Patents Assigned to Octel-Kuhlmann
  • Patent number: 3959450
    Abstract: Pure liquid bromine is produced directly from an acidic aqueous bromide mother liquor by reacting it with about 80 to about 90% of the amount of chlorine stoichiometrically equivalent to the bromide present in the whole supplied mother liquor and collecting the liquid bromine which separates out of solution; the remaining mother liquor free from liquid bromine is steam distilled in the presence of sufficient chlorine to convert the rest of the bromide to bromine and to condense crude liquid bromine which is purified by washing with sufficient fresh mother liquor. Production capacity is increased by about 20% compared to conventional process in which all the bromine is submitted to steam distillation.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: May 25, 1976
    Assignee: Octel-Kuhlmann
    Inventors: Georges Calloue, Jean Hughes