JPS54115314A - Separation and recovery of adipic acid - Google Patents
Separation and recovery of adipic acidInfo
- Publication number
- JPS54115314A JPS54115314A JP2098678A JP2098678A JPS54115314A JP S54115314 A JPS54115314 A JP S54115314A JP 2098678 A JP2098678 A JP 2098678A JP 2098678 A JP2098678 A JP 2098678A JP S54115314 A JPS54115314 A JP S54115314A
- Authority
- JP
- Japan
- Prior art keywords
- adipic acid
- mixture
- acid
- recovered
- separation
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare high purity adipic acid, by crystallizing and separating adipic acid from mixture of glutaric acid, succinic acid and adipic acid, which is a by- product of adipic acid production, and feeding the recovered adipic acid to the purification prcess.
CONSTITUTION: Adipic acid is separated from a mixture of glutaric acid, succinic acid and adipic acid, which is a by-product of adipic acid production process or of the process for the preparation of cyclohexanol and cyclohexanone by the air- oxidation of cyclohexane, using water or alcohol as recrystallization solvent. The separation efficiency is improved by adding 5W100 wt%, based on the mixture, of inorganic salt to the mixture. The inorganic mixture is, e.g. KCl, KBr, K2SO4, KNO3, Na2SO4, Ca(NO3)2, etc., and pref. (NH4)2SO4, NaCl or CaCl2. The recovered adipic acid is fed to the purification process.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2098678A JPS54115314A (en) | 1978-02-27 | 1978-02-27 | Separation and recovery of adipic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2098678A JPS54115314A (en) | 1978-02-27 | 1978-02-27 | Separation and recovery of adipic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54115314A true JPS54115314A (en) | 1979-09-07 |
Family
ID=12042459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2098678A Pending JPS54115314A (en) | 1978-02-27 | 1978-02-27 | Separation and recovery of adipic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54115314A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5264624A (en) * | 1991-03-05 | 1993-11-23 | Bayer Aktiengesellschaft | Process for the recovery of adipic acid |
US5296639A (en) * | 1992-12-18 | 1994-03-22 | E. I. Du Pont De Nemours And Company | Adipic acid purification |
WO2001007389A1 (en) * | 1999-07-23 | 2001-02-01 | Chemintel (India) Private Limited | Process for crystallization of dicarboxylic acids |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956912A (en) * | 1972-10-06 | 1974-06-03 |
-
1978
- 1978-02-27 JP JP2098678A patent/JPS54115314A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956912A (en) * | 1972-10-06 | 1974-06-03 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5264624A (en) * | 1991-03-05 | 1993-11-23 | Bayer Aktiengesellschaft | Process for the recovery of adipic acid |
US5296639A (en) * | 1992-12-18 | 1994-03-22 | E. I. Du Pont De Nemours And Company | Adipic acid purification |
WO2001007389A1 (en) * | 1999-07-23 | 2001-02-01 | Chemintel (India) Private Limited | Process for crystallization of dicarboxylic acids |
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