| 发明名称 |
RECOVERY OF DIMETHYLFORMAMIDE BY CRYSTALLIZATION AND DISTILLATION |
| 摘要 |
Solvent recovery process and apparatus for separating pure dimethylformamide from admixture with sodium chloride and water using a first stage of partial evaporation producing salt crystallization and separation and a second stage of fractional distillation using a high volume bottom products flow.
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| 申请公布号 |
US3713991(A) |
申请公布日期 |
1973.01.30 |
| 申请号 |
USD3713991 |
申请日期 |
1970.05.27 |
| 申请人 |
PORVAIR LTD,GB |
发明人 |
THOMAS B,GB |
| 分类号 |
B01D3/00;B01D5/00;C07C67/00;C07C231/00;C07C231/24;C07C233/03;(IPC1-7):C07C103/36;B01D9/00 |
主分类号 |
B01D3/00 |
| 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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