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公开(公告)号:US6123812A
公开(公告)日:2000-09-26
申请号:US68549
申请日:1998-05-18
申请人: Bernd Bessling , Sebastian Zeck , Jurgen Pluckhan , Thomas Mayer , Ulrich Loffler , Gunter Spiegel , Rubens Ballenweg , Gerhard Brudi , Klaus Gieselberg , Lutz Hilprecht , Winfried Terjung , Heinz Auer , Axel Werner Polt , Stephan Scholl
发明人: Bernd Bessling , Sebastian Zeck , Jurgen Pluckhan , Thomas Mayer , Ulrich Loffler , Gunter Spiegel , Rubens Ballenweg , Gerhard Brudi , Klaus Gieselberg , Lutz Hilprecht , Winfried Terjung , Heinz Auer , Axel Werner Polt , Stephan Scholl
IPC分类号: B01D3/00 , B01D3/16 , C07D301/32 , C07D303/02 , C07D303/04 , B01D3/34 , B01D3/42
CPC分类号: C07D301/32 , B01D3/16 , Y10S203/20
摘要: A process for distilling ethylene oxide out of a mixture including ethylene oxide in a column at an absolute pressure of from 2 to 10 bar and a temperature of 20 to 180.degree. C. by withdrawing pure ethylene oxide in the liquid or gaseous state overhead or via a sidestream in the rectifying section of the column includes effecting the distillation in a column having on its inside a plurality of successive zones of structured sheet-metal packing or dumped beds of packing elements, these zones being assigned one or more extinguishing systems on the outside of the column.
摘要翻译: PCT No.PCT / EP96 / 04818 Sec。 371日期1998年5月18日 102(e)日期1998年5月18日PCT提交1996年11月5日PCT公布。 公开号WO97 / 19069 日期:1997年5月29日一种通过在液体或气体中抽出纯的环氧乙烷从绝对压力为2-10巴和温度为20至180℃的混合物中蒸馏出环氧乙烷的方法, 状态塔顶馏出物或通过塔的整流段中的侧流,包括在其内部进行蒸馏,该塔在其内部具有多个连续的结构化金属片状填料区域或填料元件的倾倒层,这些区域被分配一个或多个灭火剂 系统在外面的列。
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公开(公告)号:US6048441A
公开(公告)日:2000-04-11
申请号:US121865
申请日:1998-07-24
IPC分类号: B01D3/14 , B01D3/32 , C07C67/54 , C07C69/28 , C07C69/675
CPC分类号: B01D3/322 , B01D3/148 , C07C67/54 , Y10S203/20
摘要: Neopentyl glycol hydroxypivalate (NGH) is isolated from a mixture containing NGH, lower- and higher-boiling products and inorganic salts and purified in a two-stage process, whereinin a first separation stage, the inorganic salts and part of the higher-boiling products are separated off in a wiped-film evaporator and a vapor stream consisting of NGH, lower- and higher-boiling products is discharged and fed to a heat exchanger and condensed therein,and, in a second separation stage, the resulting condensate is distilled in a rectification column from which NGH is taken off in a side stream and condensed. Further discharges of the rectification column containing lower-boiling products or higher-boiling products are separately taken off. The higher-boiling products which comprise residual NGH are partly or completely recycled to the lower region of the rectification column.
摘要翻译: 从含有NGH,低沸点产物和无机盐的混合物中分离新戊二醇羟基新戊酸(NGH),并在两步法中纯化,其中在第一分离阶段,无机盐和部分较高沸点 将产物在擦膜蒸发器中分离,并将由NGH,低沸点产物和较高沸点产物组成的蒸气流排出并进料至热交换器并在其中冷凝,并在第二分离阶段将所得冷凝物蒸馏 在精馏塔中,NGH从侧馏分物中脱离并浓缩。 另外排出含有低沸点产物或高沸点产物的精馏塔。 包含残留NGH的较高沸点产物部分或完全再循环到精馏塔的下部区域。
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