Recycling method for isopropyl alcohol wastewater

Recycling method for isopropyl alcohol wastewater

The invention relates to a recycling method for isopropyl alcohol wastewater. The method comprises the following steps that firstly, atmospheric distillation is carried out on the isopropyl alcohol wastewater so as to obtain isopropyl alcohol with the water content of 18-30%; then, the water-contain...

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Hauptverfasser: ZHANG SHAOFANG, CHEN ZHENZHONG, LI HONGJIN, CHANG SHUHAO, LIU PEIJING, ZOU YONGHAO, DONG GUANGXIA, ZHU KELONG, WEI SUILIANG
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Sprache:chi ; eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator ZHANG SHAOFANG
CHEN ZHENZHONG
LI HONGJIN
CHANG SHUHAO
LIU PEIJING
ZOU YONGHAO
DONG GUANGXIA
ZHU KELONG
WEI SUILIANG
description The invention relates to a recycling method for isopropyl alcohol wastewater. The method comprises the following steps that firstly, atmospheric distillation is carried out on the isopropyl alcohol wastewater so as to obtain isopropyl alcohol with the water content of 18-30%; then, the water-contained isopropyl alcohol and a salting-out solution are mixed at normal temperature according to a ratioof 1:3-5, standing is carried out, and then an aqueous phase and an organic phase are separated out; the aqueous phase is distilled and dehydrated; the dehydrated salting-out solution is cooled and then recycled; the organic phase is enabled to enter a drying tower for molecular sieve drying; and mixing and standing are carried out, and then solid-liquid separation is carried out so as to obtainisopropyl alcohol with the water content of 0.04-0.22%, wherein the content of the isopropyl alcohol reaches 99.7% or above. The method has the advantages of being simple, practical and high in efficiency, and the treated isop
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The method comprises the following steps that firstly, atmospheric distillation is carried out on the isopropyl alcohol wastewater so as to obtain isopropyl alcohol with the water content of 18-30%; then, the water-contained isopropyl alcohol and a salting-out solution are mixed at normal temperature according to a ratioof 1:3-5, standing is carried out, and then an aqueous phase and an organic phase are separated out; the aqueous phase is distilled and dehydrated; the dehydrated salting-out solution is cooled and then recycled; the organic phase is enabled to enter a drying tower for molecular sieve drying; and mixing and standing are carried out, and then solid-liquid separation is carried out so as to obtainisopropyl alcohol with the water content of 0.04-0.22%, wherein the content of the isopropyl alcohol reaches 99.7% or above. 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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title Recycling method for isopropyl alcohol wastewater
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