Carbon treatment of monohydrate crystallizer liquor
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United States of America Patent
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Nov 10, 1981
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N/A
app pub date -
Apr 9, 1980
filing date -
Dec 9, 1977
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Expired
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Abstract
Improved process for preparing sodium carbonate from crude trona without carbon column scaling by evaporating a portion of water from a clarified sodium carbonate solution to crystallize sodium carbonate crystals therefrom, separating the sodium carbonate crystals from the crystallizer liquor, passing only the crystallizer liquor which contains organic impurities through a carbon column to reduce the organic impurity concentration therein, and evaporating a portion of water from the carbon treated crystallizer liquor to crystallize additional sodium carbonate crystals.
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