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这时就是一个负的共沸混合物。And a negative azeotrope here.

这样的恒沸溶液叫做共沸物。Such a constant-boiling solution is called an azeotrope.

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因此很容易区别共沸物和化合物。Thus, an azeotrope can readily be distinguished from a compound.

共沸物中加入氢氧化钠，分离出酚钠盐和苯乙酮。Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.

通过对二元共沸物正丙醇-水的分离考察了所构建制备气液色谱装置的分离过程。The process for separating binary azeotrope of 1-propanol-water by the apparatus was investigated.

包含2，3，3，3-四氟丙烯和氟化氢的共沸物组合物及其用途。Azeotrope compositions comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride and uses thereof.

在稳态模拟的基础上，研究了醋酸甲酯水解的反应精馏隔壁塔的控制策略。A divided wall extractive distillation column was used to separate azeotrope of 2-butanone and water.

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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.

非均相间歇共沸精馏广泛地应用于共沸物系的分离。The advantages of heterogeneous batch distillation proccess make it widely used in separation of systems with azeotrope.

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.

通过冷冻、共沸蒸馏，从多乙烯多胺混合物中分离出哌嗪。Piperazine was separated from ethylenediamine byproduct polyethylene polyamines mixture by refrigeration and azeotrope distillation.

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.

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由于苯酚和水能形成共沸物，因此不能用普通精馏方法将它们分离。Because of a azeotrope is formed between phenol and water, the phenol-water mixture can not be separated completely through common distillation method.

正己烷和乙酸乙酯形成最低共沸物，采用间歇共沸精馏方法分离回收时，共沸剂的选择和用量直接影响实验效果。In order to separate n-hexane-ethyl acetate azeotrope , batch azeotropic distillation was often used and the entrainer played a key role in the process.

丁酮与水常温下部分互溶，蒸馏时又形成共沸物，给丁酮-水的分离带来了困难。Butanone can be miscible with water under low temperature, and formed azeotrope when distillation, making the separation of butanone and water difficulty.

结果表明乙二醇与醋酸钾的混合物是分离甲乙酮-水二元恒沸物的理想萃取剂。The results show that the mixture of ethylene glycol and potassium acetate is a very effective extractant in the separation of azeotrope of methyl ethyl ketone-water.

与水萃取法相比，空气辅助挥发冷凝法分离环己烷-乙醇具有不形成新的共沸物的优点。Compared with extraction using water as extracting agent, the method of air flow aided volatilization -condensation process has the advantage of not forming a new azeotrope.

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结果表明乙二醇与醋酸钾的混合物是分离甲乙酮水二元恒沸物的理想萃取剂。The separation of azeotrope of methyl ethyl ketone water has been investigated by extractive distillation using the mixture of ethylene glycol and potassium acetate as an extractant.

将反应-萃取技术应用于PC和甲醇酯交换合成DMC反应过程，既可提高反应的平衡转化率，又可避免DMC-甲醇共沸物的形成。Incorporation of the transesterification of PC and methanol with reactive extraction technique can not only increase the equilibrium conversion but also avoid the formation of DMC-methanol azeotrope.