Patents Assigned to Societe Nationale des Poudres et Expolsifs, Antar Petroles de l'Atlantique: Antargaz
  • Process and installation for concentrating dilute solutions of corrosive products
    Patent number: 3970511
    Abstract: Dilute solutions of corrosive products, such as sulphuric or phosphoric acid, are concentrated by pre-concentrating the dilute solution and then introducing the pre-concentrated solution into a tunnel in which it flows in a thin layer over successive cascades while being heated, preferably by indirect radiant heating. An installation for carrying out the process is also described.
    Type: Grant
    Filed: December 18, 1973
    Date of Patent: July 20, 1976
    Assignee: Societe Nationale des Poudres et Expolsifs, Antar Petroles de l'Atlantique: Antargaz
    Inventors: Roger M. Rat, Francois A. Pollozec, Jean J. Patouillet