发明名称 |
VERFAHREN ZUR REINIGUNG VON DIMETHYLACETAMID (DMAC) |
摘要 |
The invention relates to a process for distillatively purifying crude dimethylacetamide (crude DMAc) comprising DMAc, low boilers and high boilers 5 by removing the low boilers and the high boilers to obtain pure DMAc in one of the column configurations listed hereinbelow: (I) a main column (MC) with sidestream column (SC) or (II) a dividing wall column (DWC), which operating at least the main column (MC) in column configuration (I) and the dividing wall column (DWC) in column configuration (II) at a top pressure in the range from 0.5 to 1.8 bar absolute. |
申请公布号 |
AT358666(T) |
申请公布日期 |
2007.04.15 |
申请号 |
AT20040725673T |
申请日期 |
2004.04.05 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
PESCHEL, WERNER;SCHOENMAKERS, HARTMUT;ALTHAUS, KLAUS;KIRCHNER, TANJA;STAATZ, HARTMUT |
分类号 |
C07C231/24;C07C233/05 |
主分类号 |
C07C231/24 |
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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