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公开(公告)号：US12065529B2
公开(公告)日：2024-08-20
申请号：US17044494
申请日：2019-11-27
Applicant: LG Chem, Ltd.
Inventor： Sungkeun Jang , Changhoe Heo , Seonghun Kim , Eun Jung Joo , Donghoon Kim
Abstract: The present disclosure relates to a purification method of a polymerization solvent used in and recovered from the preparation of a polyolefin resin, which can effectively remove impurities, in particular polyolefin wax, from the polymerization solvent to obtain a purified polymerization solvent with high purity, and can improve energy efficiency.
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公开(公告)号：US11512153B2
公开(公告)日：2022-11-29
申请号：US16634094
申请日：2019-08-01
Applicant: LG CHEM, LTD.
Inventor： Jeong A Hwang , Daeyoung Shin , Sungkeun Jang , Eun Jung Joo , Won Kyun Lee
IPC: C08F6/00 , C08F2/01 , C08F212/10
Abstract: The present invention relates to a method of preparing an aromatic vinyl compound-vinyl cyanide compound polymer including a step of separating volatile components from a polymerization product containing an aromatic vinyl compound-vinyl cyanide compound polymer, a residual aromatic vinyl monomer, a residual vinyl cyanide monomer, and an organic solvent using a volatilization tank, and a step of condensing the separated volatile components using a condenser, wherein an organic solvent or an aromatic vinyl monomer is sprayed onto the volatile components being transferred to the condenser. Volatile components may be fully condensed in a condenser, thereby significantly reducing the amount of volatile components discharged to the outside without being condensed. Therefore, wastewater treatment costs consumed in treating the volatile components may be reduced, and the amount of vinyl cyanide monomers harmful to the human body discharged into the atmosphere may be significantly reduced.
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公开(公告)号：US11465906B2
公开(公告)日：2022-10-11
申请号：US16496061
申请日：2018-11-12
Applicant: LG CHEM, LTD.
Inventor： Seung Won Choi , Sung Keun Jang , Eun Jung Joo , Young Ho Lee
IPC: B01D3/14 , C01B33/158 , C07C29/80 , B01D3/42
Abstract: Provided is a method for purifying a waste solvent by removing carbon dioxide contained in a waste solvent derived from supercritical waste liquid generated after supercritical drying by a decompression process, and removing ammonia by a multi-stage distillation process to obtain a solvent of high purity, which can be reused in producing silica aerogel or a silica aerogel blanket.
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公开(公告)号：US11944987B2
公开(公告)日：2024-04-02
申请号：US17269203
申请日：2020-07-13
Applicant: LG CHEM, LTD.
Inventor： Sang Ho Lee , Dae Young Shin , Sung Woo Jeong , Eun Jung Joo
Abstract: A pressurizing centrifugal dehydrator for removing moisture according to the present disclosure includes: an inner basket into which slurry is introduced; an outer basket surrounding the inner basket; a blocking barrier disposed in the outer basket; and a gas supplying portion for supplying gas into the inner basket and/or the outer basket, wherein a dehydration product is positioned between an outer circumference of the blocking barrier and an inner side of the outer basket to maintain airtightness of the outer basket.
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公开(公告)号：US09364780B2
公开(公告)日：2016-06-14
申请号：US14438470
申请日：2014-07-18
Applicant: LG CHEM, LTD.
Inventor： Dae Young Shin , Eun Jung Joo , Dong Kwon Lee , Chang Hoe Heo , Jong Ku Lee
CPC classification number: B01D45/16 , B01D3/08 , B01D3/30 , B01D19/0047 , B01D19/0052 , B01D19/0057 , B01D45/14 , B01J10/00 , B01J19/006 , B01J19/0066 , B01J19/1812 , B01J19/1887 , B01J19/20 , B01J2219/00247 , B01J2219/0077 , B01J2219/00774 , B01J2219/00779 , B01J2219/185 , B01J2219/1943
Abstract: Disclosed is an apparatus for separating gas and liquid. The apparatus for separating gas and liquid includes a housing, a rotating shaft provided inside the housing, a drive unit configured to rotate the rotating shaft, a rotating cone mounted at the rotating shaft to rotate about the rotating shaft and having a diameter decreasing from an upper end to a lower end thereof, and a fixed cone formed by coupling at least two first unit members in a circumferential direction of the rotating shaft, disposed in the housing to be spaced apart from the rotating cone and having a diameter decreasing an upper end to a lower end thereof.
Abstract translation: 公开了一种用于分离气体和液体的装置。 用于分离气体和液体的装置包括壳体，设置在壳体内部的旋转轴，构造成旋转旋转轴的驱动单元，安装在旋转轴处的旋转锥体，以围绕旋转轴旋转，并且具有从 以及通过在旋转轴的圆周方向上联接至少两个第一单元构件形成的固定锥体，其设置在壳体中以与旋转锥体间隔开并且具有减小上端的直径 到其下端。
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Patent Agency Ranking
公开(公告)号：US20150283488A1
公开(公告)日：2015-10-08
申请号：US14438470
申请日：2014-07-18
Applicant: LG CHEM, LTD.
Inventor： Dae Young Shin , Eun Jung Joo , Dong Kwon Lee , Chang Hoe Heo , Jong Ku Lee
IPC: B01D45/16
CPC classification number: B01D45/16 , B01D3/08 , B01D3/30 , B01D19/0047 , B01D19/0052 , B01D19/0057 , B01D45/14 , B01J10/00 , B01J19/006 , B01J19/0066 , B01J19/1812 , B01J19/1887 , B01J19/20 , B01J2219/00247 , B01J2219/0077 , B01J2219/00774 , B01J2219/00779 , B01J2219/185 , B01J2219/1943
Abstract: Disclosed is an apparatus for separating gas and liquid. The apparatus for separating gas and liquid includes a housing, a rotating shaft provided inside the housing, a drive unit configured to rotate the rotating shaft, a rotating cone mounted at the rotating shaft to rotate about the rotating shaft and having a diameter decreasing from an upper end to a lower end thereof, and a fixed cone formed by coupling at least two first unit members in a circumferential direction of the rotating shaft, disposed in the housing to be spaced apart from the rotating cone and having a diameter decreasing an upper end to a lower end thereof.
Abstract translation: 公开了一种用于分离气体和液体的装置。 用于分离气体和液体的装置包括壳体，设置在壳体内部的旋转轴，构造成旋转旋转轴的驱动单元，安装在旋转轴处的旋转锥体，以围绕旋转轴旋转，并且具有从 以及通过在旋转轴的圆周方向上联接至少两个第一单元构件形成的固定锥体，其设置在壳体中以与旋转锥体间隔开并且具有减小上端的直径 到其下端。
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公开(公告)号：US11518822B2
公开(公告)日：2022-12-06
申请号：US17051884
申请日：2019-11-05
Applicant: LG Chem, Ltd.
Inventor： Seung Won Choi , Eun Jung Joo
IPC: C08F2/01 , C08F210/16
Abstract: Provided is a method of predicting fouling during a process of preparing polyolefin. According to the present invention, occurrence of fouling may be predicted by calculating R value according to the following Equation 1 in real-time with high reliability during a copolymerization process of preparing polyolefin: R (ratio of unreacted alpha-olefin comonomer to produced polyolefin polymer) =amount of unreacted alpha-olefin comonomer (unit: kg/hr) / amount of produced polyolefin polymer (unit: kg/hr) [Equation 1] Therefore, productivity of the polyolefin preparation process may be further increased.
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公开(公告)号：US11492423B2
公开(公告)日：2022-11-08
申请号：US17059897
申请日：2019-08-23
Applicant: LG Chem, Ltd.
Inventor： Seung Won Choi , Eun Jung Joo
Abstract: A method for predicting physical properties of a polyethylene resin is provided, which can reliably predict a proper charging ratio of a crosslinking agent in the production process of a low density crosslinked polyethylene resin, and the physical properties of the polyethylene resin achieved therefrom. A method for producing a polyethylene resin by applying the same method is also provided.
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公开(公告)号：US20210079136A1
公开(公告)日：2021-03-18
申请号：US16757533
申请日：2018-10-30
Applicant: LG Chem, Ltd.
Inventor： Dae Young Shin , Eun Jung Joo , Jin Ho Jung , Choong Hoon Lee , Kyung Soo Park , Yutaek Sung
IPC: C08F210/02 , B01J3/04 , C08K5/14 , C08L23/08 , C08F2/01
Abstract: The present invention relates to a method for preparing ethylene vinylacetate copolymer that can improve the mechanical strength of copolymer by controlling the polymerization conditions using an autoclave reactor.
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公开(公告)号：US20190262742A1
公开(公告)日：2019-08-29
申请号：US16308183
申请日：2017-10-19
Applicant: LG Chem, Ltd.
Inventor： Dae Young Shin , Eun Jung Joo , Joon Ho Shin , Chang Hoe Heo , Sung Keun Jang
Abstract: The present invention relates to an olefinic monomer recovery device capable of suppressing fouling and pressure drop in the recovery device in a process of separating and recovering unreacted monomers after production of a polyolefin resin. The olefinic monomer recovery device is used for separating and recovering unreacted olefinic monomers after production of a polyolefin resin, the apparatus comprising a vertical-type heat exchange unit, and a knock-out drum unit.
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