Patents by Inventor Lin Feng NI

Lin Feng NI 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).

  • Process for distilling a crude composition in a rectification plant including an indirect heat pump
    Patent number: 12053725
    Abstract: A process for purifying a crude composition comprising rectifying the crude composition in a rectification plant. The rectification plant comprises a rectification column including: a first overhead condenser for condensing a head fraction, and a reboiler for evaporating a bottom fraction. A difference between a temperature of the head fraction and a temperature of the bottom fraction is less than or equal to 20° C. A heat pump is provided between the first overhead condenser and the reboiler. The heat pump is an indirect heat pump that is operated with water or methanol as a refrigerant, and the indirect heat pump includes an expansion valve and a compressor. The heat pump comprises a second condenser located upstream of the compressor.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: August 6, 2024
    Assignee: SULZER MANAGEMENT AG
    Inventors: Laurent Zuber, Lin Feng Ni
  • PROCESS FOR DISTILLING A CRUDE COMPOSITION IN A RECTIFICATION PLANT INCLUDING AN INDIRECT HEAT PUMP
    Publication number: 20220288504
    Abstract: A process for purifying a crude composition comprising rectifying the crude composition in a rectification plant. The rectification plant comprises a rectification column including: a first overhead condenser for condensing a head fraction, and a reboiler for evaporating a bottom fraction. A difference between a temperature of the head fraction and a temperature of the bottom fraction is less than or equal to 20° C. A heat pump is provided between the first overhead condenser and the reboiler. The heat pump is an indirect heat pump that is operated with water or methanol as a refrigerant, and the indirect heat pump includes an expansion valve and a compressor. The heat pump comprises a second condenser located upstream of the compressor.
    Type: Application
    Filed: July 6, 2020
    Publication date: September 15, 2022
    Inventors: Laurent ZUBER, Lin Feng NI