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公开(公告)号：EP3380460A1
公开(公告)日：2018-10-03
申请号：EP16791560.2
申请日：2016-11-01
发明人： BRENDEL, Marc , BÄRZ, Manfred , KOWOLL, Johannes , BOLZ, David , HOFEN, Willi , SCHEMEL, Jürgen , JAEGER, Bernd , BREDEMEYER, Niels , KOLBE, Bärbel , ULLRICH, Norbert , DOPFER, Michael , WÖLL, Wolfgang , PORSCHA, Peter , PFENNING, Dana , BERNHARD, Maik
IPC分类号： C07D301/12 , C07D303/04
CPC分类号： C07D301/12 , C07D303/04
摘要： Propene is continuously reacted with hydrogen peroxide in a tube bundle reactor comprising a multitude of parallel reaction tubes in the presence of a titanium silicalite catalyst arranged as a fixed bed in the reaction tubes. A cooling jacket encloses the reaction tubes, which has a feed point for cooling medium near the entry of the reaction tubes,a withdrawal point for cooling medium near the end of the reaction tubes and at least one additional withdrawal point upstream of the withdrawal point near the end of the reaction tubes. Cooling medium is fed to the feed point for cooling medium, a part of the cooling medium is withdrawn at the at least one additional withdrawal point and the remainder exits at the withdrawal point near the end of the reaction tubes.
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公开(公告)号：EP3246323A1
公开(公告)日：2017-11-22
申请号：EP16169840.2
申请日：2016-05-17
IPC分类号： C07D301/12
CPC分类号： C07D301/12 , Y02P20/125
摘要： The integrated process comprises a step a) of dehydrogenating propane providing a stream S1 comprising propane and propene; a step b) of separating stream S1 in at least one rectification column, providing an overhead product stream S2 comprising more than 99 % by weight propene, a side stream S3 comprising from 90 to 98 % by weight propene and a bottoms product stream S4 enriched in propane; a step c) of reacting propene with hydrogen peroxide in the presence of an epoxidation catalyst using propene in molar excess; and a step d) of separating non-reacted propene and propene oxide from the reaction mixture of step c) providing a propene oxide product and a stream S5 comprising propene and propane; wherein stream S3 is passed to step c), stream S5 is recycled to step b) and stream S4 is recycled to step a).
摘要翻译： 该整合方法包括丙烷脱氢步骤a），提供包含丙烷和丙烯的物流S1; 在至少一个精馏塔中分离物流S1的步骤b），提供包含大于99重量％丙烯的塔顶产物物流S2，包含90-98重量％丙烯的侧物流S3和富集的底部产物物流S4 在丙烷中; 在环氧化催化剂存在下使用摩尔过量的丙烯使丙烯与过氧化氢反应的步骤c）; 和从步骤c）的反应混合物中分离未反应的丙烯和氧化丙烯以提供氧化丙烯产物和包含丙烯和丙烷的料流S5的步骤d） 其中流S3进入步骤c），流S5再循环至步骤b），并且流S4循环至步骤a）。
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公开(公告)号：EP4063355A1
公开(公告)日：2022-09-28
申请号：EP21163952.1
申请日：2021-03-22
发明人： BOLZ, David , WIEDERHOLD, Holger
IPC分类号： C07D301/12 , C07C5/32 , C07C15/46 , B01J19/00
摘要： An integrated process for making styrene and propene oxide which comprises the steps:
a) dehydrogenating ethylbenzene in the presence of a dehydrogenation catalyst;
b) separating styrene and hydrogen from the reaction mixture of step a);
c) producing hydrogen peroxide from hydrogen separated in step b) and oxygen;
d) reacting propene with the hydrogen peroxide obtained in step c) in the presence of an epoxidation catalyst to provide a reaction mixture comprising propene oxide; and
e) separating propene oxide from the reaction mixture obtained in step d).-
公开(公告)号：EP3380448B1
公开(公告)日：2019-08-28
申请号：EP16794962.7
申请日：2016-11-01
申请人： Evonik Degussa GmbH
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公开(公告)号：EP3380448A1
公开(公告)日：2018-10-03
申请号：EP16794962.7
申请日：2016-11-01
申请人： Evonik Degussa GmbH
发明人： WIEDERHOLD, Holger , BOLZ, David , JAEGER, Bernd , KÖHLE, Hans-Jürgen , IMM, Sebastian , THIELE, Georg Friedrich
CPC分类号： C07C29/48 , C07C29/106 , C07C29/76 , C07C31/205
摘要： The invention relates to a method for producing propylene glycol from propene and hydrogen peroxide, comprising the following steps: a) reacting propene with hydrogen peroxide in the presence of a catalyst mixture comprising a phase transfer catalyst and a heteropolytungstate, wherein the reaction is carried out in a fluid mixture comprising an aqueous phase with a maximum pH of (6) and an organic phase; b) dividing the two-phase mixture from step a) into an aqueous phase and an organic phase containing propylene oxide; c) returning the propylene oxide contained in the separated organic phase into the reaction from step a); and d) separating propylene glycol from the aqueous phase separated in step b).
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