Method for selectively recovering sodium citrate from an aqueous solution
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United States of America Patent
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Jan 12, 1982
Grant Date -
N/A
app pub date -
Oct 31, 1979
filing date -
Oct 31, 1978
priority date (Note) -
Expired
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Abstract
A process for recovering sodium citrate from a solution utilized in an absorption/stripping process for SO.sub.2 recovery, which involves cooling a portion of the stripping solution to precipitate sodium sulfate, which is separated from the mother liquor. Thereafter, the mother liquor portion is subjected to an evaporative crystallization to precipitate sodium citrate, which is reintroduced along with fresh absorbent solution into the SO.sub.2 absorption/stripping process.
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