Patents by Inventor ANDRE BOUCAUT

ANDRE BOUCAUT 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 and installation for concentrating aqueous hydrogen halide solutions
    Patent number: 10494258
    Abstract: A method for concentrating an aqueous hydrogen halide starting solution, in particular hydrochloric acid, includes the steps of extractive distillation of the aqueous hydrogen halide starting solution in the presence of an extraction agent in a distillation device, removing hydrogen halide vapor and/or hydrogen halide gas from the upper portion of the distillation device, removing an extraction-agent-containing solution from the lower portion of the distillation device, concentrating the extraction-agent-containing solution which is removed from the lower portion of the distillation device in an evaporation device, and returning the extraction-agent-containing solution which is concentrated in the evaporation device to the distillation device, wherein the extraction-agent-containing solution removed from the lower portion of the distillation device is concentrated in the evaporation device by evaporation at a pressure which is greater than atmospheric pressure.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: December 3, 2019
    Assignee: SGL Carbon SE
    Inventors: Peter Poellmann, Marcus Franz, Andre Boucaut, Rolf Ambrassat
  • METHOD AND INSTALLATION FOR CONCENTRATING AQUEOUS HYDROGEN HALIDE SOLUTIONS
    Publication number: 20150225234
    Abstract: A method for concentrating an aqueous hydrogen halide starting solution, in particular hydrochloric acid, includes the steps of extractive distillation of the aqueous hydrogen halide starting solution in the presence of an extraction agent in a distillation device, removing hydrogen halide vapor and/or hydrogen halide gas from the upper portion of the distillation device, removing an extraction-agent-containing solution from the lower portion of the distillation device, concentrating the extraction-agent-containing solution which is removed from the lower portion of the distillation device in an evaporation device, and returning the extraction-agent-containing solution which is concentrated in the evaporation device to the distillation device, wherein the extraction-agent-containing solution removed from the lower portion of the distillation device is concentrated in the evaporation device by evaporation at a pressure which is greater than atmospheric pressure.
    Type: Application
    Filed: April 20, 2015
    Publication date: August 13, 2015
    Inventors: PETER POELLMANN, MARCUS FRANZ, ANDRE BOUCAUT, ROLF AMBRASSAT