共沸混合物

All these compounds were characterized by azeotrope and elemental analysis, as well as by spectral measurements.

对所制成的衍生物均采用了共沸混合物分析、元素分析和光谱测定等进行了表征。

In the end, the extractive distillation method was applied to separate and purify the binary azeotrope mixture, methanol-dimethyl carbonate. The isoamyl acetate was used as extractant and the two tower system was introduced to continuous extractive distillation operation. The results show a better separation effect.

最后采用萃取精馏的方法，对甲醇-碳酸二甲酯的二元共沸混合物进行了分离提纯研究，以毒性较低的乙酸异戊酯为萃取剂，采用两塔连续萃取精馏操作，结果表明，分离效果比较理想。

Fig. 5 is the relative volatility map of the binary azeotropic mixture with the different solvents studied.

图 5是不同溶剂组成的二元共沸混合物的相对挥发性图谱。

The separation of azeotropic mixtures is a common task in the chemical industry.

共沸混合物的分离是化学工业中常见的作业，因其共沸点的存在造成在分离上比一般混合物更加困难。

Only the pressure sensitive azeotropic mixtures can be used in the PSD economically.

在此所使用的二元共沸混合物系统，为常见的二元共沸混合物系统。

From the azeotropic mixture from the top of the tower the absolute ethanol is prepared and returned to the oxidation and carbonylation system.

塔顶出来的共沸混合物按照工业乙醇脱水方法制备的无水乙醇返回氧化羰化合成系统。

The pressure swing distillation is an effective separation of binary azeotropic mixtures, and it has the advantages of simplicity, low energy and low cost.

而变压蒸馏分离系统(Pressure Swing Distillation，PSD)是一种可以有效的分离二元共沸混合物的技术，且具有简易性、低耗能及低成本花费等优点[1]。

The solvent selection for extractive distillation and separation of azeotropic mixtures by batch extractive distillation were studied via theoretical analysis and the experiment.

本文通过理论分析和实验相结合的方法，主要研究了共沸物萃取精馏溶剂的选择以及共沸混合物的间歇萃取精馏工艺。

In order to carry out the separation of the azeotropic mixture dipropyl ether + 1-propyl alcohol by extractive distillation, we are studied the influence on the phase equilibria behavior four different solvent: 1-pentanol [2], butyl propionate [3], N,Ndimethylformamide [4] and 2-ethoxyethanol.

为了用萃取性蒸馏法分离二丙醚和1－丙醇组成的共沸混合物，我们正在研究4种不同溶剂对相平衡行为的影响：1-戊醇[2]、丙酸丁酯[3]、N，N－二甲基甲酰胺[4]和2-乙氧基乙醇。

Pervaporation can also be used to separate organic solution, break azeotropes and dehydrate solvents, which are difficult to do through distillation or other means.

过蒸汽化也可以被用于分离有机溶液，破坏共沸混合物和脱水溶剂，而这些通过蒸馏或者其他方法很难完成的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。