Chemistry: electrical and wave energy – Processes and products
Patent
1982-09-29
1983-08-09
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
204128, 423437, 423462, 210749, 210757, C25B 134
Patent
active
043977200
ABSTRACT:
A process for removing chlorate ions from a recirculating anolyte brine as typically used in membrane chlor-alkali cells is disclosed. In this, a portion of the circulating brine after dechlorination and resaturation with additional alkali metal chloride is diverted and treated with an acidified aliphatic aldehyde to convert substantially all of the hypochlorite and chlorate to chlorine dioxide, chlorine gas and chloride ion. When performed in this manner, substantially lower quantities of acid are required as compared to prior art processes and the problems with the generation of excessive quantities of ClO.sub.2 are minimized.
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"Chelex 100 Chelating Ion Exchange Resin for Analysis, Removal or Recovery of Trace Metals", Bio.Rad Laboratories, Chemical Division, Product Information Sheet 2020, pp. 1-5, Mar. 1981.
Moore Sanders H.
Smith Maurice R.
Andrews R. L.
Clements Donald F.
Oaks Arthur E.
Olin Corporation
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