Method for synthesizing glycidyl ether by recovering polyol from diluent wastewater

The invention discloses a method for synthesizing glycidyl ether by recovering polyol from wastewater of diluent production, which comprises the following steps: pretreating the wastewater of epoxy diluent production to obtain concentrated polyol with the hydroxyl value of 600-800gKOH/mo; adding exc...

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Bibliographic Details
Main Authors ZHU XINBAO, WU WENWEN, WANG DANYA, CHENG ZHENSHUO, ZHOU LEQUN, WANG WEIJIAN
Format Patent
LanguageChinese
English
Published 16.04.2024
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a method for synthesizing glycidyl ether by recovering polyol from wastewater of diluent production, which comprises the following steps: pretreating the wastewater of epoxy diluent production to obtain concentrated polyol with the hydroxyl value of 600-800gKOH/mo; adding excessive epoxy chloropropane into the concentrated polyol; salt and water are generated in the reaction process of the epoxy chloropropane. Continuously dropwise adding a 32% NaOH solution, and continuously removing moisture; after the reaction is completed, filtering to remove salt, neutralizing filtrate to be neutral, and finally distilling out epoxy chloropropane under negative pressure to obtain the water-soluble epoxy resin. According to the invention, resource utilization of waste is realized, waste is turned into wealth, the problem of waste treatment is solved, the production bottleneck of the diluent is eliminated, the economic benefit of enterprises is improved, green production is realized, and the epoxy d
Bibliography:Application Number: CN202311795579