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US4650906A Process for recovering ethyleneamines from aqueous solution of ethyleneamine carbonates 失效
从乙烯胺碳酸盐水溶液中回收乙撑胺的方法

Process for recovering ethyleneamines from aqueous solution of
ethyleneamine carbonates
摘要:
Ethyleneamines are recovered from an aqueous solution of carbonates of ethyleneamines by distilling an aqueous solution of carbonates of ethyleneamines including ethylenediamine, in which the molar ratio of the carbon dioxide component to the ethyleneamines including ethylenediamine is 0.01 to 0.5, whereby ethylenediamine is distilled out together with water. The aqueous solution to be distilled is advantageously prepared by heating an aqueous solution of carbonates of ethyleneamines including ethylenediamine to effect decarboxylation.
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