专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明申请

WO2016173887A1 PROCESS FOR THE EPOXIDATION OF PROPENE 审中-公开
标题翻译：丙烯环氧化方法
公开(公告)号：WO2016173887A1
公开(公告)日：2016-11-03
申请号：PCT/EP2016/058638
申请日：2016-04-19
申请人： EVONIK DEGUSSA GMBH , THYSSENKRUPP INDUSTRIAL SOLUTIONS AG , JAHN, Robert , WÖLL, Wolfgang , JAEGER, Bernd , PASCALY, Matthias
发明人： JAHN, Robert , WÖLL, Wolfgang , JAEGER, Bernd , PASCALY, Matthias
IPC分类号： C07D303/04
CPC分类号： C07D301/12 , B01D3/34 , B01D3/4294 , B01D19/0409 , B01J29/89 , C07D301/36 , C07D303/04
摘要： In a process for the epoxidation of propene, comprising the steps: reacting propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent; separating non-reacted propene and propene oxide from the resulting reaction mixture to provide a solvent mixture comprising methanol and water in a combined amount of at least 90 % by weight; and feeding this solvent mixture as a feed stream to a continuously operated methanol distillation column at a feed point in the middle section of said column to provide an overhead product comprising at least 90 % by weight methanol and a bottoms product comprising at least 90 % by weight water; the addition of a liquid defoamer, having a solubility in the feed stream of less than 10 mg/kg at 25°C and a surface tension at the liquid air interface of less than 22 mN/m at 20 °C, at or above the feed point in an amount exceeding the solubility of the liquid defoamer in the feed stream suppresses foam formation in the methanol distillation column.
摘要翻译：在丙烯的环氧化方法中，包括以下步骤：在钛硅沸石催化剂和甲醇溶剂的存在下使丙烯与过氧化氢反应; 从所得反应混合物中分离未反应的丙烯和丙烯氧化物，以提供包含甲醇和水的溶剂混合物，其组合量为至少90重量％; 并将该溶剂混合物作为进料物流在所述塔的中间部分的进料点处连续操作的甲醇蒸馏塔，以提供包含至少90重量％甲醇的塔顶馏出物和包含至少90％重量水; 添加液体消泡剂，在25℃下在进料流中的溶解度小于10mg / kg，在20℃下在液态空气界面处的表面张力小于22mN / m，在等于或高于超过液体消泡剂在进料流中的溶解度的进料点抑制甲醇蒸馏塔中的泡沫形成。

IPRDB

热门服务

关于我们

友情链接

联系方式