Process for the selective absorption of chlorine and/or bromine

Details Process for the selective absorption of chlorine and/or bromine Process for the selective absorption of chlorine and/or bromine

1991-10-28

1992-06-23

Niebling, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Halogenous component

C01B 701, C01B 709

Patent

active

051241358

ABSTRACT:
The invention provides a process for the selective absorption of chlorine and/or bromine from CO.sub.2 -containing off-gases. The off-gas must contain at least 1 mol of SO.sub.2 per mol of Cl.sub.2 and/or per mol of Br.sub.2 ; if necessary sufficient SO.sub.2 is added to the off-gas to give the above-mentioned relative amount. Chlorine and/or bromine is absorbed by mixing the off-gas with steam and then cooling the mixture until the steam condenses. An example of a suitable apparatus is a vertical tube having an internal cooling coil.

REFERENCES:
patent: 2481241 (1949-09-01), Rapson et al.
patent: 3854901 (1974-12-01), Cowley
patent: 3962404 (1976-06-01), Giammarco et al.

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