Patents by Inventor Fangzheng YAN

Fangzheng YAN 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 detecting concentration of free SiO2 in coal dust
    Patent number: 11940376
    Abstract: A system for detecting a concentration of free SiO2 in coal dust includes a first sampling tube and a second sampling tube for sampling the coal dust, a three-way control valve communicated with the first sampling tube and the second sampling tube respectively, a photoacoustic spectrometry detection device communicated with the three-way control valve through a connecting pipeline, and a SiO2 reaction tube for reacting SiO2 in the coal dust; and the SiO2 reaction tube is disposed on the second sampling tube. In the present disclosure, a coal dust sampling line is convenient to change by disposing the three-way control valve, and the first sampling tube and the second sampling tube are respectively communicated with the photoacoustic spectrometry detection device, so as to perform a differential accurate detection of the reacted CO content, and to obtain the SiO2 content.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: March 26, 2024
    Assignee: Anhui University of Science and Technology
    Inventors: Huawei Jin, Fangzheng Yan, Lei Fang
  • SYSTEM AND METHOD FOR DETECTING CONCENTRATION OF FREE SIO2 IN COAL DUST
    Publication number: 20230314308
    Abstract: A system for detecting a concentration of free SiO2 in coal dust includes a first sampling tube and a second sampling tube for sampling the coal dust, a three-way control valve communicated with the first sampling tube and the second sampling tube respectively, a photoacoustic spectrometry detection device communicated with the three-way control valve through a connecting pipeline, and a SiO2 reaction tube for reacting SiO2 in the coal dust; and the SiO2 reaction tube is disposed on the second sampling tube. In the present disclosure, a coal dust sampling line is convenient to change by disposing the three-way control valve, and the first sampling tube and the second sampling tube are respectively communicated with the photoacoustic spectrometry detection device, so as to perform a differential accurate detection of the reacted CO content, and to obtain the SiO2 content.
    Type: Application
    Filed: December 28, 2022
    Publication date: October 5, 2023
    Applicant: Anhui University of Science and Technology
    Inventors: Huawei JIN, Fangzheng YAN, Lei FANG