Production of chlorine dioxide from buffered reaction media

Details Production of chlorine dioxide from buffered reaction media Production of chlorine dioxide from buffered reaction media

1977-02-22

1978-04-25

Stern, Edward

Chemistry of inorganic compounds

Halogen or compound thereof

Chlorine dioxide

423499, 423504, C01B 1102, C01B 704, C01D 304

Patent

active

040863280

ABSTRACT:
Chlorine dioxide is produced in a continuous process by reaction of sodium chlorate and hydrochloric acid. The reaction medium is maintained at its boiling point under subatmospheric pressure and the resulting steam is used to dilute the chlorine dioxide and chlorine and remove the same from the reaction zone. Sodium chloride is deposited from the reaction medium in the reaction zone. The reaction medium also contains buffering anions and the actual hydrogen ion concentration of the reaction medium is maintained in the range of about 0.05 to 0.3 normal to maintain an economic production rate for the chlorine dioxide.

REFERENCES:
patent: 2863722 (1958-12-01), Rapson
patent: 3101253 (1963-08-01), Hirschberg
patent: 3563702 (1971-02-01), DE Vera Partridge et al.
patent: 3793439 (1974-02-01), Rapson
patent: 3829557 (1974-08-01), Winfield
patent: 3895100 (1975-07-01), Cowley
patent: 3929974 (1975-12-01), Winfield
patent: 3975506 (1976-08-01), Cowley
Hackh's Chem. Dictionary, 4th Ed. Revised, 1969, p. 114, The McGraw-Hill Book Co., N. Y.

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