Chemistry of inorganic compounds – Halogen or compound thereof – Chlorine dioxide
Patent
1994-08-23
1997-01-14
Straub, Gary P.
Chemistry of inorganic compounds
Halogen or compound thereof
Chlorine dioxide
423478, 423479, 423551, C01D 500, C01B 1102
Patent
active
055936539
ABSTRACT:
Sodium sesquisulfate produced in crystalline form in a high acidity highly efficient chlorine dioxide generating process is converted by metathesis to crystalline anhydrous neutral sodium sulfate and the acid recovered as a result is recycled to the chlorine dioxide generating step. The metathesis is effected by contacting the crystalline sodium sesquisulfate with aqueous sodium chlorate solution, aqueous sodium chloride solution, aqueous methanol or water alone. The metathesis is effected in such manner as to minimize the additional evaporative load imposed on the chlorine dioxide generating process by the metathesis medium.
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Bechberger Edward J.
Fredette Maurice C. J.
Pu Chunmin
Scribner Herbert C.
Sterling Canada Inc.
Straub Gary P.
Vanoy Timothy C.
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