Patents by Inventor Klaus Pilarczyk

Klaus Pilarczyk 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 FOR CLEANING AQUEOUS WASTEWATER STREAMS LOADED WITH NITROBENZENE
    Publication number: 20230234859
    Abstract: The present invention relates to a process for purifying a wastewater stream WW1 contaminated with nitrobenzene, comprising (I) stripping of the wastewater stream WW1 with a stripping gas SG1 in a continuously operated stripping column to obtain a wastewater stream WW2 which contains nitrobenzene in a concentration reduced relative to WW1 (cNB,WW2), (II) further purification of the wastewater stream WW2 in a wastewater treatment plant, wherein a target value (cNB,WW2,TARGET) is specified for the concentration of nitrobenzene in the wastewater stream WW2, which is greater than zero but takes into account the requirements of the wastewater treatment plant for the maximum content of nitrobenzene in the wastewater streams supplied thereto, wherein, for at least one combination of specified boundary conditions of (a) nitrobenzene concentration in WW1, (b) the temperature of WW1, and (c) the temperature of SG1, a set of linear mathematical relationships of the type mSG1=x·mWW1 is stored in a database, which linear
    Type: Application
    Filed: April 24, 2021
    Publication date: July 27, 2023
    Inventors: Thomas Rosin, Peter Drinda, Klaus Pilarczyk
  • Process for the production of nitrobenzene
    Patent number: 7326816
    Abstract: Nitrobenzene is produced and then purified using an acidic wash, an alkaline wash, a neutral wash, subjecting a dispersion formed in the neutral wash to electrophoresis to separate water and benzene from the nitrobenzene and recover purified nitrobenzene.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: February 5, 2008
    Assignee: Bayer MaterialScience AG
    Inventors: Thomas Knauf, Franz-Ulrich Von Gehlen, Jörg Schmiedler, Klaus Pilarczyk, Peter Drinda
  • Process for the production of nitrobenzene
    Publication number: 20070249873
    Abstract: Nitrobenzene is produced and then purified using an acidic wash, an alkaline wash, a neutral wash, subjecting a dispersion formed in the neutral wash to electrophoresis to separate water and benzene from the nitrobenzene and recover purified nitrobenzene.
    Type: Application
    Filed: January 30, 2007
    Publication date: October 25, 2007
    Inventors: Thomas Knauf, Franz-Ulrich Von Gehlen, Jorg Schmiedler, Klaus Pilarczyk, Peter Drinda