Patents Examined by Marible Medina
  • Method for removing nitrogen oxides from an oxygen-containing flue gas stream
    Patent number: 6517794
    Abstract: A method for removing nitrogen oxides from a lean flue gas. The method is carried out by: a) treating the flue gas in an electrical gas discharge, b) passing the thus treated flue gas over a basic storage material to store the nitrogen oxides in the form of nitrates and release of the treated flue gas to the environment, and c) regeneration of the storage material after depletion of its storage capacity by removing the storage material from the flue gas stream and treating it was a reducing regenerative gas stream while forming ammonia.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: February 11, 2003
    Assignee: DMC
    Inventors: Jürgen Gieshoff, Jürgen Lang