Process for the production of chlorine dioxide

Details Process for the production of chlorine dioxide Process for the production of chlorine dioxide

C - Chemistry, Metallurgy

01

B

C01B 11/02 (2006.01) C01D 3/04 (2006.01) C25B 1/26 (2006.01)

Patent

CA 2226651

Chlorine dioxide is produced from sodium chlorate and hydrochloric acid in the presence of a significant amount (at least about 22 gpl) of sodium dichromate to improve the efficiency of chlorine dioxide production. The process is integrated with a chlorate cell producing sodium chlorate for the chlorine dioxide generation from sodium chloride by-product from a chlorine dioxide generating process. The integration is effected to maintain a pH of about 6 to 7 in the chlorate cell in the presence of about 2 to about 7 gpl of sodium dichromate.

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