发明名称 |
PROCESSO PER IL RECUPERO DI FENOLO DA UN FLUSSO ACQUOSO CONTENENTE NA2 SO4 |
摘要 |
<p>The invention relates to a process for the recovery of phenol dissolved in an aqueous stream of a plant for the production of phenol from cumene, containing Na2SO4 and various organic impurities which consists in the extraction of the phenol with a solvent and its subsequent recovery from the extracted product by distillation or re-extraction and is characterized in that the extraction of phenol from the aqueous stream is carried out in a multistep extractor, using a ratio extracted product/refined product of between 0.1 and 1 v/v and at a temperature of between 20 DEG - 70 DEG C.</p> |
申请公布号 |
IT1271279(B) |
申请公布日期 |
1997.05.27 |
申请号 |
IT1994MI02529 |
申请日期 |
1994.12.15 |
申请人 |
ENICHEM S.P.A. |
发明人 |
ALESSI VANNI;ASTORI SABRINA;CELIN FRANCESCO;GRADELLA CECILIA;PENZO RENZO |
分类号 |
C07C37/72;C07C39/04;(IPC1-7):C07C |
主分类号 |
C07C37/72 |
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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