Examples disclosed herein demonstrate the utility of these processes in achieving improved sulfur-absorbing capabilities. Additionally, disclosure is provided which illustrates preferred configurations for employing the present processes both as a dry sorbent injection and for use in conjunction with a spray dryer and/or bagfilter. Retrofit application to existing systems is also addressed.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: September 10, 1991
    Assignee: Board of Regents, The University of Texas System
    Inventors: Wojciech Jozewicz, John C. S. Chang, Charles B. Sedman, Theodore G. Brna, Gary T. Rochelle
  • Process for removing sulfur from sulfur-containing gases
    Patent number: 4931264
    Abstract: The present disclosure relates to iThe government may own certain rights in the present invention pursuant to EPA Cooperative Agreement CR 81-1531.This is a continuation of U.S. Ser. No. 928,337, filed Nov. 7, 1986, now U.S. Pat. No. 4,804,521.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: June 5, 1990
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary T. Rochelle, Wojciech Jozewicz
  • Process for removing sulfur from sulfur-containing gases
    Patent number: 4804521
    Abstract: The present disclosure relates to improved processes for treating hot sulfur-containing flue gas to remove sulfur therefrom. Processes in accordaThe government may own certain rights in the present invention pursuant to EPA Cooperative Agreement CR 81-1531.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: February 14, 1989
    Assignee: Board of Regents, The University of Texas System
    Inventors: Gary T. Rochelle, Wojciech Jozewicz