- 专利标题： SAURE SCHLAMMADSORPTION VON DNT-ABWÄSSERN
- 专利标题（英）： Acid sludge adsorption of dnt waste water
-
申请号： EP10788085.8申请日： 2010-12-13
-
公开(公告)号： EP2513034A1公开(公告)日： 2012-10-24
- 发明人: FRITZ, Rüdiger , HEMPEL, Renate , ZÖLLINGER, Michael , MERTEN, Anne-Kathrin , ZSCHIESCHANG, Doris , HOMANN, Ina , GERSDORF, Annett , ALLARDT, Holger , REETZ, Reiner , FLEGEL, Elvira
- 申请人： BASF SE
- 申请人地址： 67056 Ludwigshafen DE
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： 67056 Ludwigshafen DE
- 代理机构： Ellwanger, Arndt
- 优先权： EP09179505 20091216
- 国际公布： WO2011082974 20110714
- 主分类号： C07C201/08
- IPC分类号： C07C201/08 ; C07C205/06 ; C07C205/12
摘要：
The invention relates to a method for treating alkaline process waste water from the nitration of aromatic compounds to mono-, di- and trinitroaromatic compounds having a pH value of 7.5 to 13, comprising the steps of a) acidifying the alkaline process waste water by adding concentrated sulfuric acid, which originates from the treatment of the aqueous phase comprising sulfuric acid occurring during nitration, to a pH value below 5, wherein a mixture A is created from a separating organic phase and acidic aqueous phase, b) bringing the mixture A into contact with fresh sludge and c) separating the sludge.
公开/授权文献
- EP2513034B1 SAURE SCHLAMMADSORPTION VON DNT-ABWÄSSERN 公开/授权日：2014-07-30
信息查询
