Title:
METHOD FOR RECOVERING ACETIC ACID WHEN PREPARING AROMATIC CARBOXYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2015/115725
Kind Code:
A1
Abstract:
The present invention provides a method for recovering an acetic acid from a stream generated by an oxidation reaction of an aromatic compound in the preparation of an aromatic carboxylic acid. In order to separate water and an acetic acid from the stream, the water is removed through an extraction column and the acetic acid can be recovered. In particular, the stream discharged from a dehydration column is uniformly refluxed by using the extraction column so as to allow the discharged stream to include 1 to 45 wt% of acetic acid, thereby maintaining a high concentration of acetic acid. Therefore, the amount of steam used in a reboiler for evaporating water inside the dehydration column can be reduced.
Inventors:
KANG KI JOON (KR)
KIM JE YOUNG (KR)
KIM KWANG HYUN (KR)
KIM JE YOUNG (KR)
KIM KWANG HYUN (KR)
Application Number:
PCT/KR2014/011334
Publication Date:
August 06, 2015
Filing Date:
November 24, 2014
Export Citation:
Assignee:
AMTPACIFIC CO LTD (KR)
KANG KI JOON (KR)
KANG KI JOON (KR)
International Classes:
C07C51/44; C07C53/08
Foreign References:
| KR20120097305A | 2012-09-03 | |||
| KR20070083174A | 2007-08-23 |
Other References:
JUAN D. GOMEZ ET AL.: "ASSESSMENT OF OSMOTIC MECHANISMS PAIRING DESALINATION CONCENTRATE AND WASTEWATER TREATMENT.", TEXAS WATER DEVELOPMENT BOARD., October 2011 (2011-10-01), XP055217607
Attorney, Agent or Firm:
TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (KR)
특허법인 태백 (KR)
특허법인 태백 (KR)
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