Production of chlorine dioxide with conversion of by-product solid phase sodium acid sulphate to its neutral form
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United States of America Patent
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Apr 20, 1982
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N/A
app pub date -
Sep 22, 1980
filing date -
Sep 22, 1980
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Expired
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Abstract
A highly efficient chlorine 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 form 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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