Patents Assigned to Akzo NVV.
  • Process for removing mercury from a gas
    Patent number: 4196173
    Abstract: Mercury is removed from gases containing mercury vapor by passing the gases continuously through a bed of activated carbon on which a halogen is adsorbed. The bed may have a thickness of at most 5 cm. The chlorine content of the active carbon is maintained between 5% and 12% by weight. This is preferably effected by adding chlorine to the gases in an amount such that the carbon is caused to absorb a quantity thereof which equals the quantity that is consumed during the adsorption of mercury.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: April 1, 1980
    Assignee: Akzo NVV.
    Inventors: Geert J. deJong, Hendrik J. Vos