Production of chlorine dioxide
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United States of America Patent
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Nov 19, 1991
Issued Date -
N/A
app pub date -
Sep 18, 1990
filing date -
Aug 10, 1988
priority date (Note) -
Expired
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Abstract
Chlorine dioxide is produced from sodium chlorate, sulphuric acid and methanol at the boiling point of the reaction medium under a subatmospheric pressure applied to a reaction zone. High purity of chlorine dioxide production is retained while the proportion of acid sodium sulphate in the product is decreased by effecting the reaction at high acidity in a physically-separate reaction zone from which the reaction products discharge into a mass of recycling sodium chlorate solution.
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