1)  azeotropic dewatering
共沸脱水
1.
An improved method for synthesis of 5 - nitroso - 2,4,6 - triaminopyrimidine by using dimethyl sulfox-ide and xylene as mixed solvents for azeotropic dewatering was developed.
研究了一种合成5-亚硝基-2,4,6-三氨基嘧啶的改进方法,该法采用二甲基亚砜和二甲苯作为混合溶剂共沸脱水,克服了单一极性溶剂脱水困难的缺点。
2)  azeotropic dehydration
共沸脱水法
1.
Study on a novel technique of azeotropic dehydration process for drying methomyl oxime;
共沸脱水法干燥灭多威肟新技术研究
3)  sulfonation with azeotropic dehydration
共沸脱水磺化
4)  azeotropic
共沸
1.
The homogeneous batch distillation and hetegeneous azeotropic batch distillation were studied for separating dimethylbenzene and butylacetate from the industrial waste solvents in this article.
研究了以均相间歇精馏和非均相共沸间歇精馏从工业废溶剂油中分离二甲苯和醋酸丁酯。
5)  co-boiling
共沸
1.
Reaction temperature is determined by co-boiling point while using organic solvent.
2;使用有机溶剂时,反应温度与共沸点有关。
2.
It's quite difficult to purify the substance co-boiling with water.
与水共沸的物质的精制相当困难,一般工艺流程都较长。
6)  azeotrope
共沸
1.
A computer-aided molecular design(CAMD)method based on genetic algorithm was proposed to design extractant molecule for extractive distillation of 1-butanol-butyl acetate azeotrope system.
基于遗传算法思想提出了一种有效的分子设计方法,针对丁醇-醋酸丁酯共沸物系的萃取精馏萃取剂选择问题进行了分子设计,经比较筛选出塔顶产物分别是醋酸丁酯和丁醇时的较佳萃取剂为1,3-丙二醇和硝基丁烷。
2.
Objective:Improve aleotropic crystallizing condition of penicilling and increase sylvite yield Method Azeotrope tower is added to W type bottom,Improved vacuum—degree and adjusted agitating rolling figure.
目的:改进青霉素共沸结晶条件、提高钾盐收率。
3.
The variation of binary azeotropes with pressure were studied.
OkPa压力下的加压共沸点。
参考词条
补充资料:共沸脱水磺化
分子式:
CAS号:

性质:工业上简称气相磺化。用过量的过热芳烃蒸气通入120~180℃浓硫酸中,由于共沸,使未反应的芳烃蒸气带出磺化反应生成的水,使磺化剂的浓度不致于下降太多,有利于磺化反应的继续进行。是提高硫酸利用率的一种好方法。芳烃蒸气与水蒸气的混合物经冷凝分离后可回收芳烃,循环使用。这种磺化方法只适用于沸点较低、易挥发的芳烃,如苯、甲苯的磺化。

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