Process of making calcium hypochlorite

Details Process of making calcium hypochlorite Process of making calcium hypochlorite

1974-07-01

1976-05-11

Padgett, Benjamin R.

Chemistry of inorganic compounds

Halogen or compound thereof

Ternary compound

C01B 1106

Patent

active

039564711

ABSTRACT:
In the known process of preparing a slurry of calcium hypochlorite by reaction of chlorine with a slurry of calcium hydroxide and sodium hydroxide, we provide the improvement consisting of continuously pumping into a first stirred reactor an aqueous slurry of calcium hydroxide and sodium hydroxide optionally partially chlorinated and simultaneously passing chlorine gas into the reaction mixture at such a rate that the redox potential is in the range from 650-850 mV and allowing the contents of the first reactor to overflow continuously into a second stirred reactor and simultaneously passing chlorine gas into the second reactor at such a rate that the redox potential is in the range from 750-950 mV and allowing the contents of the second reactor to overflow and be removed as product; the temperature of the contents of the first and second reactor are independently maintained at a temperature in the range 15.degree. to 35.degree.C.

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patent: 3251647 (1966-05-01), Nicolaiser
patent: 3767775 (1973-10-01), Tatara et al.

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