Patents Assigned to Celansese International Corporation
  • Process for purifying ethanol
    Patent number: 8704014
    Abstract: Purifying and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In addition, the process involves returning acetaldehyde separated from the crude ethanol product to the reactor.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: April 22, 2014
    Assignee: Celansese International Corporation
    Inventors: Radmila Wollrab, Nathan Bower, Josefina T. Chapman, Gerald Grusendorf, Victor J. Johnston, Lincoln Sarager, R. Jay Warner, Heiko Weiner