JPS54115314A - Separation and recovery of adipic acid - Google Patents

Separation and recovery of adipic acid

Info

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
Application number
JP2098678A
Other languages
Japanese (ja)
Inventor
Joji Nishikido
Nobuhiro Tamura
Yohei Fukuoka
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP2098678A priority Critical patent/JPS54115314A/en
Publication of JPS54115314A publication Critical patent/JPS54115314A/en
Pending legal-status Critical Current

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  • 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
JP2098678A 1978-02-27 1978-02-27 Separation and recovery of adipic acid Pending JPS54115314A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956912A (en) * 1972-10-06 1974-06-03

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956912A (en) * 1972-10-06 1974-06-03

Cited By (3)

* Cited by examiner, † Cited by third party
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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