公开(公告)号：US11583825B2

公开(公告)日：2023-02-21

申请号：US17297291

申请日：2020-08-07

申请人： LG CHEM, LTD.

发明人： Moon Sub Hwang ,  Jeong Seok Lee ,  Jong Hun Song ,  You Na Kim ,  Hong Min Lee

IPC分类号： B01J19/26 ,  B01J4/00 ,  B01D3/06

摘要： The present disclosure provides an apparatus for preparing oligomer including: a reactor; a gas-liquid separator; a solvent transfer line; a second transfer line; a first spray nozzle unit; and a second spray nozzle unit. The apparatus is capable of improving stability of the entire process by including a first spray nozzle unit and a second spray nozzle unit in a reactor and thus preventing by-products containing polymer substances such as C20+ from being entrained with a desired product during a reaction.

公开(公告)号：US11998963B2

公开(公告)日：2024-06-04

申请号：US17296906

申请日：2020-08-07

申请人： LG CHEM, LTD.

发明人： Moon Sub Hwang ,  Jeong Seok Lee ,  Jong Hun Song ,  You Na Kim ,  Hong Min Lee

IPC分类号： B08B9/093 ,  B08B9/087 ,  B08B9/34

CPC分类号： B08B9/093 ,  B08B9/087 ,  B08B9/34 ,  B08B2209/08

摘要： The present disclosure provides a reactor cleaning apparatus including: a fixing part having a partial region inserted into a hole formed in an upper portion of a reactor to be coupled to the reactor and fixing a pipe; the pipe inserted into a hole formed in the fixing part, protruding downward from the fixing part, and having a length adjustable in a vertical direction; a spray nozzle provided at a lower end of the pipe; and a screener provided on a lower side surface of the pipe, and a reactor cleaning method using the same.

公开(公告)号：US11511255B2

公开(公告)日：2022-11-29

申请号：US17267407

申请日：2020-05-20

申请人： LG CHEM, LTD.

发明人： Jong Hun Song ,  Jeong Seok Lee ,  You Na Kim ,  Hong Min Lee ,  Moon Sub Hwang

IPC分类号： B01J4/00 ,  B01J19/24 ,  C07C2/08 ,  B01J19/00 ,  B01J12/00

摘要： Provided is an apparatus for preparing oligomer including: a reactor for carrying out oligomerization reaction by supplying a monomer stream and a solvent stream; and line 1 and line 2 which are separately provided in a lower side of the reactor, wherein line 1 includes a first level control valve and line 2 includes a second level control valve, and the reactor is periodically alternately operated in first operation mode and second operation mode, thereby switching a pipe through which the product is discharged, so that a plugging phenomenon of the pipe through which the product is discharged and the valve can be prevented.