Patents by Inventor Dorien VELDHUIZEN

Dorien VELDHUIZEN 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 the separation of glycols
    Patent number: 10035744
    Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: July 31, 2018
    Assignee: SHELL OIL COMPANY
    Inventors: Pieter Huizenga, Kai Jürgen Fischer, Waldo Eugene De Villiers, Karin Bus, Dorien Veldhuizen
  • PROCESS FOR THE SEPARATION OF GLYCOLS
    Publication number: 20170313640
    Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.
    Type: Application
    Filed: November 4, 2015
    Publication date: November 2, 2017
    Inventors: Pieter HUIZENGA, Kai Jürgen FISCHER, Waldo Eugene DE VILLIERS, Karin BUS, Dorien VELDHUIZEN