GB1160580A - 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
GB1160580A
GB1160580A GB5509866A GB5509866A GB1160580A GB 1160580 A GB1160580 A GB 1160580A GB 5509866 A GB5509866 A GB 5509866A GB 5509866 A GB5509866 A GB 5509866A GB 1160580 A GB1160580 A GB 1160580A
Authority
GB
United Kingdom
Prior art keywords
ammonium sulfate
organic components
recovery
containing organic
solutions containing
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
GB5509866A
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 GB1160580A publication Critical patent/GB1160580A/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)
  • Extraction Or Liquid Replacement (AREA)

Abstract

1,160,580. Ammonium sulphate. STAMICARBON N.V. 8 Dec., 1966 [9 Dec., 1965], No. 55098/66. Heading C1A. In the preparation of caprolactam from cyclohexanone oxime in a sulphuric acid medium the crude reaction product is neutralized with ammonia and the crude lactam oil, which separates from the aqueous phase, is removed. The aqueous phase which contains less than 25 wt. % based on the sulphate, of organic components which are solid at room temperature is evaporated to dryness, heated for at least one hour at 175-250‹ C., and the residue extracted with water to provide an aqueous solution from which ammonium sulphate is crystallized.
GB5509866A 1965-12-09 1966-12-08 Process for the Recovery of Ammonium Sulfate from Aqueous Ammonium Sulfate Solutions containing Organic Components Expired GB1160580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6516058A NL6516058A (en) 1965-12-09 1965-12-09

Publications (1)

Publication Number Publication Date
GB1160580A true GB1160580A (en) 1969-08-06

Family

ID=19794872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5509866A Expired GB1160580A (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) ES334280A1 (en)
GB (1) GB1160580A (en)
NL (1) NL6516058A (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
EP0459197A1 (en) * 1990-05-24 1991-12-04 Bayer Ag Process for the purification of ammonium sulphate solutions

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
EP0459197A1 (en) * 1990-05-24 1991-12-04 Bayer Ag Process for the purification of ammonium sulphate solutions

Also Published As

Publication number Publication date
ES334280A1 (en) 1967-11-01
NL6516058A (en) 1967-06-12

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Legal Events

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