Patents by Inventor Heather D. Tsihlis

Heather D. Tsihlis 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).

  • Methods and apparatuses for phenol fractionation in a single dividing wall column
    Patent number: 9815756
    Abstract: This present disclosure relates to processes and apparatuses for use of a single dividing wall distillation column for phenol fractionation. More specifically, the present disclosure relates to processes and apparatuses for phenol fractionation by combining crude acetone column and cumene-AMS column into a single dividing wall distillation column. The proper allocation of steam or water injection, chemical treatment reactor and internal liquid phase separator, the positioning of the side draw enables high yield of acetone and phenol.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 14, 2017
    Assignee: UOP LLC
    Inventors: Robert J. Schmidt, Charlotte Y. Fang, Russell C. Schulz, Xin X. Zhu, Scott R. Keenan, Chad A. Williams, Heather D. Tsihlis, Jose L. Miramontes, Robert E. Tsai
  • METHODS AND APPARATUSES FOR PHENOL FRACTIONATION IN A SINGLE DIVIDING WALL COLUMN
    Publication number: 20170283350
    Abstract: This present disclosure relates to processes and apparatuses for use of a single dividing wall distillation column for phenol fractionation. More specifically, the present disclosure relates to processes and apparatuses for phenol fractionation by combining crude acetone column and cumene-AMS column into a single dividing wall distillation column. The proper allocation of steam or water injection, chemical treatment reactor and internal liquid phase separator, the positioning of the side draw enables high yield of acetone and phenol.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 5, 2017
    Inventors: Robert J. Schmidt, Charlotte Y. Fang, Russell C. Schulz, Xin X. Zhu, Scott R. Keenan, Chad A. Williams, Heather D. Tsihlis, Jose L. Miramontes, Robert E. Tsai