GB1158998A - Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions Containing Organic Components. - Google Patents

Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions Containing Organic Components.

Info

Publication number
GB1158998A
GB1158998A GB5509766A GB5509766A GB1158998A GB 1158998 A GB1158998 A GB 1158998A GB 5509766 A GB5509766 A GB 5509766A GB 5509766 A GB5509766 A GB 5509766A GB 1158998 A GB1158998 A GB 1158998A
Authority
GB
United Kingdom
Prior art keywords
ammonium sulfate
ammonium sulphate
phase
organic components
recovery
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.)
Expired
Application number
GB5509766A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1158998A publication Critical patent/GB1158998A/en
Expired legal-status Critical Current

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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

1,158,998. Ammonium sulphate. STAMICARBON N.V. 8 Dec., 1966 [9 Dec., 1965], No. 55097/66. Heading C1A. In a process of preparing caprolactam from cyclohexanone oxime in a sulphuric acid medium the crude product is neutralized with ammonia and the crude lactam oil, which separates as an oil-phase, is extracted with an organic solvent, e.g. benzene, to leave an aqueous ammonium sulphate solution containing more than 25%, based on the weight of the sulphate, of organic components which are soluble at room temperature; ammonium sulphate is recovered from this solution by evaporating sufficient water to form an organic phase and an aqueous phase, removing this organic phase and crystallizing ammonium sulphate from the remaining aqueous phase. Ammonium sulphate may also be crystallized from the aqueous phase from which the crude lactam oil separates.
GB5509766A 1965-12-09 1966-12-08 Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions Containing Organic Components. Expired GB1158998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6516059A NL6516059A (en) 1965-12-09 1965-12-09

Publications (1)

Publication Number Publication Date
GB1158998A true GB1158998A (en) 1969-07-23

Family

ID=19794873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5509766A Expired GB1158998A (en) 1965-12-09 1966-12-08 Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions Containing Organic Components.

Country Status (3)

Country Link
ES (1) ES334279A1 (en)
GB (1) GB1158998A (en)
NL (1) NL6516059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014884A1 (en) * 1979-02-07 1980-09-03 Bayer Antwerpen N.V. Process for working up waste water containing ammonium sulfate
CN105836949A (en) * 2016-05-05 2016-08-10 巨化集团技术中心 Treatment method for benzene extraction raffinate in caprolactam production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015946A (en) * 1968-02-08 1977-04-05 Stamicarbon N.V. Process for recovering ammonium sulphate from aqueous solutions of ammonium sulphate which contain organic compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014884A1 (en) * 1979-02-07 1980-09-03 Bayer Antwerpen N.V. Process for working up waste water containing ammonium sulfate
US4292043A (en) 1979-02-15 1981-09-29 Bayer Antwerpen Process for working up effluent containing ammonium sulphate
CN105836949A (en) * 2016-05-05 2016-08-10 巨化集团技术中心 Treatment method for benzene extraction raffinate in caprolactam production

Also Published As

Publication number Publication date
NL6516059A (en) 1967-06-12
ES334279A1 (en) 1967-11-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee