发明名称 |
Separation of acetic acid from dioxane by extractive distillation |
摘要 |
Dioxane cannot be completely removed from dioxane and acetic acid mixtures by distillation because of the presence of the maximum azeotrope. Dioxane can be readily removed from dioxane - acetic acid mixtures by extractive distillation in which the extractive agent is N,N-dimethylacetamide or dimethylformamide, either alone or mixed with certain high boiling organic compounds. Examples of effective agents are N,N-dimethylacetamide; dimethylformamide and heptanoic acid; N,N-dimethylacetamide, heptanoic acid and diethylene glycol diethyl ether.
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申请公布号 |
US4801358(A) |
申请公布日期 |
1989.01.31 |
申请号 |
US19880225199 |
申请日期 |
1988.07.28 |
申请人 |
BERG, LLOYD;SZABADOS, RUDOLPH J. |
发明人 |
BERG, LLOYD;SZABADOS, RUDOLPH J. |
分类号 |
B01D3/40;C07C51/44;C07D319/12;(IPC1-7):B01D3/40;C07C53/02 |
主分类号 |
B01D3/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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