Title:
METHOD FOR PREPARATION OF HIGH-PURITY (METH)ACRYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2024/049103
Kind Code:
A1
Abstract:
The present invention provides a method for the preparation of a (meth)acrylic acid, the method comprising: a step for obtaining a (meth)acrylic acid aqueous solution by bringing a mixed gas containing (meth)acrylic acid into contact with water in an absorption tower; a step for supplying the obtained (meth)acrylic acid solution to a crystallization unit, crystallizing to obtain purified (meth)acrylic acid, and supplying the mother liquor separated from the purified (meth)acrylic acid to a water separation tower; a step for separating, in the water separation tower, an upper discharge stream containing water and a lower discharge stream containing (meth)acrylic acid and high-boiling by-products; and a step for supplying the lower discharge stream from the water separation tower to a high boiling point by-product separation tower, and supplying the upper discharge stream containing (meth)acrylic acid to the crystallization unit.
Inventors:
YOO SUNG JIN (KR)
JANG KYUNG SOO (KR)
LEE SUNG KYU (KR)
JANG KYUNG SOO (KR)
LEE SUNG KYU (KR)
Application Number:
PCT/KR2023/012556
Publication Date:
March 07, 2024
Filing Date:
August 24, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C51/43; C07C57/04
Foreign References:
| KR20040108610A | 2004-12-24 | |||
| KR20160030715A | 2016-03-21 | |||
| JP2007182437A | 2007-07-19 | |||
| KR20070077053A | 2007-07-25 | |||
| KR20010072021A | 2001-07-31 |
Attorney, Agent or Firm:
P&P PATENT LAW FIRM (KR)
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