Patents by Inventor Pengde ZHANG

Pengde ZHANG 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).

  • Experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid
    Patent number: 11453832
    Abstract: An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.
    Type: Grant
    Filed: November 21, 2020
    Date of Patent: September 27, 2022
    Assignees: SHANXI COKING COAL GROUP CO., LTD., CHINA UNIVERSITY OF MINING AND TECHNOLOGY, JIANGSU HYDROCARBON CLEAN ENERGY TECHNOL.RES.INST
    Inventors: Jinfang Liu, Xiahui Gui, Yin Peng, Linsheng Gong, Tiezhu Zhao, Pengde Zhang, Zijian Ma
  • EXPERIMENTAL METHOD FOR COAL DESULFURIZATION AND DEASHING USING PERMEATION AND SOLVATING POWER OF A SUPERCRITICAL FLUID
    Publication number: 20210155868
    Abstract: An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.
    Type: Application
    Filed: November 21, 2020
    Publication date: May 27, 2021
    Inventors: Jinfang LIU, Xiahui GUI, Yin PENG, Linsheng GONG, Tiezhu ZHAO, Pengde ZHANG, Zijian MA