High efficiency production of chlorine dioxide

Details High efficiency production of chlorine dioxide High efficiency production of chlorine dioxide

C - Chemistry, Metallurgy

01

D

23/100, 23/148

C01D 5/00 (2006.01) C01B 11/02 (2006.01)

Patent

CA 1149131

ABSTRACT OF THE DISCLOSURE A highly efficient chloride dioxide generating process which produces chlorine-free chlorine dioxide and neutral solid phase sodium sulphate from sodium chlorate, sulphuric acid and methanol is described. Solid phase sodium acid sulphate recovered from the high acidity reaction medium is metathesized using controlled quantities of water and controlled quantities of methanol to from the solid phase neutral sodium sulphate. Sulphuric acid recovered from the acid sulphate by the metathesis is recycled to the generator along with a part of the methanol used in the metathesis.

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