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1. 发明申请

WO2004072055A1 PROCESS FOR MANUFACTURING ETHYLENE OXIDE 审中-公开
标题翻译：制造乙烯氧化物的方法
公开(公告)号：WO2004072055A1
公开(公告)日：2004-08-26
申请号：PCT/GB2004/000188
申请日：2004-01-21
申请人： BP CHEMICALS LIMITED , BP CORPORATION NORTH AMERICA INC. , POULAIN, Christine , RGHIOUI, Mehdi , TAHERI, Hassan
发明人： POULAIN, Christine , RGHIOUI, Mehdi , TAHERI, Hassan
IPC分类号： C07D301/10
CPC分类号： B01J8/067 , B01J23/50 , B01J2208/00212 , B01J2208/00513 , C07D301/10 , Y02P20/52
摘要： The invention relates to a process for manufacturing ethylene oxide by the catalytic oxidation reaction of ethylene with molecular oxygen. The process comprises contacting a reactive gas mixture current comprising ethylene and molecular oxygen with a silver-based catalyst in the form of particles arranged as a fixed bed in reaction tubes combined as a bundle in a tube reactor. The process is characterized in that the reactive gas mixture current flowing through the reaction tubes is contacted with the catalyst particles diluted with particles of an inert solid in a proportion increasing in the flow direction of said current. Preferably, the dilution of the catalyst particles with those of the inert solid is performed over a portion of the catalyst particles arranged in a zone of the reaction tubes located towards the outlet of said tubes and more particularly extending up to the outlet of said tubes, in the flow direction of the reactive gas mixture current. The main objective of the invention is the improvement of the safety of the process as regards the explosion risks by deviating the reaction temperature in particular at the outlet of the reaction tubes from the flammability zone of the gas current.
摘要翻译：本发明涉及通过乙烯与分子氧的催化氧化反应制备环氧乙烷的方法。该方法包括将包含乙烯和分子氧的反应气体混合物电流与作为固定床布置的颗粒形式的银基催化剂接触，所述反应管电流在管式反应器中作为束组合。该方法的特征在于，流过反应管的反应气体混合物电流与以所述电流的流动方向增加的比例与惰性固体颗粒稀释的催化剂颗粒接触。优选地，催化剂颗粒与惰性固体的稀释度在布置在位于所述管的出口的反应管的区域中的一部分催化剂颗粒上进行，更特别地延伸到所述管的出口，在反应气体混合物流的流动方向。本发明的主要目的是通过使反应管出口处的反应温度与气流的可燃性区域相差来改善爆炸危险的过程的安全性。

2. 发明申请

WO2004056463A1 PROCESS FOR MANUFACTURING ETHYLENE OXIDE 审中-公开
标题翻译：制造乙烯氧化物的方法
公开(公告)号：WO2004056463A1
公开(公告)日：2004-07-08
申请号：PCT/GB2003/005203
申请日：2003-12-03
申请人： BP CHEMICALS LIMITED , BP CORPORATION NORTH AMERICA INC. , MAUVEZIN, Mathias , POULAIN, Christine , RGHIOUI, Mehdi , TAHERI, Hassan
发明人： MAUVEZIN, Mathias , POULAIN, Christine , RGHIOUI, Mehdi , TAHERI, Hassan
IPC分类号： B01J8/06
CPC分类号： F28F13/08 , B01J8/008 , B01J8/067 , B01J2208/00212 , F28D7/16
摘要： The present invention relates to a process for manufacturing ethylene oxide by the catalytic oxidation reaction of ethylene by molecular oxygen in a tube reactor. The reactor comprises a bundle of reaction tubes (5) which are immersed in a heat exchange fluid and filled with a solid silver-based catalyst (8) and which are traversed by a reactive gas current containing ethylene and molecular oxygen, which in contact with the catalyst forms the ethylene oxide. The area of the internal cross-section of the reaction tubes (5) decreases between the inlet (1) and the outlet (3) of the tubes over at least a portion of the length of the tubes and remains constant over any remaining portion. The process makes it possible to increase the selectivity of the reaction to ethylene oxide for a given production of ethylene oxide. It also makes it possible to use a maximum charge of active catalyst per unit of internal tube volume available in the reactor, owing in particular to an optimum heat exchange capable more particularly of supplying a relatively stable reaction temperature profile over the whole length of the reaction tubes and preventing in particular reaction runaways.
摘要翻译：本发明涉及通过在管式反应器中通过分子氧的乙烯的催化氧化反应来制造环氧乙烷的方法。反应器包括一束反应管（5），其被浸入热交换流体中并填充有固体银基催化剂（8），并且其被包含乙烯和分子氧的反应气流横穿，所述反应气流与催化剂形成环氧乙烷。反应管（5）的内部横截面的面积在管的入口（1）和出口（3）之间在管的长度的至少一部分上减小，并且在任何剩余部分上保持恒定。该方法使得可以在给定的环氧乙烷生产环境中提高反应对环氧乙烷的选择性。它还使得可以在反应器中使用每单位内管体积的最大电荷的活性催化剂，这尤其是最佳的热交换能力，特别是在反应的整个长度上提供相对稳定的反应温度分布并防止特别是反应逃逸。

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