Method for extracting cyclohexanol from cyclohexanone waste liquid by using composite extractant

The invention discloses a method for extracting cyclohexanol from cyclohexanone waste liquid by using a composite extractant. The method comprises steps of atmospheric simple distillation and vacuum extractive distillation; wherein in vacuum extractive distillation, the extractant is a two-component...

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Bibliographic Details
Main Authors LIU ZHENGWEI, YANG ZHAOHUI, LIU MEI, GUO XUEYANG, YANG RONGHUA
Format Patent
LanguageEnglish
Published 09.12.2015
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a method for extracting cyclohexanol from cyclohexanone waste liquid by using a composite extractant. The method comprises steps of atmospheric simple distillation and vacuum extractive distillation; wherein in vacuum extractive distillation, the extractant is a two-component extractant composed of triglycol and polyethylene glycol (PEG-300), the weight ratio of triglycol: polyethylene glycol (PEG-300): cyclohexanone waste liquid is 1:0.8-1.2:1.4-3.1; the cyclohexanol yield is more than 92%, and the purity of prepared cyclohexanol finished product is more than 99.3%.
Bibliography:Application Number: CN20151471917