Separation of tetrahydrofuran-ethanol binary azeotrope by extractive distillation

The method to separate the product was discussed finally. The n-hexane azeotrope was used to purify the triethoxysilane and a good result was got.

同时对产物的分离进行了研究，采用正己烷共沸精馏提纯三乙氧基硅烷，得到了较好的结果。

So if I have this special mixture here, of A and B, at this point here, I form what's called an azeotrope.

如果我们有这样子特殊的A和B的混合物，在这个点，我们得到了所谓的共沸混合物。

The screening indexes of extractant include relative volatility, molecular weight, freezing point, boiling point, azeotrope judgement and molecule stability.

本文提出以相对挥发度、相对分子摩尔质量、熔点、沸点、共沸和稳定判断等为筛选指标进行分子设计；

The crystal of Malachite is more in the precursors dehydrated by azeotrope distillation than by normal heating.

共沸蒸馏脱水法比加热脱水法制备的前驱体含有较多的孔雀石相。

And a negative azeotrope here.

这时就是一个负的共沸混合物。

The dry furfural can be obtained and the composition of the tops was close to the composition of furfural water azeotrope.

通过对糠醛干燥塔中热醛汽流量的控制，可获得干燥糠醛，并使塔顶馏出物的组成接近糠醛水共沸组成；

Study on Structures and Properties of Fatty Alcohols with Quantum-chemical Descriptors and Topological Index benzene-methanol azeotrope

基于量化参数和拓扑指数的脂肪醇沸点QSPR研究苯-甲醇共沸混合物

The alcohol treatment mechanism is that the invaded water can be removed by decreasing surface tension and forming low boiling point azeotrope.

这是因为醇可以减小表面张力，与水或水和烃形成低沸点共沸物，将侵入的水排出。

The separation of azeotrope formed by methanol and DMC has been investigated by extractive distillation.

采用萃取精馏法对甲醇-碳酸二甲酯二元恒沸物进行了分离；

Prediction of binary azeotrope at superatmospheric pressures by UNIFAC method

UNIFAC基团贡献法预测加压下的二元共沸点

Study on the Separation of Azeotrope of Methyl Ethyl Ketone-water System Using Extractive Distillation with Salt

加盐萃取精馏分离甲乙酮水恒沸物的研究

Separation of Methanol-Acetone Binary Azeotrope by Extractive Distillation

萃取精馏分离甲醇和丙酮共沸物

On this base, the suggestion is put forward on optimization of azeotrope tower operation adjustment to reduce the operation cost.

在此基础上，提出了降低运行费用的共沸塔操作调整的优化方向。

Study of Fixation of Disperse Dyes en Polyester with Azeotrope of Benzyl Alcohol/ Water

分散染料用苯甲醇/水共沸蒸汽固色的研究

A Experimental Research for Separating an Azeotrope of Methyl Acetate and Methanol by Extractive Distillation

萃取精馏分离甲醇与醋酸甲酯的实验研究

Molecular Design of Extractant for Extractive Distillation of 1-Butanol-Butyl Acetate Azeotrope System

丁醇-醋酸丁酯共沸物系萃取精馏萃取剂的分子设计

Study on Separation of Azeotrope

共沸物系分离的研究

It forms an azeotrope with water at atmospheric condition, which cannot be separated by conventional distillation.

常压下与水形成共沸物，用普通精馏无法得到高纯度的异丙醇产品。

The Preparation of PVA Vapor Permeation Membrane Separating Ethanol-water Closed Azeotrope

分离乙醇水近共沸物PVA蒸汽渗透膜的制备

Extractive distillation is mainly used to separate azeotrope and components of narrow boiling range.

萃取精馏主要用于分离共沸物和近沸程物系。