Patents by Inventor Yin-An Liu

Yin-An Liu 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 gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization
    Patent number: 4212651
    Abstract: This invention relates to an improved device and method for the high gradient magnetic beneficiation of dry pulverized coal, for the purpose of removing sulfur and ash from the coal whereby the product is a dry environmentally acceptable, low-sulfur fuel. The process involves upwardly directed recirculating air fluidization of selectively sized powdered coal in a separator having sections of increasing diameters in the direction of air flow, with magnetic field and flow rates chosen for optimum separations depending upon particulate size.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: July 15, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David M. Eissenberg, Yin-An Liu