JPS571406A - Purification of aqueous solution of acetic acid - Google Patents

Purification of aqueous solution of acetic acid

Info

Publication number
JPS571406A
JPS571406A JP7543980A JP7543980A JPS571406A JP S571406 A JPS571406 A JP S571406A JP 7543980 A JP7543980 A JP 7543980A JP 7543980 A JP7543980 A JP 7543980A JP S571406 A JPS571406 A JP S571406A
Authority
JP
Japan
Prior art keywords
acetic acid
tank
aqueous solution
solution
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP7543980A
Other languages
Japanese (ja)
Other versions
JPS6326736B2 (en
Inventor
Yoshinori Matsunaga
Noboru Idemoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP7543980A priority Critical patent/JPS571406A/en
Publication of JPS571406A publication Critical patent/JPS571406A/en
Publication of JPS6326736B2 publication Critical patent/JPS6326736B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To purify the aqueous solution of acetic acid while reducing the loss of acetic acid by a method wherein an aqueous acetic acid soluction containing an inorganic monobasic acid is fed into a desalting chamber of an electrodialyzer comprising an ion exchange membrane and the pH of the solution is ajusted.
CONSTITUTION: A crude aqeous solution of acetic acid containing the inorganic monobasic acid is supplied from a tank 1 for the crude solution to a tank 2 for liquid circulted into the desalting chamber. The aqueous solution of acetic acid is then circulated between the tank 2 and the electrodialyzer 3 based on the ion exchange membrane method, in which electrodialysis is conducted. During the electrodialysis, said monobasic acid in the solution permeates through the ion exchange membrane into a concentrating chamber, therby increasing the pH in the concentrating chamber. On the other hand, the pH of the aqueous solution of acetic acid in the desalting chamber is maintained in the range of 0.7W2.0 by the liquid being fed from the tank 1 into the tank 2. In addition, the circulating aqueous solution of acetic acid is taken out via a taking-out port 5 of the tank 2 in an amount corresponding to the feed amount of the crude aqueous solution of accetic acid.
COPYRIGHT: (C)1982,JPO&Japio
JP7543980A 1980-06-06 1980-06-06 Purification of aqueous solution of acetic acid Granted JPS571406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7543980A JPS571406A (en) 1980-06-06 1980-06-06 Purification of aqueous solution of acetic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7543980A JPS571406A (en) 1980-06-06 1980-06-06 Purification of aqueous solution of acetic acid

Publications (2)

Publication Number Publication Date
JPS571406A true JPS571406A (en) 1982-01-06
JPS6326736B2 JPS6326736B2 (en) 1988-05-31

Family

ID=13576261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7543980A Granted JPS571406A (en) 1980-06-06 1980-06-06 Purification of aqueous solution of acetic acid

Country Status (1)

Country Link
JP (1) JPS571406A (en)

Also Published As

Publication number Publication date
JPS6326736B2 (en) 1988-05-31

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