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公开(公告)号：US5908964A
公开(公告)日：1999-06-01
申请号：US803177
申请日：1997-02-19
摘要： The invention concerns a process for preparing a tertiary alkyl ether product. The process comprises reacting the isoolefins of an olefinic hydrocarbon feedstock in a reaction zone (1-3) with an alkanol to form a reaction mixture, which is subjected to distillation in a first distillation zone (4). The bottoms product of the first distillation contains the ether(s), whereas the overhead stream contains unreacted alkanol and a mixture of light hydrocarbons. The overhead stream is subjected to a second distillation in a second distillation zone (15). The overhead product of the second distillation mainly contains the lightest hydrocarbons and a small amount of alkanol, and the bottoms product contains an essentially oxygenate-free hydrocarbon stream which can be used as such for alkylation. In order to increase the conversion of the process, a side drawoff is withdrawn from the second distillation zone (15) and recirculated to the reaction zone (1-3).
摘要翻译： 本发明涉及一种制备叔烷基醚产物的方法。 该方法包括使反应区（1-3）中的烯烃原料的异烯烃与烷醇反应以形成反应混合物，其在第一蒸馏区（4）中进行蒸馏。 第一次蒸馏的塔底产物含有醚，而顶部物流含有未反应的链烷醇和轻烃的混合物。 塔顶流在第二蒸馏区（15）中进行第二次蒸馏。 第二次蒸馏的塔顶产物主要含有最轻的烃和少量的链烷醇，底部产物含有基本上不含氧的烃流，可用于烷基化。 为了增加该方法的转化率，从第二蒸馏区（15）取出侧抽出物并再循环至反应区（1-3）。
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公开(公告)号：US07344632B2
公开(公告)日：2008-03-18
申请号：US10953293
申请日：2004-09-28
申请人： Matti Koskinen , Petri Lindqvist , Harri Jarvelin
发明人： Matti Koskinen , Petri Lindqvist , Harri Jarvelin
CPC分类号： C10G50/00 , C07C41/06 , C07C43/046
摘要： A process for producing alkyl ethers, by etherification of tertiary C4-7 olefins with an alkanol, comprising carrying out the etherification in reactor train system primarily configured for dimerization of isoolefins. In the etherification, the ratio of alkanol-to-olefin is 0.5 to 2, calculated from the amount of tertiary C4-7 olefins of the fresh feedstock. The invention makes it possible to change the product of the process from dimer to ether and vice versa merely by adjusting specific flows within the process. The present kind of process is therefore readily adaptable to fluctuating market demands for various gasoline octane-boosters (isooctane or MTBE).
摘要翻译： 通过叔烷基4-7-烯烃与烷醇醚化制备烷基醚的方法，包括在反应器系统中进行醚化，主要用于异烯烃的二聚。 在醚化中，由新鲜原料的叔C 4-7.7烯烃的量计算，链烷醇与烯烃的比例为0.5至2。 本发明使得可以通过调节该过程中的特定流量将过程的产物从二聚体改变为醚，反之亦然。 因此，目前的这种方法很容易适应各种汽油辛烷值增量剂（异辛烷或MTBE）对市场需求的波动。
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公开(公告)号：US20060065574A1
公开(公告)日：2006-03-30
申请号：US10953293
申请日：2004-09-28
申请人： Matti Koskinen , Petri Lindqvist , Harri Jarvelin
发明人： Matti Koskinen , Petri Lindqvist , Harri Jarvelin
IPC分类号： C10G65/02
CPC分类号： C10G50/00 , C07C41/06 , C07C43/046
摘要： A process for producing alkyl ethers, by etherification of tertiary C4-7 olefins with an alkanol, comprising carrying out the etherification in reactor train system primarily configured for dimerization of isoolefins. In the etherification, the ratio of alkanol-to-olefin is 0.5 to 2, calculated from the amount of tertiary C4-7 olefins of the fresh feedstock. The invention makes it possible to change the product of the process from dimer to ether and vice versa merely by adjusting specific flows within the process. The present kind of process is therefore readily adaptable to fluctuating market demands for various gasoline octane-boosters (isooctane or MTBE).
摘要翻译： 通过叔烷基4-7-烯烃与烷醇醚化制备烷基醚的方法，包括在反应器系统中进行醚化，主要用于异烯烃的二聚。 在醚化中，由新鲜原料的叔C 4-7.7烯烃的量计算，链烷醇与烯烃的比例为0.5至2。 本发明使得可以通过调节该过程中的特定流量将过程的产物从二聚体改变为醚，反之亦然。 因此，目前的这种方法很容易适应各种汽油辛烷值增量剂（异辛烷或MTBE）对市场需求的波动。
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4.发明授权
公开(公告)号：US5689013A
公开(公告)日：1997-11-18
申请号：US527319
申请日：1995-09-12
申请人： Harri Jarvelin , Petri Lindqvist , Juha Jakkula
发明人： Harri Jarvelin , Petri Lindqvist , Juha Jakkula
CPC分类号： C07C41/42 , B01D3/009 , C07C41/06 , Y02P20/127
摘要： The present invention concerns a process for preparing tertiary alkyl ethers. The process comprises the steps of contacting in the presence of a catalyst a feedstock containing saturated hydrocarbons and dienes having 4 to 7 carbon atoms with an excess of hydrogen in relation to the amount of dienes in the feed in order selectively to hydrogenate at least a part of the dienes, feeding the treated hydrocarbon feedstock together with at least a part of the unreacted hydrogen to a catalytic distillation reactor system which includes at least one distillation column, reacting the C.sub.4-7 isoolefines of the feedstock with methanol or ethanol in the presence of a catalyst to form tertiary alkyl ethers, subjecting the reaction mixture to distillation in the distillation column, recovering the alkyl ethers and substantially all of the unreacted hydrocarbons with the bottoms product of the distillation, withdrawing an overhead product of the distillation, which mainly contains an azeotrope of saturated C.sub.4 hydrocarbons and the alkanol, and maintaining the pressure of the distillation column at least essentially constant by adjusting the amount of gaseous distillate containing hydrogen in the column. The selective hydrogenation operation of the present invention reduces the amount of dienes contained in the feed to below 0.5% and also causes isomerization of olefins to increase the amounts of reactive olefins.
摘要翻译： 本发明涉及一种制备叔烷基醚的方法。 该方法包括以下步骤：在催化剂存在下使含有饱和烃和具有4至7个碳原子的二烯的原料与过量的氢相对于进料中的二烯的量相接触，以选择性地氢化至少一部分 将经处理的烃原料与至少一部分未反应的氢一起进料至包含至少一个蒸馏塔的催化蒸馏反应器系统中，使原料的C4-7异烯烃与甲醇或乙醇在存在下反应， 用于形成叔烷基醚的催化剂，使反应混合物在蒸馏塔中进行蒸馏，用蒸馏塔底产物回收烷基醚和基本上所有未反应的烃，取出主要含有 饱和C4烃和链烷醇的共沸物，并保持dis的压力 通过调节柱中含有氢的气态馏出物的量，蒸馏塔至少基本上恒定。 本发明的选择性氢化操作将进料中所含的二烯烃的量减少到低于0.5％，并且还引起烯烃的异构化以增加反应性烯烃的量。
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公开(公告)号：US5852220A
公开(公告)日：1998-12-22
申请号：US771417
申请日：1996-12-20
申请人： Harri Jarvelin , Petri Lindqvist , Esa Tamminen
发明人： Harri Jarvelin , Petri Lindqvist , Esa Tamminen
CPC分类号： C07C41/06
摘要： A process for producing tertiary alkyl ethers by reacting an olefinic hydrocarbon feedstock, which contains a mixture of reactive C.sub.4 -C.sub.7 isoolefins, with an alkanol in the presence of a catalyst that will enhance the reaction between the isoolefins and the alkanol. By adjusting the weight ratio of the isobutylene to the reactive C.sub.6 isoolefins of the feed to a value of about 0.2 to 10, it is possible to increase the conversion of reactive C.sub.4 's to over 95%, of reactive C.sub.5 's to over 85% and of reactive C.sub.6 's to over 57%.
摘要翻译： 在催化剂存在下，使含有活性C4-C7异烯烃的混合物的烯烃原料与烷醇反应生成叔烷基醚的方法，该催化剂将增强异烯烃和链烷醇之间的反应。 通过将异丁烯与进料的活性C 6异烯烃的重量比调节至约0.2至10的值，可以将反应性C4的转化率增加至超过95％，反应性C5的转化率超过85％，反应性 C6超过57％。
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