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    DIVIDED WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY ACRYLIC ACID AND FRACTIONAL DISTILLATION METHOD USING THE SAME
    21.
    发明申请
    DIVIDED WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY ACRYLIC ACID AND FRACTIONAL DISTILLATION METHOD USING THE SAME 有权
    用于生产高纯度丙烯酸和分级蒸馏方法的分离壁分离塔

    公开(公告)号：US20140371488A1

    公开(公告)日：2014-12-18

    申请号：US14472212

    申请日：2014-08-28

    Applicant: LG CHEM, LTD.

    Inventor： Sung Kyu LEE ,  Jong Ku LEE ,  Joon Ho SHIN

    IPC: B01D3/14 ,  C07C51/44

    CPC classification number: B01D3/14 ,  B01D3/141 ,  C07C51/44 ,  C07C51/445 ,  C07C57/04

    Abstract: There are provided a dividing wall distillation column for producing high-purity acrylic acid, and a fractional distillation method using the same. The dividing wall distillation column includes a condenser, a reboiler and a main column having a dividing wall. Here, the main column is divided into a column-top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a column-bottom zone. Also, a crude acrylic acid raw material (F) flows in a middle inflow plate NR1 in which the upper feed zone and the lower teed zone come in contact with each other, a low boiling point component (I)) flows out from the column-top zone, a high boiling point component (B) flows out from the column-bottom zone, and a middle boiling point component (S) flows out through a middle outflow plate NR2 in which the upper outflow zone and the lower outflow zone come in contact with each other. In this case, the middle boiling point component is acrylic acid. Accordingly. since one distillation column can be used to realize the same effect as that obtained from the use of two distillation columns, the dividing wall distillation column can have an effect of reducing the costs of equipment to produce high-purity acrylic acid, as well as an energy-reducing effect, compared to a conventional process system.

    Abstract translation: 提供了用于生产高纯度丙烯酸的分隔壁蒸馏塔和使用其的分馏方法。 分隔壁蒸馏塔包括冷凝器，再沸器和具有分隔壁的主塔。 这里，主塔分为塔顶区，上进料区，上流出区，下进料区，下流出区和塔底区。 此外，粗丙烯酸原料（F）在上进料区和下进料区彼此接触的中流入板NR1中流动，低沸点组分（I））从塔流出 - 顶部区域，高沸点成分（B）从塔底区域流出，中间沸点成分（S）通过中流出板NR2流出，其中上流出区域和下流出区域出现 彼此接触。 在这种情况下，中间沸点成分是丙烯酸。 因此。 由于可以使用一个蒸馏塔来实现与使用两个蒸馏塔相同的效果，所以分隔壁蒸馏塔可以具有降低设备生产高纯度丙烯酸的成本的效果，以及 与常规工艺系统相比，减少能量效应。

    METHOD FOR PRODUCING BUTADIENE THROUGH OXIDATIVE DEHYDROGENATION REACTION
    24.
    发明申请
    METHOD FOR PRODUCING BUTADIENE THROUGH OXIDATIVE DEHYDROGENATION REACTION 审中-公开
    通过氧化脱氢反应生产丁二烯的方法

    公开(公告)号：US20160326071A1

    公开(公告)日：2016-11-10

    申请号：US15110666

    申请日：2015-06-09

    Applicant: LG CHEM, LTD.

    Inventor： Mi Kyung KIM ,  Jeong Seok LEE ,  Jae Ik LEE ,  Dae Hyeon KIM ,  Jong Ku LEE

    IPC: C07C7/11 ,  C07C5/48

    CPC classification number: C07C7/11 ,  C07C5/48 ,  C07C2523/18 ,  C07C2523/28 ,  C07C2523/31 ,  C07C11/167

    Abstract: The present invention relates to a method for producing butadiene through an oxidative dehydrogenation reaction, the method including steps of a) introducing a first stream which includes C4 fraction, steam, oxygen (O2), and nitrogen (N2) into a reactor which is filled with catalyst to perform oxidative dehydrogenation reaction; b) selectively absorbing butadiene, which is obtained from the reactor, into an absorption solvent, and separating and removing C4 mixture other than the dutadiene and light gas product; and c) recovering and purifying the butadiene. Through integration of the gas separating and purifying steps by using the single absorption solvent during production of butadiene, equipment costs and operating costs accruing from repeated introduction and removal of solvent are reduced, thereby ensuring economic competitiveness of the process.

    Abstract translation: 本发明涉及通过氧化脱氢反应生产丁二烯的方法，该方法包括以下步骤：a）将包含C4馏分，蒸汽，氧气（O 2）和氮气（N 2）的第一流引入填充的反应器中 用催化剂进行氧化脱氢反应; b）选择性地将从反应器获得的丁二烯吸收到吸收溶剂中，以及除去二丁二烯和轻质气体产物之外的C4混合物; 和c）回收和纯化丁二烯。 通过在丁二烯生产过程中通过使用单一吸收溶剂来整合气体分离和纯化步骤，降低了反复引入和除去溶剂所产生的设备成本和运行成本，从而确保了该方法的经济竞争力。

    METHOD OF RECYCLING ENERGY IN PROCESS OF BUTADIENE PREPARATION (As Amended)
    25.
    发明申请
    METHOD OF RECYCLING ENERGY IN PROCESS OF BUTADIENE PREPARATION (As Amended) 审中-公开
    二苯乙烯制备方法回收能量的方法（经修改）

    公开(公告)号：US20160319704A1

    公开(公告)日：2016-11-03

    申请号：US15108519

    申请日：2015-07-02

    Applicant: LG CHEM, LTD.

    Inventor： Mi Kyung KIM ,  Jeong Seok LEE ,  Jae Ik LEE ,  Dae Hyeon KIM ,  Jong Ku LEE

    IPC: F01K25/14 ,  F01D25/08 ,  F01D15/10 ,  C07C5/48 ,  F01K7/16

    CPC classification number: F01K25/14 ,  C07C5/48 ,  C07C7/00 ,  C07C7/04 ,  F01D15/10 ,  F01D25/08 ,  F01K5/00 ,  F01K7/16 ,  F05D2260/213 ,  H02N11/00

    Abstract: Provided is a method for recycling energy in process of butadiene preparation, which includes, in the process of preparing butadiene using oxidative dehydrogenation reaction, steps of: a) supplying part or all of a light gas discharged from a solvent absorption tower to a turbine to produce electricity; b) passing the light gas passed through the turbine through one or more device units provided with a heat exchanger; and c) feeding the light gas passed through the device units provided with the heat exchanger into a reactor, according to which more economical butadiene preparation process is provided, by reducing net energy value required in process of butadiene preparation using oxidative dehydrogenation reaction.

    Abstract translation: 提供了一种在丁二烯制备过程中回收能量的方法，其包括在使用氧化脱氢反应制备丁二烯的过程中，步骤：a）将从溶剂吸收塔排出的轻质气体的一部分或全部供应到涡轮机 发电; b）使通过涡轮机的轻质气体通过设置有热交换器的一个或多个装置单元; 以及c）将通过设置有热交换器的装置单元的轻质气体进料到反应器中，通过减少使用氧化脱氢反应的丁二烯制备过程中所需的净能值，从而提供更经济的丁二烯制备方法。

    DISTILLATION APPARATUS
    27.
    发明申请
    DISTILLATION APPARATUS 有权
    蒸馏装置

    公开(公告)号：US20160193541A1

    公开(公告)日：2016-07-07

    申请号：US14905618

    申请日：2014-07-18

    Applicant: LG CHEM, LTD.

    Inventor： Sung Kyu LEE ,  Joon Ho SHIN ,  Sung Kyun KIM ,  Jong Ku LEE

    IPC: B01D3/14 ,  C07C67/54

    CPC classification number: B01D3/141 ,  B01D3/008 ,  B01D3/14 ,  B01D3/143 ,  B01D3/32 ,  C07C41/42 ,  C07C67/54 ,  C07C69/54

    Abstract: The present application relates to a distillation apparatus and a separation method, and according to the distillation apparatus and the separation method of the present application, it is possible to separate a material to be separated during the separation of a mixture of three or more components, for example, 2-ethylhexyl acrylate with high purity, and to achieve an object of saving energy during the separation and purification process of 2-ethylhexyl acrylate.

    Abstract translation: 本申请涉及蒸馏装置和分离方法，并且根据本申请的蒸馏装置和分离方法，可以在三种或更多种组分的混合物分离期间分离待分离的材料， 例如具有高纯度的丙烯酸2-乙基己酯，并且在丙烯酸2-乙基己酯的分离和纯化过程中达到节能的目的。

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