Title:
UNIT FOR PREPARING DIESTER-BASED MATERIAL, AND SYSTEM FOR PREPARING DIESTER-BASED MATERIAL, COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2021/002705
Kind Code:
A1
Abstract:
The present invention relates to a continuous preparation system, and to a diester-based material preparation unit included therein, comprising: a reaction device for esterifying a dicarboxylic acid and a primary alcohol; a column for performing gas-liquid separation on a primary alcohol and water having flowed therein; a heat exchange device for recovering the heat of the gaseous line of the column; a condenser provided at the rear end of the heat exchange device so as to liquefy a mixture of gaseous primary alcohol and water; and a layer separator for separating a layer from the mixture of the liquefied primary alcohol and water, wherein the heat exchange device comprises a first heat exchanger for performing heat exchange with the material injection line of the reaction device, a second heat exchanger for performing heat exchange with a line through which a low-temperature stream flows in a process, and/or a second heat exchanger for performing heat exchange with the condensed water generated in the process. The present invention can reduce the amount of refrigerant, reduce the steam amount in a reactor and improve heat efficiency of the entire process.
Inventors:
JEONG JAE HUN (KR)
LEE SUNG KYU (KR)
CHOO YEON UK (KR)
LEE SEOK GOO (KR)
LEE SUNG KYU (KR)
CHOO YEON UK (KR)
LEE SEOK GOO (KR)
Application Number:
PCT/KR2020/008674
Publication Date:
January 07, 2021
Filing Date:
July 02, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C67/08; C07C67/03; C07C67/52; C07C69/82
Foreign References:
| KR0122429B1 | 1997-11-11 | |||
| KR100806353B1 | 2008-02-27 | |||
| KR20190027623A | 2019-03-15 | |||
| JPH09295958A | 1997-11-18 | |||
| JP2002088020A | 2002-03-27 | |||
| KR20180074984A | 2018-07-04 | |||
| KR100443389B1 | 2004-11-16 | |||
| KR20190027622A | 2019-03-15 | |||
| KR20190027623A | 2019-03-15 | |||
| KR101663586B1 | 2016-10-10 | |||
| KR20190027623A | 2019-03-15 |
Other References:
MUSTAFIZUR RAHMANCHRISTOPHER S.BRAZEL: "The plasticizer market: an assessment of traditional plasticizers and research trends to meet new challenges", PROGRESS IN POLYMER SCIENCE, vol. 29, 2004, pages 1223 - 1248, XP002711921, DOI: 10.1016/J.PROGPOLYMSCI.2004.10.001
NR JANJUA ET AL.: "Systemic Uptake of Diethyl Phthalate, Dibutyl Phthalate, and Butyl Paraben Following Whole-body Topical Application and Reproductive and Thyroid Hormone Levels in Humans", ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 42, 2008, pages 7522 - 7527
See also references of EP 3995482A4
NR JANJUA ET AL.: "Systemic Uptake of Diethyl Phthalate, Dibutyl Phthalate, and Butyl Paraben Following Whole-body Topical Application and Reproductive and Thyroid Hormone Levels in Humans", ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 42, 2008, pages 7522 - 7527
See also references of EP 3995482A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
Download PDF:
Previous Patent: LIGHTING MODULE, LIGHTING APPARATUS AND LAMP
Next Patent: STEAM DISCHARGE POUCH FOR MICROWAVE OVEN
Next Patent: STEAM DISCHARGE POUCH FOR MICROWAVE OVEN