Patents by Inventor Micky QIAN

Micky QIAN 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).

  • Method and a system for separating and treating impurities from a hydrogen chloride liquid mixture
    Patent number: 11267703
    Abstract: The present invention relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture from the process for preparing isocyanate with phosgenation including sending hydrogen chloride liquid mixture into a gas-liquid separation column for separation to yield a liquid phase flow with impurities at the bottom of the gas-liquid separation column, neutralizing the liquid phase flow comprising impurities with an alkaline liquid in the neutralization tank to yield a neutralized solution, and sending the neutralized solution into a waste liquid treatment device from said neutralization tank for treatment.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 8, 2022
    Assignee: Covestro Deutschland AG
    Inventors: Andre Rittermeier, Rainer Hellmich, Alfred Soppe, Luyan Wu, Micky Qian, Peter Lehner, Jürgen Bittner, Friedhelm Steffens, Henrike Fink, Eric Jakobs
  • A METHOD AND A SYSTEM FOR SEPARATING AND TREATING IMPURITIES FROM A HYDROGEN CHLORIDE LIQUID MIXTURE
    Publication number: 20190194018
    Abstract: The present invention relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture, and particularly relates to a method and a system for separating and treating impurities from a hydrogen chloride liquid mixture produced from the process for preparing isocyanate with phosgenation.
    Type: Application
    Filed: June 30, 2017
    Publication date: June 27, 2019
    Applicant: Covestro Deutschland AG
    Inventors: Andre RITTERMEIER, Rainer HELLMICH, Alfred SOPPE, Luyan WU, Micky QIAN, Peter LEHNER, Jürgen BITTNER, Friedhelm STEFFENS, Henrike FINKE, Eric JAKOBS