Purification method of isopropanol

The invention provides a purification method of isopropanol, which comprises the following steps: A) introducing an isopropanol crude product into an acetone removal tower for rectification to obtaina preliminary purified material at the tower kettle; b) introducing the preliminarily purified materi...

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Bibliographic Details
Main Authors YAO SU, LI YUNXU, HUANG WEIGUO, LI SHENG, HUANG BIN, LI YANHU, WU WENBIN, ZHENG XIRONG, CHEN DUO'AN
Format Patent
LanguageChinese
English
Published 29.12.2020
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:The invention provides a purification method of isopropanol, which comprises the following steps: A) introducing an isopropanol crude product into an acetone removal tower for rectification to obtaina preliminary purified material at the tower kettle; b) introducing the preliminarily purified material into a dehydration tower for rectification to obtain partially dehydrated isopropanol at the tower bottom and isopropanol-water azeotrope steam at the tower top; introducing the isopropanol-water azeotrope steam into an auxiliary dehydration device for dehydration, and taking a product obtainedafter auxiliary dehydration as a raw material to be introduced into an acetone removal tower; and C) introducing the partially dehydrated isopropanol as a raw material into a product tower for rectification to obtain purified isopropanol. Compared with the prior art, the isopropanol purification process disclosed by the invention has the advantages of simple separation process, good product quality (no azeotropic agent pol
Bibliography:Application Number: CN202011155905