Continuous process for the production of calcium hypochlorite

Details Continuous process for the production of calcium hypochlorite Continuous process for the production of calcium hypochlorite

C - Chemistry, Metallurgy

01

B

23/141

C01B 11/06 (2006.01)

Patent

CA 1045341

ABSTRACT OF THE DISCLOSURE 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 w 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 to 35°C.

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