公开(公告)号：US10350539B2

公开(公告)日：2019-07-16

申请号：US16082424

申请日：2017-12-05

Applicant: LG CHEM, LTD.

Inventor： Jong Hun Song ,  Se Won Baek ,  Yoon Jae Min ,  Jae Yul Kim

IPC: C07C51/43 ,  B01D53/14 ,  C07C51/46 ,  C07C51/48 ,  B01D11/04 ,  B01D3/36 ,  C07C57/04

Abstract: The present invention relates to a method of recovering (meth)acrylic acid and an apparatus used for the recovery method. The recovery method according to the present invention discharges each (meth)acrylic acid aqueous solution of different concentrations at a (meth)acrylic acid absorption tower, and uses an extraction solvent of a specific ratio in the step of extracting (meth)acrylic acid, thus enabling the operation of a continuous process of recovering (meth)acrylic acid that can secure a high (meth)acrylic acid recovery rate, and can simultaneously significantly reduce purification energy cost.

公开(公告)号：US10173956B1

公开(公告)日：2019-01-08

申请号：US16021861

申请日：2018-06-28

Applicant: LG CHEM, LTD.

Inventor： Jong Hun Song ,  Se Won Baek ,  Sul Hee Yoo ,  Yoon Jae Min

IPC: B01D11/04 ,  B01D3/00 ,  C07C51/44 ,  C07C51/48 ,  B01D3/14 ,  B01L3/00 ,  C07C51/43 ,  C07C51/47

Abstract: This disclosure relates to a method for continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The method of continuous recovery of (meth)acrylic acid according to the present invention may minimize loss of (meth)acrylic acid particularly in the distillation process, and yet enables stable operation of the distillation process and energy reduction.

公开(公告)号：US09718756B2

公开(公告)日：2017-08-01

申请号：US14903517

申请日：2014-07-08

Applicant: LG CHEM, LTD.

Inventor： Se Won Baek ,  Jong Hun Song ,  Sul Hee Yoo ,  Yoon Jae Min

IPC: C07C51/48 ,  C07C51/44 ,  B01D3/14 ,  B01D11/04 ,  B01D53/14 ,  B01D53/18 ,  C07C51/43 ,  C07C51/16

CPC classification number: C07C51/48 ,  B01D3/143 ,  B01D11/0484 ,  B01D11/0488 ,  B01D53/1418 ,  B01D53/18 ,  C07C51/16 ,  C07C51/43 ,  C07C51/44 ,  C07C57/04

Abstract: This disclosure relates to a method of continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The method of continuous recovery of (meth)acrylic acid according to the present invention may effectively remove scum formed in the continuous recovery process of (meth)acrylic acid, and simultaneously recover (meth)acrylic acid with excellent efficiency, thus enabling more stable operation of the continuous process.

公开(公告)号：US12186721B2

公开(公告)日：2025-01-07

申请号：US17429116

申请日：2020-09-03

Applicant: LG CHEM, LTD.

Inventor： Tae Gyeong Kang ,  Se Won Baek ,  Bong June Kim

IPC: B01J13/00 ,  B01J3/00 ,  C01B33/155 ,  C01B33/158 ,  C01B33/159

Abstract: Provided is a method for manufacturing an aerogel blanket, and an aerogel blanket having uniform thermal conductivity inside a substrate, wherein the method is capable of simplifying manufacturing equipment by performing gelation while rotating a substrate for a blanket into which a catalyzed sol is impregnated, improving manufacturing efficiency by controlling manufacturing time regardless of the thickness of the aerogel blanket, and improving thermal conductivity by uniformly forming aerogel in the substrate for a blanket.

公开(公告)号：US11866324B2

公开(公告)日：2024-01-09

申请号：US17056872

申请日：2019-11-27

Applicant: LG CHEM, LTD.

Inventor： Tae Gyeong Kang ,  Se Won Baek

IPC: C01B33/158 ,  B01J13/00 ,  C01B33/141 ,  C01B33/152

CPC classification number: C01B33/1585 ,  B01J13/0091 ,  C01B33/141 ,  C01B33/152

Abstract: A method for manufacturing an aerogel blanket, the method capable of simplifying manufacturing equipment by performing gelation while rotating a reaction vessel, improving manufacturing efficiency by controlling manufacturing time regardless of the thickness of an aerogel blanket and improving thermal conductivity by uniformly forming an aerogel in a substrate for blanket.

公开(公告)号：US20220371902A1

公开(公告)日：2022-11-24

申请号：US17621830

申请日：2020-09-03

Applicant: LG CHEM, LTD.

Inventor： Tae Gyeong Kang ,  Bong June Kim ,  Se Won Baek ,  Hyun Woo Jeon ,  Sung Min Yu ,  Young Hun Kim ,  Sang Woo Park

IPC: C01B33/158 ,  C01B33/159

Abstract: The present invention provides an aerogel blanket including a blanket base, aerogel coupled on the surface of the blanket base, and aerogel located at a space between the blanket bases, the aerogel coupled on the surface of the blanket base is 50 wt % based on the total weight of aerogel, wherein the aerogel blanket has the number of aerogel particles separated from the aerogel blanket ranging from 13,600 to 90,000 per ft3, when vibrating the aerogel blanket at a frequency of 1 Hz to 30 Hz for 2 hours to 10 hours.

公开(公告)号：US11033834B2

公开(公告)日：2021-06-15

申请号：US16737278

申请日：2020-01-08

Applicant: LG CHEM, LTD.

Inventor： Yoon Jae Min ,  Se Won Baek ,  Jong Hun Song ,  Jae Yul Kim

IPC: C07C57/04 ,  B01D3/14 ,  B01D11/04 ,  C07C51/44 ,  C07C51/48 ,  B01D53/14 ,  B01D3/00 ,  C07C51/50 ,  B01L3/00

Abstract: The present invention relates to a continuous recovery method of (meth)acrylic acid and an apparatus for use in the recovery method. A continuous recovery method of (meth)acrylic acid according to the present invention can ensure a high recovery rate of (meth)acrylic acid through a solvent recovering process in addition to enabling the stable recovery of (meth)acrylic acid and the operation of continuous processes.

公开(公告)号：US10035751B2

公开(公告)日：2018-07-31

申请号：US14914233

申请日：2014-08-26

Applicant: LG CHEM, LTD.

Inventor： Jong Hun Song ,  Se Won Baek ,  Sul Hee Yoo ,  Yoon Jae Min

IPC: C07C51/43 ,  C07C51/44 ,  C07C51/48 ,  B01D11/04 ,  B01D3/14 ,  B01D3/00 ,  C07C51/47

CPC classification number: C07C51/44 ,  B01D3/00 ,  B01D3/143 ,  B01D11/04 ,  B01L3/00 ,  C07C51/43 ,  C07C51/47 ,  C07C51/48 ,  Y02P20/57 ,  C07C57/04

Abstract: This disclosure relates to a method for continuous recovery of (meth)acrylic acid and an apparatus used for the recovery method. The method of continuous recovery of (meth)acrylic acid according to the present invention may minimize loss of (meth)acrylic acid particularly in the distillation process, and yet enables stable operation of the distillation process and energy reduction.

公开(公告)号：US09902679B2

公开(公告)日：2018-02-27

申请号：US15325687

申请日：2015-06-24

Applicant: LG CHEM, LTD.

Inventor： Sul Hee Yoo ,  Se Won Baek ,  Jong Hun Song ,  Yoon Jae Min

IPC: C07C51/42 ,  C07C51/46 ,  B01D3/36

CPC classification number: C07C51/46 ,  B01D3/143 ,  B01D3/36 ,  C07B63/00 ,  C07C41/46 ,  C07C51/43 ,  C07C57/04

Abstract: Provided are a method and an apparatus for recovering (meth)acrylic acid. The recovering method is used to save the energy required for a process of recovering (meth)acrylic acid because a process of separating high-boiling point by-products can be omitted, and to minimize a possibility of (meth)acrylic acid polymerization during the process of recovering (meth)acrylic acid. Therefore, the recovering method is used to obtain (meth)acrylic acid with less energy in a high yield.

公开(公告)号：US20250051172A1

公开(公告)日：2025-02-13

申请号：US18931857

申请日：2024-10-30

Applicant: LG Chem, Ltd.

Inventor： Kyu Reon Lee ,  Se Won Baek ,  Hyun Woo Jeon ,  Mi Ri Kim ,  Sung Min Yu ,  Sang Woo Park ,  Bong June Kim

IPC: C01B33/159 ,  C01B33/145 ,  C01B33/158 ,  F16L59/02

Abstract: A silica sol, a silica aerogel blanket using the same, and a method for manufacturing the same, wherein a hydrophobizing agent, a base catalyst, an organic solvent, and water are included in a catalyst composition when manufacturing the silica aerogel blanket, so that a wet aging step which is performed under high-temperature conditions and increases the amount of a solvent used, surface modification step which uses a large amount of an organic solvent and an expensive surface modifier, resulting in a process that is complex and long and thus inhibiting economic feasibility and productivity, can be omitted.