EA199900982A1 - METHOD FOR ISOLATING CAPROLACTAM FROM NEUTRALIZED MIXTURE OF REARRANGEMENT PRODUCTS - Google Patents

METHOD FOR ISOLATING CAPROLACTAM FROM NEUTRALIZED MIXTURE OF REARRANGEMENT PRODUCTS

Info

Publication number
EA199900982A1
EA199900982A1 EA199900982A EA199900982A EA199900982A1 EA 199900982 A1 EA199900982 A1 EA 199900982A1 EA 199900982 A EA199900982 A EA 199900982A EA 199900982 A EA199900982 A EA 199900982A EA 199900982 A1 EA199900982 A1 EA 199900982A1
Authority
EA
Eurasian Patent Office
Prior art keywords
caprolactam
neutralized mixture
rearrangement products
mixture
isolating
Prior art date
Application number
EA199900982A
Other languages
Russian (ru)
Inventor
Йоаннес Альбертус Вильхельмус Лемменс
Антониус Якобус Франсискус Симонс
Луиз Аннмари Грот Зеверт
Original Assignee
Дсм Н.В.
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 Дсм Н.В. filed Critical Дсм Н.В.
Publication of EA199900982A1 publication Critical patent/EA199900982A1/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

Изобретение относится к способу выделения капролактама из нейтрализованной смеси продуктов перегруппировок, и эта смесь перегруппировок включает раствор капролактама в воде и раствор сульфата аммония в воде, путем экстракции органическим растворителем в смесителе, после которой полученную органическую фазу извлекают из водной фазы в сепараторе, и капролактам выделяют из органической фазы, причем органический растворитель диспергируют в нейтрализованной смеси перегруппировок в смесителе.Международная заявка была опубликована вместе с отчетом о международном поиске.The invention relates to a method for isolating caprolactam from a neutralized mixture of rearrangement products, and this mixture of rearrangements includes a solution of caprolactam in water and a solution of ammonium sulfate in water, by extraction with an organic solvent in a mixer, after which the resulting organic phase is removed from the aqueous phase in a separator, and caprolactam is isolated from the organic phase, and the organic solvent is dispersed in a neutralized mixture of rearrangements in the mixer. The international application was published together those with an international search report.

EA199900982A 1997-04-29 1998-04-20 METHOD FOR ISOLATING CAPROLACTAM FROM NEUTRALIZED MIXTURE OF REARRANGEMENT PRODUCTS EA199900982A1 (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
EA199900982A1 true EA199900982A1 (en) 2000-06-26

Family

ID=19764875

Family Applications (1)

Application Number Title Priority Date Filing Date
EA199900982A EA199900982A1 (en) 1997-04-29 1998-04-20 METHOD FOR ISOLATING CAPROLACTAM FROM NEUTRALIZED MIXTURE OF REARRANGEMENT PRODUCTS

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
DE60239191D1 (en) * 2001-03-01 2011-03-31 Dsm Ip Assets Bv METHOD FOR THE RECOVERY AND PURIFICATION OF CAPROLACTAM 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 System and method for reclaiming hexanolactam from rearrangement mixture
TWI565516B (en) * 2009-12-18 2017-01-11 卡普三世責任有限公司 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 Method for lowering caprolactam inclusion content 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
CN1253546A (en) 2000-05-17
PL336476A1 (en) 2000-06-19
KR20010020300A (en) 2001-03-15
TW408109B (en) 2000-10-11
BR9809420A (en) 2000-06-13
NL1005927C2 (en) 1998-11-02
AU6856598A (en) 1998-11-24
JP2001522371A (en) 2001-11-13
CO5040159A1 (en) 2001-05-29
CA2288156A1 (en) 1998-11-05
SK148799A3 (en) 2000-05-16
ID23781A (en) 2000-05-11
WO1998049140A1 (en) 1998-11-05
EP0980356A1 (en) 2000-02-23
BG103833A (en) 2000-06-30

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