Patents by Inventor Yonghong Meng

Yonghong Meng 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).

  • High-efficiency supercritical oil extraction method
    Patent number: 10829715
    Abstract: A high-efficiency supercritical oil extraction method is provided. According to the method, in an early extraction stage, extraction is performed using an extractant along an extraction kettle from top to bottom; in a middle extraction stage, the extraction kettle is longitudinally flipped by 180 degrees, extraction is still performed using an extractant along the extraction kettle from top to bottom; in a later extraction stage, extraction is performed using a conventional extractant along the extraction kettle from bottom to top. Thus, the pressure effect and the critical extraction effect of the critical extractant are simultaneously exerted, thereby greatly improving the extraction efficiency of supercritical oil extraction, shortening the extraction time, and reducing the dosage of extractant, so as to achieve high-efficiency and low-cost oil extraction.
    Type: Grant
    Filed: September 30, 2017
    Date of Patent: November 10, 2020
    Assignee: SHAANXI NORMAL UNIVERSITY
    Inventors: Pengfei Niu, Nongxue Qiu, Xiaojie Su, Yurong Guo, Yonghong Meng, Hong Deng
  • High-efficiency supercritical oil extraction method
    Publication number: 20190330559
    Abstract: A high-efficiency supercritical oil extraction method is provided. According to the method, in an early extraction stage, extraction is performed using an extractant along an extraction kettle from top to bottom; in a middle extraction stage, the extraction kettle is longitudinally flipped by 180 degrees, extraction is still performed using an extractant along the extraction kettle from top to bottom; in a later extraction stage, extraction is performed using a conventional extractant along the extraction kettle from bottom to top. Thus, the pressure effect and the critical extraction effect of the critical extractant are simultaneously exerted, thereby greatly improving the extraction efficiency of supercritical oil extraction, shortening the extraction time, and reducing the dosage of extractant, so as to achieve high-efficiency and low-cost oil extraction.
    Type: Application
    Filed: September 30, 2017
    Publication date: October 31, 2019
    Inventors: Pengfei Niu, Nongxue Qiu, Xiaojie Su, Yurong Guo, Yonghong Meng, Hong Deng