公开(公告)号：US20180273445A1

公开(公告)日：2018-09-27

申请号：US15760899

申请日：2016-12-07

Applicant: LG CHEM, LTD.

Inventor： Mi-Kyung KIM ,  Jae-Ik LEE ,  Jong-Ku LEE ,  Jeong-Seok LEE

IPC: C07C5/327 ,  C07C7/04 ,  B01J19/24

CPC classification number: C07C5/327 ,  B01J19/24 ,  B01J21/04 ,  B01J21/08 ,  B01J23/28 ,  B01J23/30 ,  B01J23/31 ,  B01J23/40 ,  B01J23/745 ,  B01J2219/00103 ,  B01J2219/24 ,  C07C5/333 ,  C07C7/005 ,  C07C7/04 ,  C07C7/09 ,  C07C2521/04 ,  C07C2521/08 ,  C07C2523/02 ,  C07C2523/06 ,  C07C2523/10 ,  C07C2523/16 ,  C07C2523/40 ,  C07C2523/70 ,  Y02P20/124 ,  Y02P20/51 ,  C07C15/46 ,  C07C15/44

Abstract: The present invention relates to energy saving method and apparatus for preparing styrene and alpha-methylstyrene concurrently, by which economic feasibility may be improved by reusing energy during preparing styrene and alpha-methylstyrene concurrently.

公开(公告)号：US20180251579A1

公开(公告)日：2018-09-06

申请号：US15527179

申请日：2016-10-11

Applicant: LG CHEM, LTD.

Inventor： Eun-Kyo KIM ,  Jong-Ku LEE ,  Jeong-Seok LEE ,  Mi-Kyung KIM

IPC: C08F6/00 ,  B01D3/14 ,  C07C2/08 ,  C07C11/02

CPC classification number: C08F6/001 ,  B01D3/143 ,  B01D2256/24 ,  B01D2257/702 ,  C07C2/08 ,  C07C7/00 ,  C07C7/04 ,  C07C11/02 ,  C07C11/107 ,  C08F10/02 ,  C08F2500/02 ,  Y02P20/124

Abstract: Disclosed is a method of separating an ethylene oligomerization effluent, in which, during the separation and purification of a product obtained through ethylene oligomerization, the temperature of the reaction product is adjusted and used, thus improving energy efficiency.

公开(公告)号：US20170275423A1

公开(公告)日：2017-09-28

申请号：US15503934

申请日：2015-11-04

Applicant: LG CHEM, LTD.

Inventor： Woo Sung HWANG ,  Jong-Ku LEE ,  Seung Young PARK ,  Dong Kwon LEE ,  Hyun Ju CHO ,  Kwang Hyon KIM ,  Yong Hee AN ,  Jun Wye LEE

IPC: C08G64/34 ,  C08J3/07

Abstract: The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.

公开(公告)号：US20150041308A1

公开(公告)日：2015-02-12

申请号：US14469047

申请日：2014-08-26

Applicant: LG CHEM, LTD.

Inventor： Sung-Kyu LEE ,  Joon-HO SHIN ,  Jong-Ku LEE

IPC: B01D3/14 ,  C07C29/80

CPC classification number: B01D3/141 ,  B01D3/14 ,  C07C29/80 ,  C07C31/12

Abstract: The present invention relates to a dividing wall distillation column for producing high-purity n-butanol, and a method for the production of high-purity n-butanol by fractional distillation. More particularly, the present invention relates to a method which provides a dividing wall distillation column with crude n-butanol as a feed to perform a fractional distillation of n-butanol, and an apparatus thereof. The dividing wall distillation column of the present invention exhibits the effects of a two distillation column from only one distillation column, thereby reducing energy and the costs of installing the apparatus as compared to conventional distillation systems.

Abstract translation: 本发明涉及一种用于生产高纯度正丁醇的分隔壁蒸馏塔，以及通过分馏生产高纯度正丁醇的方法。 更具体地说，本发明涉及一种提供分馏壁蒸馏塔与粗正丁醇作为进料来进行正丁醇分馏的方法及其装置。 本发明的分隔壁蒸馏塔表现出来自仅一个蒸馏塔的两个蒸馏塔的作用，与传统的蒸馏系统相比，降低了能量和安装装置的成本。