共沸的

It is a classical chemical process for production of methyl acetate. But by the limits of. the formation of azeotropes in the process, we cant obtain hign purity methyl acetate by normal unit operation.

醋酸甲酯的制备是一种经典的化学过程，但由于反应过程中形成共沸物的限制，通过常规的单元操作不能够得到高纯度的醋酸甲酯。

The performance of TEDAMAX-01, a kind of catalyst with the topological structure of high silicious zeolite MFI, in catalyzing the reaction of monoethanolamine to triethylenediamine has been evaluated by a small fixed-bed reactor under the ambient pressure and carrier gas free conditions.

在常压和无载气条件下，使一乙醇胺与18%质量分数的NH3及50%质量分数的H2O共进料反应，用小型固定床反应器评价了一种MFI型高硅沸石催化剂 TEDAMAX-01催化一乙醇胺合成三乙烯二胺的性能。

The purity of Monochloroacetone can be reached to 99% by azeotropic distillation in the ratio of water to the mixture of Monochloroacetone and 1,1-dichloroacetone 1:1.

实验确定共沸剂水的加入量与氯丙酮混合液的比例为1：1时，能达到良好的分离效果，可得到纯度99％以上的一氯丙酮。

As there exists azeotropic composition for high concentration ethanol/water mixture, the separation of ethanol/water based on distillation and ethanol dehydration consume a major part of energy in an ethanol production process.

具有较高乙醇浓度的乙醇/水混合物存在共沸组成，因此基于精馏的乙醇-水的分离及脱水在乙醇工业生产的能耗中占有很大的比例。

As can be seen in Fig. 5, dipropyl ether will be recovered in the distillate using 1-pentanol, N,N-dimethylformamide and 2-ethoxyethanol as entrainers and butyl propionate is the only entrainer studied that inverts the volatility of the azeotropic mixture.

从图 5可以看出，使用1-戊醇、N，N-二甲基甲酰胺和2-乙氧基乙醇作为共溶剂时二丙醚将在馏分中回收，丙酸丁酯是唯一与共沸混合物挥发性相反的共溶剂。

In order to minimize the pollution of the environment with waste acids and/or waste acidic salt solution, following measures were taken:(1) Instead of using excess sulfuric acid, sulfonation reaction was carried out in the presence of excess toluene and the water produced during the sulphonation was removed by azeotropic distillation.

在CLT酸生产中，为了使废酸和酸性废盐水对环境的污染减少到最低程度，采取了如下的措施：(1)与使用过量硫酸相反，磺化反应是在过量甲苯的存在下进行，同时用共沸蒸馏方法移出了磺化过程中产生的水。

Extractive distillation and liquid-liquid extraction are effective separation processes to deal with the separation of close boiling compounds or azeotropes systems. The selection of appropriate solvents is the key.

化工生产中常遇到欲分离组分之间的相对挥发度接近1或形成共沸物的难分离物系，萃取精馏和液液萃取是常用且有效的方法，其中萃取剂的选择是关键。

DM is mainly used as high-boiling point solvent for printing ink, dyestuff, resin, cellulose and painting.

二乙二醇丁醚醋酸酯有着十分高的沸点，主要用于高温烤瓷以及印刷油墨的高沸点溶剂，也用作乳胶漆的助聚结剂；由于该溶剂挥发速度很慢，在水中溶解度低，所以可作为丝网印刷油墨的溶剂，以及聚苯乙烯涂料印花釉的溶剂；也可作为共沸剂用于醇与酮的分离。

Rubber —material that is capable of recovering from large deformations quickly and forcibly, and can be, or already is, modified to a state in which it is essentially insoluble in boiling solvent, such as benzene, methyl ethyl ketone, or ethanol-toluene azeotrope.

以上就是该标准对于橡胶的定义。从这个定义包含两层含义：（1）是说明了橡胶材料的力学特征——能够从大变形迅速而强烈的回复；（2）是说明了橡胶可以被改性到不溶解、可溶胀的状态——能够被改性至一种不能被沸腾溶剂（如苯、甲基乙基酮、乙醇-甲苯共沸物）溶解的状态。

The influence of leakage at exit of condenser, vapor - liquid separator and evaporator on the refrigerant composition is bigger.

以非共沸混合工质两相区的等温泄漏为基础，分析了在自复叠循环装置中各部件的泄漏对工质组成的影响，其中发生在冷凝器出口处、气液分离器和蒸发器出口处的泄漏对工质组成影响较大。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。