公开(公告)号：US20160289145A1

公开(公告)日：2016-10-06

申请号：US15034815

申请日：2015-05-15

Applicant: LG CHEM, LTD.

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

IPC: C07C5/48 ,  C07C7/04 ,  C07C7/00

CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/04 ,  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 production method according to the present invention may easily regulate an input ratio between oxygen and nitrogen that are used as raw material, such that a loss may be minimized of butadiene that is included in a second fraction stream (purge stream) and discharged to outside of the system. Consequently, an economic competitiveness of the process, such as a reduced raw material cost and an improved productivity may be realized.

Abstract translation: 本发明涉及通过氧化脱氢反应生产丁二烯的方法。 根据本发明的制造方法可以容易地调节用作原料的氧和氮之间的输入比例，使得包含在第二级分流（净化流）中并排放到外部的丁二烯的损失可能最小化 的系统。 因此，可以实现过程的经济竞争力，例如降低的原材料成本和提高的生产率。

公开(公告)号：US20190152878A1

公开(公告)日：2019-05-23

申请号：US16250811

申请日：2019-01-17

Applicant: LG CHEM, LTD.

Inventor： Dae Hyeon KIM ,  Soo Hwan HWANG ,  Jong Ku LEE ,  Jeong Seok LEE

IPC: C07C5/25 ,  B01D3/00 ,  C07C7/04

Abstract: Provided are a separation system for easily recovering normal butene from an olefin fraction including isobutene, isobutane, 1-butene, 2-butene, and normal butane, and a separation process system using the method. Since the separation system may easily convert 1-butene included in the olefin fraction to 2-butene, normal butene may be effectively separated and recovered by factional distillation and each recovered fraction may be easily refluxed even if the use of a reflux system using a refrigerant is reduced or excluded. Thus, economic efficiency may be improved and simultaneously, separation efficiency may be increased.

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。

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。

公开(公告)号：US20170166497A1

公开(公告)日：2017-06-15

申请号：US15325329

申请日：2016-04-28

Applicant: LG CHEM, LTD.

Inventor： Dae Hyeon KIM ,  Soo Hwan HWANG ,  Jong Ku LEE ,  Jeong Seok LEE

IPC: C07C5/25 ,  B01D3/00 ,  C07C7/04

CPC classification number: C07C5/2556 ,  B01D3/007 ,  B01D3/009 ,  C07C7/04 ,  Y02P30/48

Abstract: Provided are a separation method for easily recovering normal butene from an olefin fraction including isobutene, isobutane, 1-butene, 2-butene, and normal butane, and a separation process system using the method. Since the separation method according to the present invention may easily convert 1-butene included in the olefin fraction to 2-butene, normal butene may be effectively separated and recovered by factional distillation and each recovered fraction may be easily refluxed even if the use of a reflux system using a refrigerant is reduced or excluded. Thus, economic efficiency may be improved and simultaneously, separation efficiency may be increased.

公开(公告)号：US20160256815A1

公开(公告)日：2016-09-08

申请号：US14426919

申请日：2014-11-21

Applicant: LG CHEM, LTD.

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

IPC: B01D53/14 ,  C07C7/11

CPC classification number: B01D53/1425 ,  B01D11/0488 ,  B01D53/1418 ,  B01D53/1487 ,  B01D53/1493 ,  B01D2252/20405 ,  B01D2252/20431 ,  B01D2257/7022 ,  C07C5/32 ,  C07C5/48 ,  C07C7/11 ,  C07C11/167

Abstract: The present invention relates to a method of recovering an absorption solvent in a butadiene production process through oxidative dehydrogenation, the method including: a) transferring a light gas discharged from an upper portion of an absorption tower to a wash column; and b) recovering the absorption solvent included in the light gas by a solvent circulating in the wash column. Since an absorption solvent may be prevented from being introduced into a reactor, or being discharged to an outside of a system, economic efficiency of a butadiene production process is improved.

Abstract translation: 本发明涉及通过氧化脱氢在丁二烯生产过程中回收吸收溶剂的方法，该方法包括：a）将从吸收塔上部排出的轻质气体转移到洗涤塔; 和b）通过在洗涤塔中循环的溶剂回收包括在轻质气体中的吸收溶剂。 由于可以防止吸收溶剂被引入反应器中或被排放到系统的外部，所以丁二烯生产过程的经济效率提高。