Patents by Inventor Hoan Le Quoc Nguyen

Hoan Le Quoc Nguyen 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).

  • Method for regenerating ammonia water after capturing carbon dioxide with ammonia water and method for capturing carbon dioxide with ammonia water
    Patent number: 11311834
    Abstract: A method for regenerating ammonia water after capturing carbon dioxide with aqueous ammonia includes steps as follow. An ammonia water regenerating system is provided, wherein the ammonia water regenerating system includes a heat exchanger, a stripper, a second pump, a first flash drum, a first compressor, a second flash drum and a second compressor. A first flashing step is performed, wherein the rich solvent is flashed to form a first steam and a first flash liquid. A first compressing step is performed, wherein the first steam is compressed. A stripping step is performed, wherein the first flash liquid is stripped. A second flashing step is performed, wherein the lean solvent is flashed to form a second steam and a second flash liquid. A second compressing step is performed, wherein the second steam is compressed.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 26, 2022
    Assignee: National Tsing Hua University
    Inventors: Shang-Hsiao Wong, Hoan Le Quoc Nguyen
  • METHOD FOR REGENERATING AMMONIA WATER AFTER CAPTURING CARBON DIOXIDE WITH AMMONIA WATER AND METHOD FOR CAPTURING CARBON DIOXIDE WITH AMMONIA WATER
    Publication number: 20200353404
    Abstract: A method for regenerating ammonia water after capturing carbon dioxide with aqueous ammonia includes steps as follow. An ammonia water regenerating system is provided, wherein the ammonia water regenerating system includes a heat exchanger, a stripper, a second pump, a first flash drum, a first compressor, a second flash drum and a second compressor. A first flashing step is performed, wherein the rich solvent is flashed to form a first steam and a first flash liquid. A first compressing step is performed, wherein the first steam is compressed. A stripping step is performed, wherein the first flash liquid is stripped. A second flashing step is performed, wherein the lean solvent is flashed to form a second steam and a second flash liquid. A second compressing step is performed, wherein the second steam is compressed.
    Type: Application
    Filed: November 7, 2019
    Publication date: November 12, 2020
    Inventors: Shang-Hsiao Wong, Hoan Le Quoc Nguyen