Patents by Inventor Shih-Cheng Chuang

Shih-Cheng Chuang 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).

  • System and method for treating salt-containing glycerin wastewater
    Patent number: 10364162
    Abstract: A system and a method for treating salt-containing glycerin wastewater are provided, wherein the system for treating the salt-containing glycerin wastewater includes a mixing tank, a filtering device, a distillation column, and a water supply device. The mixing tank is adapted to mix salt-containing glycerin wastewater with a concentrated hydrochloric acid to obtain a mixture. The filtering device communicates with the mixing tank and filters the mixture to obtain an acidic filtrate and a precipitated salt. The distillation column communicates with the filtering device and receives the acidic filtrate from the filtering device. The water supply device supplies water to the acidic filtrate. The system and method for treating the salt-containing glycerin wastewater can effectively recycle hydrochloric acid.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: July 30, 2019
    Assignees: National Tsing Hua University, Chang Chun Plastics Co., Ltd., Chang Chun Petrochemical Co., Ltd.
    Inventors: Shih-Cheng Chuang, Shi-Shang Jang, David S. H. Wong, Sheng-Chieh Wang, En-Ko Lee
  • SYSTEM AND METHOD FOR TREATING SALT-CONTAINING GLYCERIN WASTEWATER
    Publication number: 20190002305
    Abstract: A system and a method for treating salt-containing glycerin wastewater are provided, wherein the system for treating the salt-containing glycerin wastewater includes a mixing tank, a filtering device, a distillation column, and a water supply device. The mixing tank is adapted to mix salt-containing glycerin wastewater with a concentrated hydrochloric acid to obtain a mixture. The filtering device communicates with the mixing tank and filters the mixture to obtain an acidic filtrate and a precipitated salt. The distillation column communicates with the filtering device and receives the acidic filtrate from the filtering device. The water supply device supplies water to the acidic filtrate. The system and method for treating the salt-containing glycerin wastewater can effectively recycle hydrochloric acid.
    Type: Application
    Filed: August 9, 2017
    Publication date: January 3, 2019
    Applicants: National Tsing Hua University, Chang Chun Plastics Co., Ltd., Chang Chun Petrochemical Co., Ltd.
    Inventors: Shih-Cheng Chuang, Shi-Shang Jang, David S. H. Wong, Sheng-Chieh Wang, En-Ko Lee