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    • 1. 发明授权
    • Method of producing unsaturated acid from olefin
    • 从烯烃生产不饱和酸的方法
    • US07816559B2
    • 2010-10-19
    • US11378438
    • 2006-03-17
    • Boo Gon WooJun Seok KoKyoung Su HaSeong Pil KangSeok Hwan ChoiYoung Bae Kim
    • Boo Gon WooJun Seok KoKyoung Su HaSeong Pil KangSeok Hwan ChoiYoung Bae Kim
    • C07C51/16
    • B01J8/067B01J2208/00212B01J2208/025C07C51/215C07C51/252C07C57/04
    • Disclosed is a shell-and-tube heat exchanger type reactor that can be used for a process of producing unsaturated acids from olefins via fixed-bed catalytic partial oxidation, which comprises at least one reaction tube, each including at least one first-step catalyst layer, in which olefins are oxidized by a first-step catalyst to mainly produce unsaturated aldehydes, and at least two second-step catalyst layers, in which the unsaturated aldehydes are oxidized by a second-step catalyst to produce unsaturated acids, wherein a first catalyst layer of the second-step catalyst layers, disposed right adjacent to the first-step catalyst layer, has an activity corresponding to 5˜30% of the activity of the catalyst layer having a highest activity among the second-step catalyst layers. A method of producing unsaturated acids from olefins by using the reactor is also disclosed.
    • 公开了一种壳管式热交换器型反应器,其可用于通过固定床催化部分氧化由烯烃生产不饱和酸的方法,其包括至少一个反应管,每个反应管包含至少一个第一步催化剂 层,其中烯烃被第一步催化剂氧化以主要产生不饱和醛,以及至少两个第二步催化剂层,其中不饱和醛被第二步催化剂氧化以产生不饱和酸,其中第一 与第一级催化剂层相邻设置的第二级催化剂层的催化剂层的活性相当于第二级催化剂层中活性最高的催化剂层的活性的5〜30%的活性。 还公开了通过使用反应器由烯烃生产不饱和酸的方法。
    • 2. 发明授权
    • Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system
    • 固定床催化部分氧化反应器生产不饱和酸的方法,采用增强型热控系统
    • US07262324B2
    • 2007-08-28
    • US11019363
    • 2004-12-23
    • Kyoung Su HaGeon Yong KimSeong Pil KangBoo Gon Woo
    • Kyoung Su HaGeon Yong KimSeong Pil KangBoo Gon Woo
    • C07C51/16B01J8/04
    • C07C45/35C07C51/252C07C47/22C07C57/04
    • The present invention provides a process of producing unsaturated acids from unsaturated aldehydes by fixed-bed catalytic partial oxidation in a shell-and-tube heat exchanger-type reactor, as well as a shell-and-tube heat exchanger-type reactor for use in the process. In the invention, second-stage reaction zone of mainly producing unsaturated acids by the catalytic vapor phase oxidation of an unsaturated aldehyde-containing gas mixture produced in a first-stage reaction zone with molecular oxygen is divided into two or more shell spaces by at least one partition. Each of the divided shell spaces is filled with a heat transfer medium, and the heat transfer medium in each shell space is maintained at isothermal temperature or a temperature difference of 0-5° C. Also, in order to protect catalyst layers from a highly exothermic reaction, the process is performed at a limited temperature difference between the temperature at a hot spot and the temperature of the heat transfer medium. Also, in order to facilitate the removal of heat generation at a location where the partition is placed, a reaction inhibition layer is disposed in that location. The improved heat control system for reactors provided according to the present invention can secure the heat stability of the catalyst layer, reduce the amount of byproducts, and increase the yield of a final product.
    • 本发明提供了一种在壳管式热交换器型反应器中通过固定床催化部分氧化由不饱和醛生成不饱和酸的方法,以及用于在管式热交换器型反应器中使用的管壳式热交换器型反应器 的过程。 在本发明中,通过在分子氧的第一阶段反应区中产生的不饱和醛的气体混合物的催化气相氧化主要生成不饱和酸的第二阶段反应区至少分成两个或更多个壳层空间 一个分区。 每个分开的壳体空间填充有传热介质,并且每个壳体空间中的传热介质保持在等温温度或0-5℃的温差。此外,为了保护催化剂层免受高温 放热反应,该过程在热点温度与传热介质的温度之间的有限温度差下进行。 此外,为了便于在隔离物的位置除去发热,在该位置设置反应抑制层。 根据本发明提供的用于反应器的改进的热控制系统可以确保催化剂层的热稳定性,减少副产物的量,并且提高最终产品的产率。
    • 10. 发明申请
    • APPARATUS FOR RECOVERING ACRYLIC ACID
    • 恢复丙烯酸的装置
    • US20100012476A1
    • 2010-01-21
    • US12565359
    • 2009-09-23
    • Seong Pil KANGSeok Kwan ChoiKyoung Su HaJun Seok KoBoo Gon WooYoung Bae Kim
    • Seong Pil KANGSeok Kwan ChoiKyoung Su HaJun Seok KoBoo Gon WooYoung Bae Kim
    • B01D3/10
    • C07C51/44B01J2219/00006C07C51/487C07C57/04
    • Disclosed is a simplified apparatus for recovering acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, in a stable and efficient manner. An apparatus for recovering an acrylic acid from a mixture containing acrylic acid, acrylic acid dimer and impurities with high boiling point, which comprises: an acrylic acid recovering device that comprises an acrylic acid distillation unit being present within an acrylic acid dimer pyrolysis tank, and is operated under reduced pressure; and a line for introducing the mixture into the acrylic acid recovering device, wherein decomposition of the acrylic acid dimer is carried out under reduced pressure at a lower part of the acrylic acid recovering device, while the acrylic acid is recovered by distillation under reduced pressure from a top of the acrylic acid recovering device.
    • 公开了一种用于以稳定且有效的方式从含有丙烯酸,丙烯酸二聚物和高沸点杂质的混合物中回收丙烯酸的简化装置。 一种用于从含有丙烯酸,丙烯酸二聚物和高沸点杂质的混合物中回收丙烯酸的装置,其包括:丙烯酸回收装置,其包含存在于丙烯酸二聚物热解罐内的丙烯酸蒸馏单元,以及 在减压下运行; 以及用于将混合物引入丙烯酸回收装置的管线,其中丙烯酸二聚物的分解在丙烯酸回收装置的下部在减压下进行,同时通过减压蒸馏回收丙烯酸, 丙烯酸回收装置的顶部。