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公开(公告)号：US08466302B1
公开(公告)日：2013-06-18
申请号：US13332741
申请日：2011-12-21
IPC分类号： C07D301/14
CPC分类号： C07D303/04 , Y02P20/127 , Y02P20/582
摘要： A continuous epoxidation process for the production of high purity propylene oxide by the reaction of propylene with an oxidant that is a per-acid, such as peracetic acid (PAA), in a reactive distillation (RD) column. The RD column provides excellent heat integration and temperature control, and the process has the advantage of lower investment cost for capital equipment. The process operates at mild temperatures and pressures. A ferric acetylacetonate homogeneous catalyst and/or stabilizer may be included as part of the PAA feed to the process to increase PAA conversion and selectivity to propylene oxide. A pre-reactor can be incorporated upstream of the RD column to increase the residence time at lower temperatures to enhance productivity.
摘要翻译： 在反应蒸馏（RD）柱中通过丙烯与过酸例如过乙酸（PAA）的氧化剂反应生产高纯度环氧丙烷的连续环氧化方法。 RD列提供优异的热集成和温度控制，该工艺具有降低资本设备投资成本的优点。 该过程在温和的温度和压力下运行。 乙酰丙酮铁的均匀催化剂和/或稳定剂可以作为PAA进料的一部分包含在该方法中以增加PAA转化率和对环氧丙烷的选择性。 可以在RD塔的上游引入预反应器以增加在较低温度下的停留时间，以提高生产率。
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公开(公告)号：US09227899B2
公开(公告)日：2016-01-05
申请号：US13987699
申请日：2013-08-22
CPC分类号： C07C41/44 , C07C41/03 , C07C41/42 , Y02P20/127 , C07C43/13
摘要： Propylene glycol methyl ether is produced by feeding a solution of a basic catalyst in methanol to a catalytic distillation column containing a heterogeneous basic catalyst defining a heterogeneous reaction zone, and feeding propylene oxide to the column. The methanol reacts with the propylene oxide according to a dual homogeneous catalytic reaction and heterogeneous catalytic reaction to form propylene glycol methyl ether, which is removed from the column as a bottoms product. Alternatively, methanol can be reacted with propylene oxide in a pre-reactor, to form propylene glycol methyl ether, and, when the temperature in the pre-reactor reaches about 100° C., the reaction products are transferred to the catalytic distillation column for further reaction.
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公开(公告)号：US20150057468A1
公开(公告)日：2015-02-26
申请号：US13987699
申请日：2013-08-22
IPC分类号： C07C41/44
CPC分类号： C07C41/44 , C07C41/03 , C07C41/42 , Y02P20/127 , C07C43/13
摘要： Propylene glycol methyl ether is produced by feeding a solution of a basic catalyst in methanol to a catalytic distillation column containing a heterogeneous basic catalyst defining a heterogeneous reaction zone, and feeding propylene oxide to the column. The methanol reacts with the propylene oxide according to a dual homogeneous catalytic reaction and heterogeneous catalytic reaction to form propylene glycol methyl ether, which is removed from the column as a bottoms product. Alternatively, methanol can be reacted with propylene oxide in a pre-reactor, to form propylene glycol methyl ether, and, when the temperature in the pre-reactor reaches about 100° C., the reaction products are transferred to the catalytic distillation column for further reaction.
摘要翻译： 通过将碱性催化剂在甲醇中的溶液进料到含有限定非均相反应区的非均相碱性催化剂的催化蒸馏塔中并将环氧丙烷加入到塔中来制备丙二醇甲基醚。 甲醇根据双重均相催化反应和多相催化反应与环氧丙烷反应形成丙二醇甲醚，其作为塔底产物从柱中除去。 或者，甲醇可以在预反应器中与环氧丙烷反应，形成丙二醇甲基醚，并且当预反应器中的温度达到约100℃时，将反应产物转移到催化蒸馏塔 进一步反应。
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公开(公告)号：US20130165676A1
公开(公告)日：2013-06-27
申请号：US13332741
申请日：2011-12-21
IPC分类号： C07D301/14
CPC分类号： C07D303/04 , Y02P20/127 , Y02P20/582
摘要： A continuous epoxidation process for the production of high purity propylene oxide by the reaction of propylene with an oxidant that is a per-acid, such as peracetic acid (PAA), in a reactive distillation (RD) column. The RD column provides excellent heat integration and temperature control, and the process has the advantage of lower investment cost for capital equipment. The process operates at mild temperatures and pressures. A ferric acetylacetonate homogeneous catalyst and/or stabilizer may be included as part of the PAA feed to the process to increase PAA conversion and selectivity to propylene oxide. A pre-reactor can be incorporated upsteam of the RD column to increase the residence time at lower temperatures to enhance productivity.
摘要翻译： 在反应蒸馏（RD）柱中通过丙烯与过酸例如过乙酸（PAA）的氧化剂反应生产高纯度环氧丙烷的连续环氧化方法。 RD列提供优异的热集成和温度控制，该工艺具有降低资本设备投资成本的优点。 该过程在温和的温度和压力下运行。 乙酰丙酮铁的均匀催化剂和/或稳定剂可以作为PAA进料的一部分被包括以提高PAA转化率和对环氧丙烷的选择性。 可以将预反应器并入RD塔的上游，以增加在较低温度下的停留时间，以提高生产率。
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