Title:
METHOD FOR PRODUCING ACRYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2022/119127
Kind Code:
A1
Abstract:
The present invention provides a method for producing acrylic acid, wherein the method for producing acrylic acid comprises the steps of: feeding lactic acid to a reactor and preparing a reaction product containing acrylic acid by a dehydration reaction; feeding a reactor discharge stream containing the reaction product to a cooling tower, subjecting same to condensation, and transporting a bottom discharge stream containing the condensate to an acrylic acid purification unit while discharging un-condensed materials as a top discharge stream to feed the top discharge stream to a distillation tower; and circulating the bottom discharge stream containing acrylic acid from the distillation tower to the cooling tower and removing acetaldehyde from the top discharge stream.
Inventors:
KIM MI KYUNG (KR)
KIM HYEBIN (KR)
LEE JAEIK (KR)
KIM EUNKYO (KR)
KIM HYEBIN (KR)
LEE JAEIK (KR)
KIM EUNKYO (KR)
Application Number:
PCT/KR2021/015177
Publication Date:
June 09, 2022
Filing Date:
October 27, 2021
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C51/487; C07C57/04
Foreign References:
| KR20170113177A | 2017-10-12 | |||
| KR20060048785A | 2006-05-18 | |||
| JP2014189510A | 2014-10-06 | |||
| KR20170128262A | 2017-11-22 | |||
| KR101662093B1 | 2016-10-04 | |||
| KR20200167556A | 2020-12-03 | |||
| JP2014189513A | 2014-10-06 |
Attorney, Agent or Firm:
CHOI, Hee-Kyeong et al. (KR)
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