Patents Assigned to Compagnie Francaise de l'Azote Cofaz
  • Continuous process and equipment for the recovery of nitrogen oxides from nitrous gases
    Patent number: 4521390
    Abstract: This invention relates to a continuous process for the recovery of nitrogen oxides from a gaseous mixture containing, with other chemicals, said nitrogen oxides and in general some oxygen. This process is characterized by the fact that this gaseous mixture flows simultaneously with an aqueous liquid which may be pure water or an aqueous nitric acid solution over a carbonaceous adsorbing layer which may be made of activated carbon.
    Type: Grant
    Filed: October 13, 1982
    Date of Patent: June 4, 1985
    Assignee: Compagnie Francaise de l'Azote Cofaz
    Inventors: Bernhard Mouille, Michel Durand