发明名称 |
Method for extracting nitrocresols from waste water produced in the manufacture of mononitrotoluene and use of said extract |
摘要 |
The invention provides a process for removing nitrocresols from wastewater of mononitrotoluene preparation, which comprises acidifying the alkaline wastewater of mononitrotoluene preparation with acids to a pH of at most 3 and treating the nitrocresols with an extractant. The invention further provides the preparation of dinitrotoluene by use of the nitrocresol-containing extracts as a feedstock.
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申请公布号 |
US7449610(B2) |
申请公布日期 |
2008.11.11 |
申请号 |
US20040573020 |
申请日期 |
2004.09.18 |
申请人 |
BASF SE |
发明人 |
BUETTNER JOHANNES;ALLARDT HOLGER;TONDER REINHARD;REETZ REINER;REICHELT MICHAEL |
分类号 |
C07C205/06;C02F1/26;C07C201/16 |
主分类号 |
C07C205/06 |
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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