公开(公告)号：US09925525B2

公开(公告)日：2018-03-27

申请号：US14427207

申请日：2014-11-18

Applicant: LG CHEM, LTD.

Inventor： Dae Heung Choi ,  Dong Hyun Ko ,  Jun Han Kang ,  Kyong Yong Cha ,  Dae Chul Kim ,  Joo Hyuck Lee ,  Hyun Seok Nam ,  Myung Ji Suh ,  Ye Seul Hwang ,  Jun Kyu Han ,  Sang Jin Han

IPC: B01J23/887 ,  C07C5/48 ,  B01J37/02 ,  B01J29/04 ,  B01J35/02 ,  B01J23/31 ,  B01J23/00 ,  B01J29/076 ,  B01J29/26 ,  B01J29/48 ,  B01J29/78

CPC classification number: B01J23/8876 ,  B01J23/002 ,  B01J23/31 ,  B01J29/04 ,  B01J29/076 ,  B01J29/26 ,  B01J29/48 ,  B01J29/7807 ,  B01J29/7815 ,  B01J35/026 ,  B01J37/0221 ,  B01J37/0236 ,  B01J37/0246 ,  B01J2229/64 ,  B01J2523/00 ,  C07C5/48 ,  C07C2523/04 ,  C07C2523/28 ,  C07C2523/31 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/15 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

Abstract: The present invention relates to a bismuth molybdate-based composite oxide catalyst having a microporous zeolite coating layer on the surface thereof and thus having high selectivity for 1,3-butadiene, a method of preparing the same, and a method of preparing 1,3-butadiene using the same. The catalyst has a microporous zeolite coating layer, and thus enables only gaseous products (light) to selectively pass through the zeolite coating layer, improving selectivity for 1,3-butadiene.

公开(公告)号：US09751819B2

公开(公告)日：2017-09-05

申请号：US15035430

申请日：2015-11-25

Applicant: LG CHEM, LTD.

Inventor： Dae Heung Choi ,  Dong Hyun Ko ,  Myung Ji Suh ,  Kyong Yong Cha ,  Ye Seul Hwang ,  Jun Han Kang ,  Hyun Seok Nam ,  Joo Hyuck Lee ,  Sang Jin Han ,  Jun Kyu Han

IPC: C07C5/327 ,  C07C5/333 ,  C07C5/48 ,  B01J23/00 ,  B01J23/887

CPC classification number: C07C5/48 ,  B01J23/00 ,  B01J23/002 ,  B01J23/8876 ,  B01J35/002 ,  B01J37/031 ,  B01J2523/00 ,  C07C2523/02 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/15 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

Abstract: The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2.In accordance with the present invention, a method of preparing butadiene to secure long-term operation stability by maintaining the intensity of a catalyst despite oxidative dehydrogenation and not to decrease selectivity due to less side reaction is provided.

公开(公告)号：US11446622B2

公开(公告)日：2022-09-20

申请号：US17274737

申请日：2020-08-12

Applicant: LG CHEM, LTD.

Inventor： Joo Young Cheon ,  Dong Hyun Ko ,  Jun Han Kang ,  Sang Jin Han ,  Hyun Jin Cho ,  Jae Kwon Jeoung

IPC: B01J8/06

Abstract: A socket-type fluid distributor for distributing and supplying a gas and/or liquid reactant into a reactor body. The socket-type fluid distributor includes: a distributor body, a bottom portion of which is inserted into the reactor body; a mixing flow path formed in a central portion of the distributor body such that the mixing flow path penetrates through the distributor body into the reactor body; a gas reactant input portion disposed above the distributor body and having a gas flow path; a liquid reactant input portion disposed between the distributor body and the gas reactant input portion and having a liquid flow path; and a flow control portion formed in the mixing flow path.

公开(公告)号：US10730809B2

公开(公告)日：2020-08-04

申请号：US16098077

申请日：2017-09-21

Applicant: LG CHEM, LTD.

Inventor： Myung Ji Suh ,  Dong Hyun Ko ,  Jun Han Kang ,  Kyong Yong Cha ,  Ye Seul Hwang ,  Jun Kyu Han ,  Sang Jin Han

IPC: C07C5/48 ,  B01J23/86 ,  B01J23/78 ,  B01J21/06 ,  B01J23/72 ,  B01J23/76 ,  B01J23/745 ,  B01J23/847 ,  B01J23/00 ,  B01J23/80 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08

Abstract: A method of preparing butadiene that includes supplying butene, oxygen, nitrogen, and steam into a reactor filled with a metal oxide catalyst, and performing an oxidative dehydrogenation reaction at a temperature of 300 to 450° C. as a reaction step; after the reaction step, maintaining supplying the butene, oxygen, nitrogen, and steam within a range within which the flow rate change of the butene, oxygen, nitrogen, and steam is less than ±40%, or stopping supplying the butene, and cooling the reactor to a temperature range of 200° C. or lower and higher than 70° C. as a first cooling step; and after the first cooling step, stopping supplying the butene, oxygen, nitrogen, and steam or stopping at least supplying the butene, and cooling the reactor to a temperature of 70° C. or lower as a second cooling step.

公开(公告)号：US10518250B2

公开(公告)日：2019-12-31

申请号：US15746758

申请日：2017-02-17

Applicant: LG CHEM, LTD.

Inventor： Dae Heung Choi ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Myung Ji Suh ,  Ye Seul Hwang ,  Sun Hwan Hwang ,  Seong Min Kim ,  Jun Han Kang ,  Joo Hyuck Lee ,  Hyun Seok Nam ,  Sang Jin Han ,  Jun Kyu Han

IPC: B01J23/745 ,  B01J23/75 ,  B01J23/78 ,  B01J23/80 ,  B01J23/889 ,  B01J35/02 ,  B01J35/08 ,  B01J37/00 ,  B01J37/03 ,  B01J37/08

Abstract: The present invention relates to a ferrite-based catalyst composite, a method of preparing the same, and a method of preparing butadiene using the same. More particularly, the present invention provides a ferrite-based catalyst composite having a shape that allows effective dispersion of excess heat generated in a butadiene production process and prevention of catalyst damage and side reaction occurrence by reducing direct exposure of a catalyst to heat, a method of preparing the ferrite-based catalyst composite, and a method of preparing butadiene capable of lowering the temperature of a hot spot and reducing generation of Cox by allowing active sites of a catalyst to have a broad temperature gradient (profile) during oxidative dehydrogenation using the ferrite-based catalyst composite, and thus, providing improved process efficiency.

公开(公告)号：US09969661B2

公开(公告)日：2018-05-15

申请号：US15021611

申请日：2015-10-20

Applicant: LG CHEM, LTD.

Inventor： Sang Jin Han ,  Jun Han Kang ,  Dong Hyun Ko ,  Hyun Seok Nam ,  Joo Hyuck Lee ,  Jun Kyu Han ,  Myung Ji Suh ,  Kyong Yong Cha ,  Dae Heung Choi ,  Ye Seul Hwang

IPC: C07C5/48 ,  C07C5/42 ,  C07C7/00 ,  C07C7/05 ,  C07C5/333 ,  B01J3/00

CPC classification number: C07C5/48 ,  B01J3/00 ,  C07C5/3332 ,  C07C5/42 ,  C07C7/005 ,  C07C7/05 ,  C07C11/167

Abstract: Disclosed are a method of preparing conjugated diene and a device therefor. More particularly, disclosed a method of preparing conjugated diene, wherein generated gas including butadiene is cooled and then water discharged at a lower part is not directly treated as waste water and subjected to byproduct removal and steam-extraction to utilize converted steam, and an installation issue of an existing biological waste water disposal equipment due to an excessive amount of byproducts can be resolved, and a device therefor are disclosed.

公开(公告)号：US09782765B2

公开(公告)日：2017-10-10

申请号：US14418027

申请日：2014-05-02

Applicant: LG Chem, Ltd.

Inventor： Myung Ji Suh ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Jun Han Kang ,  Dae Chul Kim ,  Hyun Seok Nam ,  Dae Heung Choi

IPC: C07C5/48 ,  B01J21/08 ,  B01J23/31 ,  B01J37/03 ,  B01J23/887 ,  B01J35/10 ,  B01J29/03 ,  B01J35/00 ,  B01J37/02 ,  B01J23/00

CPC classification number: B01J37/031 ,  B01J21/08 ,  B01J23/002 ,  B01J23/8872 ,  B01J23/8876 ,  B01J29/0308 ,  B01J29/0341 ,  B01J29/035 ,  B01J35/002 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061 ,  B01J37/0201 ,  B01J2523/00 ,  C07C5/48 ,  C07C2523/887 ,  Y02P20/582 ,  C07C11/167 ,  B01J2523/15 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/41 ,  B01J2523/13

Abstract: Disclosed are a mesoporous composite oxide catalyst, a method for preparing the same and a method for synthesizing 1,3-butadidne using the same. The surface area is increased by introducing certain porous silica into preparation of a catalyst for synthesizing 1,3-butadiene, thereby improving a conversion ratio of normal-butene, and selectivity and yield of 1,3-butadiene, and providing economic efficiency from the viewpoint of decreasing an amount of used metal and reducing catalyst production cost.

公开(公告)号：US09724676B2

公开(公告)日：2017-08-08

申请号：US14394426

申请日：2014-05-02

Applicant: LG CHEM, LTD.

Inventor： Dae Heung Choi ,  Dong Hyun Ko ,  Jun Han Kang ,  Kyong Yong Cha ,  Dae Chul Kim ,  Hyun Seok Nam ,  Myung Ji Suh

IPC: B01J23/887 ,  C07C5/48 ,  B01J37/03 ,  B01J23/00 ,  B01J23/31 ,  B01J23/34

CPC classification number: B01J23/8876 ,  B01J23/002 ,  B01J23/31 ,  B01J23/34 ,  B01J37/031 ,  B01J2523/00 ,  C07C5/48 ,  C07C2523/04 ,  C07C2523/31 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/15 ,  B01J2523/25 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/821 ,  B01J2523/842 ,  B01J2523/845

Abstract: Disclosed is a multi-component bismuth molybdate catalyst for production of butadiene which comprises bismuth, molybdenum and at least one metal having a monovalent, divalent or trivalent cation, and further comprises cesium and potassium and thus has advantages of improving conversion ratio, yield and selectivity of butadiene and of providing stability of process operation.