Patents by Inventor Gabriele Anken

Gabriele Anken 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).

  • Purification of ammonia by distillation
    Patent number: 7001490
    Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa0.5.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: February 21, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Wostbrock, Gerd Kaibel, Christian Tragut, Gabriele Anken
  • Purification of ammonia by distillation
    Publication number: 20010010286
    Abstract: Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa0.5.
    Type: Application
    Filed: January 24, 2001
    Publication date: August 2, 2001
    Inventors: Karl-Heinz Wostbrock, Gerd Kaibel, Christian Tragut, Gabriele Anken