Patents by Inventor Jürgen Perzlmeier

Jürgen Perzlmeier 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).

  • Patent number: 11525017
    Abstract: A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: December 13, 2022
    Assignee: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Juergen Perzlmeier
  • Publication number: 20220227903
    Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, drying the wet ethylene polymer particles by a gas stream and forming a gas stream carrying a hydrocarbon load, and thereafter separating the hydrocarbon load from the gas stream and thereby forming a liquid hydrocarbon recover stream, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor and a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, wherein a first part of the hydrocarbon recover stream is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 21, 2022
    Applicant: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Jürgen Perzlmeier, Mudit Ashtana, Harald Prang, Elke Damm
  • Publication number: 20220220233
    Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor, a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, and a wax removal unit operated by direct steam distillation for producing a gaseous hydrocarbon/steam mixture which is condensed and then separated into an aqueous phase and a hydrocarbon phase, wherein a first part of the hydrocarbon phase is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
    Type: Application
    Filed: May 28, 2020
    Publication date: July 14, 2022
    Applicant: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Jürgen Perzlmeier, Elke Damm, Harald Prang
  • Publication number: 20210130506
    Abstract: A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors wherein monomers are polymerized in the polymerization reactors which include a reactor outlet arranged in each reactor bottom for feeding a reactor slurry to a subsequent polymerization reactor and for emptying the polymerization reactor.
    Type: Application
    Filed: January 2, 2018
    Publication date: May 6, 2021
    Applicant: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Juergen Perzlmeier