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BR9809420A - Process for recovery of caprolactam from a mixture with neutralized redistribution - Google Patents

Process for recovery of caprolactam from a mixture with neutralized redistribution

Info

Publication number
BR9809420A
BR9809420A BR9809420-3A BR9809420A BR9809420A BR 9809420 A BR9809420 A BR 9809420A BR 9809420 A BR9809420 A BR 9809420A BR 9809420 A BR9809420 A BR 9809420A
Authority
BR
Brazil
Prior art keywords
redistribution
mixture
caprolactam
neutralized
recovery
Prior art date
Application number
BR9809420-3A
Other languages
Portuguese (pt)
Inventor
Joannes Albertus Wilhe Lemmens
Antonius Jacobus Franci Simons
Louise Annemarie Groot Zevert
Original Assignee
Dsm Nv
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 Dsm Nv filed Critical Dsm Nv
Publication of BR9809420A publication Critical patent/BR9809420A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

Patente de Invenção:<B>"PROCESSO PARA RECUPERAçãO DE CAPROLACTAMA A PARTIR DE UMA MISTURA COM REDISTRIBUIçãO NEUTRALIZADA"<D> A presente invenção refere-se a um processo para recuperação de caprolactama a partir de uma mistura com redistribuição neutralizada, mistura com redistribuição esta que compreende uma solução de caprolactama em água e uma solução de sulfato de amónio em água, através de extração com um solvente orgânico em um misturador, após o que a fase orgânica resultante é separada da fase aquosa em um separador e a caprolactama é recuperada da fase orgânica, sendo o solvente orgânico disperso na mistura com redistribuição neutralizada no misturador.Invention Patent: <B> "PROCESS FOR CAPROLACTAM RECOVERY FROM A MIXTURE WITH NEUTRALIZED REDISTRIBUTION" <D> The present invention relates to a process for recovering caprolactam from a mixture with neutralized redistribution, mixture with redistribution which comprises a solution of caprolactam in water and a solution of ammonium sulphate in water, by extraction with an organic solvent in a mixer, after which the resulting organic phase is separated from the aqueous phase in a separator and the caprolactam is recovered of the organic phase, the organic solvent being dispersed in the mixture with neutralized redistribution in the mixer.

BR9809420-3A 1997-04-29 1998-04-20 Process for recovery of caprolactam from a mixture with neutralized redistribution BR9809420A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1005927A NL1005927C2 (en) 1997-04-29 1997-04-29 Method for recovering caprolactam from a neutralized rearrangement mixture.
PCT/NL1998/000216 WO1998049140A1 (en) 1997-04-29 1998-04-20 Process for recovering caprolactam from a neutralized rearrangement mixture

Publications (1)

Publication Number Publication Date
BR9809420A true BR9809420A (en) 2000-06-13

Family

ID=19764875

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9809420-3A BR9809420A (en) 1997-04-29 1998-04-20 Process for recovery of caprolactam from a mixture with neutralized redistribution

Country Status (16)

Country Link
EP (1) EP0980356A1 (en)
JP (1) JP2001522371A (en)
KR (1) KR20010020300A (en)
CN (1) CN1253546A (en)
AU (1) AU6856598A (en)
BG (1) BG103833A (en)
BR (1) BR9809420A (en)
CA (1) CA2288156A1 (en)
CO (1) CO5040159A1 (en)
EA (1) EA199900982A1 (en)
ID (1) ID23781A (en)
NL (1) NL1005927C2 (en)
PL (1) PL336476A1 (en)
SK (1) SK148799A3 (en)
TW (1) TW408109B (en)
WO (1) WO1998049140A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2359791T3 (en) * 2001-03-01 2011-05-26 Dsm Ip Assets B.V. PROCESS TO RECOVER AND PURIFY CAPROLACTAMA FROM AN ORGANIC SOLVENT.
TW200951112A (en) 2008-06-13 2009-12-16 China Petrochemical Dev Corp System of recycle caprolactam form rearrangement mixture and method thereof
CN101613311B (en) * 2008-06-25 2013-01-02 中国石油化学工业开发股份有限公司 Systems and methods for recovering caprolactam from rearrangement mixtures
WO2011073400A2 (en) 2009-12-18 2011-06-23 Dsm Ip Assets B.V. Caprolactam recovery with membrane treatment
CN102212033B (en) * 2010-04-07 2013-02-27 中国科学院过程工程研究所 A method for reducing the amount of caprolactam entrained in ammonium sulfate crystals
CN102234248A (en) * 2010-04-23 2011-11-09 中国石油化工股份有限公司 Impurity extraction method for caprolactam production
CN105408313B (en) * 2013-07-26 2018-11-09 Cap Iii 有限公司 A kind of continuation method of commercial scale recycling caprolactam and crystalline sulfuric acid ammonium
CN106316955A (en) * 2016-10-28 2017-01-11 湖北三宁化工股份有限公司 Refining device for high-purity caprolactam and purifying method
CN108341763B (en) * 2018-04-24 2020-12-01 河北美邦工程科技股份有限公司 Caprolactam crystallization and purification method
CN111471015B (en) * 2019-01-24 2024-01-30 中国石油化工股份有限公司 Device and method for recycling caprolactam in benzene distillation residual liquid
CN109942492A (en) * 2019-04-11 2019-06-28 江苏凌瑞化工科技有限公司 A kind of caprolactam refining technique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031308B (en) * 1956-11-10 1958-06-04 Bayer Ag Process for the production of pure caprolactam from the neutralized reaction mixture of the Beckmann rearrangement of cyclohexanone oxime
DE3635363A1 (en) * 1986-10-17 1988-04-21 Basf Ag METHOD FOR NEUTRALIZING REACTION MIXTURES OBTAINED BY BECKMANN'S RESTORATION OF CYCLOHEXANONOXIM
JP2782919B2 (en) * 1990-06-12 1998-08-06 宇部興産株式会社 Method for purifying lactam-containing organic solution
BE1007298A3 (en) * 1993-07-19 1995-05-09 Dsm Nv PROCESS FOR THE PURIFICATION OF A WATER-EPSILON-caprolactam mixture.

Also Published As

Publication number Publication date
AU6856598A (en) 1998-11-24
CN1253546A (en) 2000-05-17
JP2001522371A (en) 2001-11-13
CA2288156A1 (en) 1998-11-05
NL1005927C2 (en) 1998-11-02
WO1998049140A1 (en) 1998-11-05
PL336476A1 (en) 2000-06-19
EP0980356A1 (en) 2000-02-23
KR20010020300A (en) 2001-03-15
EA199900982A1 (en) 2000-06-26
BG103833A (en) 2000-06-30
CO5040159A1 (en) 2001-05-29
ID23781A (en) 2000-05-11
TW408109B (en) 2000-10-11
SK148799A3 (en) 2000-05-16

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A,6A,7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1892 DE 10/04/2007.