发明申请
US20070043244A1 Method for extracting nitrocresols from waste water produced in the manufacture of mononitrotoluene and use of said extract
有权
用于在制造单硝基甲苯中生产的废水中提取硝基甲酚的方法和所述提取物的使用
- 专利标题： Method for extracting nitrocresols from waste water produced in the manufacture of mononitrotoluene and use of said extract
- 专利标题（中）： 用于在制造单硝基甲苯中生产的废水中提取硝基甲酚的方法和所述提取物的使用
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申请号： US10573020申请日： 2004-09-18
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公开(公告)号： US20070043244A1公开(公告)日： 2007-02-22
- 发明人: Johannes Buettner
- 申请人： Johannes Buettner
- 申请人地址： DE Ludwigshafen D67056
- 专利权人： Basf Aktiengesellschaft
- 当前专利权人： Basf Aktiengesellschaft
- 当前专利权人地址： DE Ludwigshafen D67056
- 优先权： DE10345601-5 20030929
- 国际申请： PCT/EP04/10497 WO 20040918
- 主分类号： A62D3/36
- IPC分类号： A62D3/36 ; A62D3/00 ; C07C205/21
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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