Title:
ACETIC ACID PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/149856
Kind Code:
A1
Abstract:
The acetic acid production method according to the present invention subjects an acetic acid solution that contains at least acetic acid at a concentration not lower than 90 mass%, acetic anhydride, and water, and that has an acetic anhydride equilibrium concentration higher than an acetic anhydride concentration, to an acetic anhydride reduction measure for making the acetic anhydride equilibrium concentration lower than the acetic anhydride concentration by increasing a water concentration and/or lowering the temperature, at or subsequent to a distillation column (5) of an acetic acid production device (X) for example. Such an acetic acid production method is suitable for obtaining a highly-pure acetic acid as a product.
Inventors:
SHIMIZU MASAHIKO (JP)
SAITO RYUJI (JP)
MIURA HIROYUKI (JP)
SAITO RYUJI (JP)
MIURA HIROYUKI (JP)
Application Number:
PCT/JP2016/084116
Publication Date:
September 08, 2017
Filing Date:
November 17, 2016
Export Citation:
Assignee:
DAICEL CORP (JP)
International Classes:
C07C51/487; C07C53/08; C07B61/00
Foreign References:
| JP2014503491A | 2014-02-13 | |||
| JPS4830254B1 | 1973-09-18 | |||
| JPS5365814A | 1978-06-12 | |||
| JPH11315046A | 1999-11-16 | |||
| JP2001505199A | 2001-04-17 |
Other References:
KNOPP J. A. ET AL.: "The thermodynamics of the thermal decomposition of acetic acid in the liquid phase", THE JOURNAL OF PHYSICAL CHEMISTRY, vol. 66, no. 8, 1962, pages 1513 - 1516, XP055420296, ISSN: 1089-5639
See also references of EP 3241821A4
See also references of EP 3241821A4
Attorney, Agent or Firm:
GOTO & CO. (JP)
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