Recovery of iodine

Details Recovery of iodine Recovery of iodine

1975-12-29

1977-07-19

Stern, Edward

Chemistry of inorganic compounds

Halogen or compound thereof

Elemental halogen

423500, 55 71, 252465, C01B 714

Patent

active

040369404

ABSTRACT:
Iodine is recovered from a process stream containing it or iodine-containing compounds by passing said stream while in the vapor state in contact with a solid treating agent or adsorbent comprising alumina impregnated with the oxides of copper and chromium and thereafter subjecting said solid treating agent to heating to a temperature from about 400.degree. to about 600.degree. C while passing a stream containing air or oxygen over it. The resulting effluent gas containing iodine can be fed directly back to the process from which it was derived or otherwise treated as by sublimation, for example, if desired.

REFERENCES:
patent: 1604153 (1926-10-01), Ellinger
patent: 1708287 (1929-04-01), Turrentine
patent: 3493325 (1970-02-01), Roth
patent: 3658467 (1972-04-01), Maeck
patent: 3838554 (1974-10-01), Wilhelm et al.
patent: 3880619 (1975-04-01), Richardson et al.

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