发明授权
- 专利标题： Cleaning of tray columns which have been used for rectificatively treating liquids comprising (meth)acrylic acid and/or esters thereof
- 专利标题（中）： 清洁已经用于整流处理包含（甲基）丙烯酸和/或其酯的液体的塔盘塔
-
申请号： US10505163申请日： 2003-03-04
-
公开(公告)号： US07331354B2公开(公告)日： 2008-02-19
- 发明人: Juergen Schroeder , Klaus Joachim Mueller-Engel , Volker Schliephake , Ulrich Hammon , Volker Diehl , Ulrich Jaeger
- 申请人： Juergen Schroeder , Klaus Joachim Mueller-Engel , Volker Schliephake , Ulrich Hammon , Volker Diehl , Ulrich Jaeger
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： DE10211273 20020313
- 国际申请： PCT/EP03/02186 WO 20030304
- 国际公布： WO03/076385 WO 20030918
- 主分类号： B08B3/00
- IPC分类号： B08B3/00 ; B08B9/00 ; B08B9/027 ; B08B3/08
摘要：
In process for cleaning tray columns which are used for the purposes of rectifiying liquids comprising (meth)acrylic compounds, a basic liquid is conveyed downward through the tray column and a gas is passed through the column in countercurrent to the basic liquid at an average gas phase differential pressure over all trays of at least 0.5 mbar/tray.
公开/授权文献
信息查询
