Process for disposing of halons or halon-containing...

Details Process for disposing of halons or halon-containing... Process for disposing of halons or halon-containing...

C - Chemistry, Metallurgy

01

B

C01B 7/19 (2006.01) B01D 53/70 (2006.01) B01D 53/75 (2006.01) B01J 19/08 (2006.01) C01B 7/01 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2092777

The invention relates to a process for disposing of bromofluorocarbons or bromochlorofluorocarbons (termed halons below) or mixtures thereof with fluorocarbons (FCs) or chlorofluorocarbons (CFCs). The invention comprises thermally cleaving halons or halon-containing FCs or halon-containing CFCs, for example by means of an oxyhydrogen flame, cooling the resulting gas stream, oxidizing the hydrogen bromide formed in the cleavage to bromine by feeding excess elemental chlorine into the gas stream, absorbing the resulting HF or HCl from the gas stream with recovery of hydrofluoric acid or hydrochloric acid and finally separating elemental bromine and chlorine from each other by distillation or reducing both to give the salts.

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