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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。
    • 3. 发明授权
    • Method for producing (meth) acrylic acid
    • (甲基)丙烯酸的制造方法
    • US07632968B2
    • 2009-12-15
    • US11192223
    • 2005-07-28
    • Seong Pil KangSeok Hwan ChoiKyoung Su HaJun Seok KoYoung Bae KimBoo Gon WooMin Jeong Park
    • Seong Pil KangSeok Hwan ChoiKyoung Su HaJun Seok KoYoung Bae KimBoo Gon WooMin Jeong Park
    • C07C51/42
    • C07C51/44C07C51/48C07C57/04
    • Disclosed is a method for producing (meth)acrylic acid comprising a process of recovering (meth)acrylic acid as aqueous (meth)acrylic acid solution from a (meth)acrylic acid-containing gas mixture produced by the catalytic gas phase oxidation of at least one reactant selected from the group consisting of propane, propylene, isobutylene and (meth)acrolein, wherein the recovering process comprises the steps of: (1) feeding the (meth)acrylic acid-containing gas mixture into a quenching tower and condensing it in the quenching tower so as to recover an aqueous (meth)acrylic acid solution from the bottom of the quenching tower, in which some of the recovered aqueous (meth)acrylic acid solution is recycled to the upper portion of the quenching tower so as to condense the (meth)acrylic acid-containing gas mixture; (2) passing the uncondensed part of the (meth)acrylic acid-containing gas mixture from the top of the quenching tower to a distillation tower; and (3) heating the bottom of the distillation tower to separate water-containing impurity components from the uncondensed (meth)acrylic acid-containing gas mixture and to discharge them from the top of the distillation tower. A system used for carrying out the method is also disclosed.
    • 公开了一种制备(甲基)丙烯酸的方法,包括从(甲基)丙烯酸水溶液中回收(甲基)丙烯酸作为(甲基)丙烯酸水溶液的方法,所述方法至少由 一种选自丙烷,丙烯,异丁烯和(甲基)丙烯醛的反应物,其中回收方法包括以下步骤:(1)将含(甲基)丙烯酸的气体混合物进料到淬火塔中并将其冷凝 淬火塔,以从骤冷塔的底部回收(甲基)丙烯酸水溶液,其中一些回收的(甲基)丙烯酸水溶液被循环到淬火塔的上部以冷凝 (甲基)丙烯酸气体混合物; (2)使来自(甲基)丙烯酸的气体混合物的未冷凝的部分从淬火塔的顶部通到蒸馏塔; 和(3)加热蒸馏塔的底部以将含水的杂质组分与未冷凝(甲基)丙烯酸的气体混合物分离并从蒸馏塔的顶部排出。 还公开了用于执行该方法的系统。
    • 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。