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公开(公告)号:US5545780A
公开(公告)日:1996-08-13
申请号:US385280
申请日:1995-02-08
申请人: Peter Schwarzmaier , Peter Hackl , Manfred Stoger , Ingolf Mielke
发明人: Peter Schwarzmaier , Peter Hackl , Manfred Stoger , Ingolf Mielke
CPC分类号: C07C17/25
摘要: The conversion rate in the preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane is determined by measuring the absorption of high-energy radiation, the pressure and the temperature of the gases issuing from the cracking furnace.
摘要翻译: 通过1,2-二氯乙烷的热裂解制备氯乙烯的转化率通过测量高能辐射的吸收,从裂化炉发出的气体的压力和温度来确定。
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公开(公告)号:US5507920A
公开(公告)日:1996-04-16
申请号:US350626
申请日:1994-12-07
IPC分类号: B01J14/00 , C07C17/25 , C07C17/383 , C07C17/389 , C07C21/06 , B01D15/00
CPC分类号: C07C17/25 , C07C17/383 , B01J2219/00006
摘要: In the preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane, three distillation stages are used to distill off first hydrogen chloride, then vinyl chloride and finally entrained hydrogen chloride with vinyl chloride. If, in the last stage, entrained water is not drawn off via the bottom, it is recirculated with the top product to the first stage and causes corrosion. Removal of the water at the top of the third distillation stage, advantageously by drying, prevents the corrosion.
摘要翻译: 在通过1,2-二氯乙烷的热裂解制备氯乙烯时,使用三个蒸馏阶段将第一氯化氢,然后氯乙烯蒸馏出来,最后用氯乙烯夹带氯化氢。 如果在最后阶段,夹带的水不会通过底部排出,则将顶部产品再循环到第一阶段并引起腐蚀。 有利地通过干燥去除第三蒸馏阶段的顶部的水,防止腐蚀。
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公开(公告)号:US07309804B2
公开(公告)日:2007-12-18
申请号:US10280704
申请日:2002-10-25
申请人: Helmut Grumann , Manfred Stoger , Jurgen Eichler , Dieter Jaculi , Winfried Lork , Arend Greve , Jan Wilkens , Peter Kammerhofer , Hermann Tropp
发明人: Helmut Grumann , Manfred Stoger , Jurgen Eichler , Dieter Jaculi , Winfried Lork , Arend Greve , Jan Wilkens , Peter Kammerhofer , Hermann Tropp
IPC分类号: C07C17/02
CPC分类号: C07C17/38 , C07C17/156 , C07C19/045
摘要: A process for the preparation of 1,2-dichloroethane that is very pure with respect to chloral or/and chloral hydrate and carbon dioxide is described herein. The process comprises oxychlorination of ethylene, using hydrogen chloride and an oxygen-containing gas, and alkali treatment of the 1,2-dichloroethane produced. In the process, the carbon dioxide present in the 1,2-dichloroethane-containing organic phase is, in accordance with the invention, substantially separated out from the 1,2-dichloroethane-containing organic phase before the alkali treatment.
摘要翻译: 本文描述了制备相对于氯醛或/和水合氯醛和二氧化碳非常纯的1,2-二氯乙烷的方法。 该方法包括使用氯化氢和含氧气体对乙烯进行氧氯化,并对所生产的1,2-二氯乙烷进行碱处理。 在该方法中,根据本发明,存在于含1,2-二氯乙烷的有机相中的二氧化碳在碱处理之前基本上与含1,2-二氯乙烷的有机相分离。
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