Production process of chlorine

Details Production process of chlorine Production process of chlorine

1987-02-11

1988-09-27

Stoll, Robert L.

Chemistry of inorganic compounds

Halogen or compound thereof

Elemental halogen

423507, 423240, C01B 704

Patent

active

047740701

ABSTRACT:
Chlorine is produced by oxidizing byproduced hydrogen chloride. An offgas containing hydrogen chloride as a byproduct is reacted with oxygen at 300.degree.-500.degree. C. in the presence of a catalyst which contains chromic oxide (Cr.sub.2 O.sub.3) as a principal component. The resulting gas is cooled rapidly and then washed with water to recover vaporized chromium. The hydrogen chloride is then absorbed in water to recover it as an aqueous hydrochloric acid solution. The still remaining portion of the resultant gas is washed with sulfuric acid to remove water from the same, followed by compression and cooling. The resulting liquefied chlorine is separated. The still remaining gas composed principally of oxygen is thereafter returned to the oxidation step.

REFERENCES:
patent: 2299427 (1942-10-01), Rosenstein
patent: 2678259 (1954-05-01), Banner et al.
patent: 3006732 (1961-10-01), Baumgartner et al.
patent: 3542520 (1970-11-01), Borkowski
patent: 3989807 (1976-11-01), Johnston
patent: 4394367 (1983-07-01), Foster

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