公开(公告)号：US20020033325A1

公开(公告)日：2002-03-21

申请号：US09918648

申请日：2001-08-01

发明人： Teruyuki Ninomiya ,  Toshio Watanabe ,  Atsushi Iwamoto ,  Soemu Miyashita ,  Masafumi Watanabe

IPC分类号： B01D003/12 ,  B01D009/00 ,  C07C027/28

CPC分类号： C07C41/01 ,  C07C41/40 ,  C07C41/42 ,  C07C43/132

摘要： The present invention provides a process for recovering ditrimethylolpropane from a still residue obtained by extracting and then distilling off trimethylolpropane from a reaction solution obtained by reacting n-butyraldelhyde with formaldehyde in the presence of a basic catalyst, wherein the still residue is distilled to remove high-boiling components therefrom, and the resultant distillate is subjected to crystallization. When the above process is combined with the acid decomposition, it becomes possible to decompose a linear formal compound obtained from 2 molecules of TMP contained in the still residue as crude TMP and one molecule of formaldehyde, so that di-TMP having a higher purity is obtained.

摘要翻译： 本发明提供从通过在碱性催化剂存在下将正丁醛与甲醛反应获得的反应溶液萃取，然后蒸馏出三羟甲基丙烷所得的静止残余物中回收二羟甲基丙烷的方法，其中将残余物蒸馏除去高 沸腾成分，并使得到的馏出物进行结晶。 当上述方法与酸分解结合时，可以将残留物中所含的2分子TMP得到的线性形式化合物分解为粗TMP和一分子甲醛，使得具有较高纯度的二-TMP为 获得。

公开(公告)号：US20020000366A1

公开(公告)日：2002-01-03

申请号：US09938012

申请日：2001-08-23

申请人： ARCO CHEMICAL TECHNOLOGY, L.P.

发明人： Vijai P. Gupta

IPC分类号： B01D003/38 ,  C07C007/05 ,  C07C027/28 ,  C07C041/42

CPC分类号： C07C29/84 ,  B01D3/40 ,  C07B63/00 ,  C07C41/42 ,  Y10S203/11 ,  C07C43/11 ,  C07C31/205 ,  C07C31/202

摘要： A distillation procedure is provided for the separation of impurities from organic materials such as glycols and glycol ethers whereby a liquid stripping component is interfaced into a distillation column with or below the organic material introduction, heat being provided by a reboiler, the stripping component and impurities being removed overhead.

摘要翻译： 提供了一种蒸馏方法，用于从有机材料如二醇和二醇醚中分离杂质，由此将液体汽提组分与有机材料导入或低于有机材料导入的蒸馏塔相接口，由再沸器提供的热量，汽提组分和杂质 被清除。

公开(公告)号：US20030213689A1

公开(公告)日：2003-11-20

申请号：US10147621

申请日：2002-05-16

发明人： Bonnie G. McKinnie ,  Robert E. Williams ,  Gary L. Sharp ,  Alireza M. Dadgar

IPC分类号： B01D003/34 ,  C07C027/28

CPC分类号： B01D3/34 ,  Y10S203/11 ,  Y10S203/14

摘要： A process is described for preventing plugging of distillation equipment when the distillable liquid comprises a mixture of different liquids containing a dissolved substance tending to precipitate from the distillate. An adjuvant is provided to the mixture to be distilled, which adjuvant forms a composition with the dissolved substance that, if isolated, melts at a lower temperature than the distillation temperature.

摘要翻译： 描述了一种用于防止蒸馏设备堵塞的方法，当可馏液体包含含有倾向于从馏出物沉淀的溶解物质的不同液体的混合物时。 向要蒸馏的混合物中提供佐剂，该佐剂与溶解的物质形成组合物，如果分离，则该物质在比蒸馏温度低的温度下熔化。

公开(公告)号：US20030146080A1

公开(公告)日：2003-08-07

申请号：US10312884

申请日：2003-01-02

发明人： Joaquim Henrique Teles ,  Alwin Rehfinger ,  Peter Bassler ,  Anne Wenzel ,  Norbert Rieber ,  Peter Rudolf

IPC分类号： B01D003/00 ,  C07C027/28 ,  C07C029/80

CPC分类号： C07D301/32 ,  C07D301/12 ,  Y10S203/22 ,  Y10S203/24

摘要： A process for the preparation of propylene oxide in the presence of methanol, in which propylene oxide is separated from a mixture comprising propylene oxide and methanol, and the resultant mixture comprising methanol is worked up, which comprises separating methanol from a mixture comprising methanol and methyl formate during the work-up.

摘要翻译： 一种在甲醇存在下制备环氧丙烷的方法，其中环氧丙烷与包含环氧丙烷和甲醇的混合物分离，并且所得到的包含甲醇的混合物被处理，其包括从包含甲醇和甲基的混合物中分离甲醇 在后勤期间。