Process for preparing chlorine dioxide

Details Process for preparing chlorine dioxide Process for preparing chlorine dioxide

1985-04-23

1987-07-07

Doll, John

Chemistry of inorganic compounds

Halogen or compound thereof

Chlorine dioxide

423486, 423529, 423531, C01B 701, C01B 1102, C01B 1774

Patent

active

046786538

ABSTRACT:
A process for production of chlorine dioxide and chlorine by reacting sodium chlorate with chloride ions and sulfuric acid where the chlorine ions partly are obtained from hydrochloric acid is described. In the process chlorine obtained as a by-product is reacted with sulfur dioxide in a reactor equipped with a condenser. The heat of reaction is removed by keeping the reactor at or above the boiling point of the reaction medium and the vapors are condensed in the condenser and brought back to the reactor. The obtained mixed acid comprising sulfuric acid and hydrochloric acid is returned to the chlorine dioxide reactor.

REFERENCES:
patent: 3714040 (1973-01-01), Jordan et al.
patent: 3864456 (1975-02-01), Winfield et al.
patent: 4086329 (1978-04-01), Cowley et al.
patent: 4393035 (1983-07-01), Fredette
patent: 4393036 (1983-07-01), Fredette
patent: 4508593 (1985-04-01), Bergstrom
Momentum, Heat, and Mass Transfer, 2nd Ed., C. O. Bennett & J. E. Myers, McGraw-Hill Book Co., 1974, pp. 687, 703.

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