公开(公告)号：US20220370959A1

公开(公告)日：2022-11-24

申请号：US17621349

申请日：2020-09-25

Applicant: LG CHEM, LTD.

Inventor： Taehyeong KIM ,  Dae Hun KIM ,  Taeyoung PARK ,  Phill LEE ,  Kyunghoon MIN

IPC: B01D63/10 ,  B01D65/08

Abstract: Provided is a feed side spacer comprising a network structure, wherein the network structure includes a hexagonal eye, the hexagonal eye includes a pair of parallel portions parallel to a flow direction of a supply liquid, and an inclined portion disposed in a diagonal direction with respect to the flow direction of the supply liquid; the parallel portion has a length of 1 mm to 5 mm; the inclined portion has a length of 5.1 mm to 10 mm; and an angle formed by sides in contact with each other of the inclined portion is from 50° to 80°, and a separation membrane element comprising same.

公开(公告)号：US20240026040A1

公开(公告)日：2024-01-25

申请号：US18023671

申请日：2022-06-20

Applicant: LG CHEM, LTD.

Inventor： Gyunhyeok AHN ,  Yoon Jae MIN ,  Seul Ah LEE ,  Gicheul KIM ,  Hee Kwan PARK ,  Kyunghoon MIN

IPC: C08F2/01 ,  B01J20/26 ,  B01J20/28 ,  C08F120/06

CPC classification number: C08F2/01 ,  B01J20/261 ,  B01J20/267 ,  B01J20/28047 ,  C08F120/06 ,  B01J2220/68

Abstract: A continuous polymerization reactor for super absorbent polymer is disclosed. The continuous polymerization reactor includes a cylindrical body; a discharge part with a diameter decreasing downward, positioned at a lower part of the body; an inlet positioned at an upper part of and connected to the body, into which a monomer composition is introduced; an outlet positioned at a lower part of the discharge part, from which hydrogel polymer is discharged; and a discharge valve opening or closing the outlet, wherein a ratio (H1/D1) of a sum (H1) of a height of the body and a height of the discharge part to a diameter (D1) of the body is 2 to 4. In addition, a continuous polymerization reaction system comprising the continuous polymerization reactor is also disclosed.

公开(公告)号：US20220193610A1

公开(公告)日：2022-06-23

申请号：US17598566

申请日：2020-03-17

Applicant: LG CHEM, LTD.

Inventor： Taehyeong KIM ,  Taeyoung PARK ,  Phill LEE ,  Dae Hun KIM ,  Kyunghoon MIN

IPC: B01D61/10 ,  B01D61/02 ,  C02F1/44

Abstract: Provided is a feed spacer for reducing differential pressure of a reverse osmosis element, the feed spacer forming the reverse osmosis element, the feed spacer comprising a plurality of strands disposed in a mesh shape having predetermined intersection points, and wherein a vertical cross section of each of the strands has a rhombic shape such that a pressure loss of in the feed spacer is minimized by an effective flow of raw water at an interface of a reverse osmosis membrane, and a nozzle for forming the feed spacer.

公开(公告)号：US20200086276A1

公开(公告)日：2020-03-19

申请号：US16618958

申请日：2018-10-17

Applicant: LG CHEM, LTD.

Inventor： Ayoung LEE ,  Dae Hun KIM ,  Bumjoo KIM ,  Chong Kyu SHIN ,  Phill LEE ,  Kyunghoon MIN

IPC: B01D63/10 ,  B01D61/02 ,  B01D61/08 ,  B01D61/10 ,  C02F1/44

Abstract: Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.

公开(公告)号：US20240351003A1

公开(公告)日：2024-10-24

申请号：US18566082

申请日：2022-06-20

Applicant: LG CHEM, LTD.

Inventor： Dae Woo NAM ,  Kyunghoon MIN ,  Seul Ah LEE ,  Seokhyeon BAEK ,  Gyunhyeok AHN

IPC: B01J20/26 ,  B01J20/30

CPC classification number: B01J20/261 ,  B01J20/3085 ,  B01J2220/68

Abstract: The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, according to the preparation method of a super absorbent polymer of the present disclosure, it is possible to effectively control the initiation and inhibition of polymerization reactions, thereby reducing the content of unreacted monomers in the final product.

公开(公告)号：US20240278210A1

公开(公告)日：2024-08-22

申请号：US18566083

申请日：2022-06-20

Applicant: LG CHEM, LTD.

Inventor： Seul Ah LEE ,  Yoon Jae MIN ,  Gyunhyeok AHN ,  Gicheul KIM ,  Hee Kwan PARK ,  Kyunghoon MIN

IPC: B01J20/26 ,  B01J20/28 ,  B01J20/30

CPC classification number: B01J20/261 ,  B01J20/28004 ,  B01J20/28047 ,  B01J20/3021 ,  B01J20/3042 ,  B01J20/3078 ,  B01J20/3085 ,  B01J2220/68

Abstract: The present disclosure relates to a method for preparing a super absorbent polymer, and more particularly to a method for preparing a super absorbent polymer in which polymerization can be stably progressed by a continuous process in the polymerization stage