发明名称 |
Method for purifying an organic solvent for the purposes of absorption of maleic acid anhydride |
摘要 |
In a process for purifying an organic solvent for the absorption of maleic anhydride from a gaseous mixture, in which the maleic anhydride is separated off from the solvent, a substream is taken from the solvent stream, this substream is distilled and returned to the solvent circuit, the proposed improvement comprises separating off a low-boiling fraction and a high-boiling fraction from the fraction consisting essentially of purified solvent and feeding the fraction consisting essentially of purified solvent back into the solvent stream.
|
申请公布号 |
US2004127726(A1) |
申请公布日期 |
2004.07.01 |
申请号 |
US20030475219 |
申请日期 |
2003.10.20 |
申请人 |
RAHN RALLF-THOMAS;WECK ALEXANDER;KAIBEL GERD |
发明人 |
RAHN RALLF-THOMAS;WECK ALEXANDER;KAIBEL GERD |
分类号 |
C07D307/60;C07C51/215;C07C51/44;C07C51/573;C07C57/145;C07C57/15;(IPC1-7):C07D307/36 |
主分类号 |
C07D307/60 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|