这时就是一个负的共沸混合物。
缩酮制备时，采用甲苯为共沸剂；
这样的恒沸溶液叫做共沸物。
研究乙醇、水共沸精馏的热量集成流程。
A heat integrated ethanolwater azeotropic distillation flowsheet is studied.
所以我们要知道哪些东西会形成共沸混合物。
在磺化反应中，采用共沸除水硫酸磺化法。
In the reaction of sulfonation, the azeotropic water removing, sulfuric acid was used as sulfonating agent.
结论：改后共沸结晶条件优于原共沸晶条件。
Conclusion: This azeotropic crystallizing condition is better than old one.
本模型对均相间歇共沸精馏有一定的指导意义。
The model was useful for the operation of batch distillation.
关于共沸混合物，有问题吗？，接着我们要讲依数性？
Any questions on azeotropes, before we get to colligative properties?
本文介绍了应用非共沸混合物的小型制冷系统的特性。
In this paper, the performances characteristics of small refrigerating system using non azeotropic mixtures are introduced.
与水共沸的物质的精制相当困难，一般工艺流程都较长。
It's quite difficult to purify the substance co-boiling with water.
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。
On this base, the suggestion is put forward on optimization of azeotrope tower operation adjustment to reduce the operation cost.
用模型参数推算了常压下水三聚甲醛系统的共沸组成和共沸温度。
The azeotropic temperature and compositions of the trioxane-water system under atmospheric pressure were also predicted.
最后进行了工业间歇共沸精馏分离正己烷和乙酸乙酯的实验研究。
Finally the separation of n-hexane and ethyl acetate was tested with an industrial column in a way of batch azeotropic distillation.
研究了近共沸混合制冷剂充灌量与冰箱性能及运行参数间的关系。
The experimental investigation on the relations between near-azeotropic mixture refrigerant quantity and refrigerator performance and operating parameters are presented.
一种带共沸精馏分水的新型酯化反应实验装置用于合成乙酸异戊酯。
A new esterification equipment with a water separator by azeotropic rectification was used to the synthetic reaction of isopentyl acetate.
通过共沸精馏减少产品质量指标波动，优化单元操作，确保更小消耗。
By azeotropic rectification the indexes fluctuate of product quality are decreased, the unit operations are optimized, the consumption is lessened.
结果表明，部分冷凝工艺和回流段无水乙醇共沸精馏流程节能效果显著。
Both the partial condensation technique and the anhydrous ethanol reflux azeotropic distillation technique show great advantage in energy saving according to the simulation results.
本文对该二种方法进行了计算比较，认为采用共沸精馏的方法更为合适。
Computation and comparison have been made by using these two methods, and as a result, azeotropic distillation is more suitable to this system.
综述了碳酸二甲酯-甲醇二元共沸物汽液平衡和分离方法的最新研究进展。
Vapor-liquid equilibria and separation of methanol-dimethyl carbonate azeotrope are(reviewed) in this paper.
实验测量了新型共沸混合工质HC170/HFC23的池核沸腾传热特性。
The heat transfer data of nucleate pool boiling on a smooth flat surface were measured in HC170/HFC23 system.
在存在共沸点的条件下，利用活度系数关联式， 通过泡点计算求出共沸条件。
The possibility of unique azeotropy or polyazeotropy in a liquid mixture can be predicted using activity coefficient models in terms of boiling point calculation.
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。
So if I have this special mixture here, of A and B, at this point here, I form what's called an 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 alcohol treatment mechanism is that the invaded water can be removed by decreasing surface tension and forming low boiling point azeotrope.
由于热解油中物质的复杂性及共沸现象的存在，给热解油的分离提纯带来了很大的困难。
Because the complexity and mutual boiling existence of pyrolysis oil, it bring out much difficult to separate and purify pyrolysis oil.
介绍了以甲醇钠甲醇溶液与氯仿为原料，采用共沸蒸馏法制备原甲酸三甲酯的改进工艺。
An improved method of synthesizing trimethyl orthoformate through azeotropic distillation by taking sodium methoxide in methanol and chloroform as raw materials has been presented by the author.
介绍了以甲醇钠甲醇溶液与氯仿为原料，采用共沸蒸馏法制备原甲酸三甲酯的改进工艺。
An improved method of synthesizing trimethyl orthoformate through azeotropic distillation by taking sodium methoxide in methanol and chloroform as raw materials has been presented by the author.
应用推荐