挥发度

Separation ; extraction distillation ; relative volatility ; benzol chloride

分离；萃取蒸馏；相对挥发度；氯甲苯

The comparison of operating time of dynamic accumulation cyclic operation with the optimal constant reflux ratio operation was also made in this paper.

为了确定动态累积循环操作的适宜应用范围，本文比较了动态累积循环操作与优化分段恒回流比操作，讨论了进料浓度、相对挥发度、理论级数、进料量对两种操作方式的影响。

N-methylacetamide was used as entrainer in separating acetic acid from water with extractive distillation ,and the interaction mechanism in this process was studied by using the density functional theory.

文献[1-4]认为萃取精馏分离乙酸水溶液过程中萃取剂与乙酸之间的氢键作用改变了溶液中乙酸和水的活度系数关系，从而改变了两者之间的相对挥发度，使得水和乙酸的分离变得相对容易。

The components of the system being studied are divided into two groups according to degree of volatility, named quasi-heavy component and quasi-light component, then through solving the vapor-liquid equilibrium data of the system, quasi-binary method can be applied to carry out RD graphical design calculation.

把待研究体系的多个组分按照挥发度高低划分为拟重和拟轻两个组分，通过求解体系的汽液平衡数据，可采用拟二元方法进行反应精馏塔的图解设计计算。

Both theoretical and experimental investigations revealed that maldistribution has an adverse effect on column performance.

Huber及Hiltbrunner曾提出过计算模型，并研究了塔在全回流下操作及相对挥发度接近于1时的情况。

It is also shown that the differences between the models increase with the increases of feed composition, relative volatility and number of cycle.

本文还分析了多种操作参数对模型间计算结果的影响，随着相对挥发度增加、进料浓度降低以及循环次数增加，模型计算结果之间的差别增大。

The volatilization of two pesticide which are most commonly used in the North China plain: dichlorvos, atrazine was studied.

挥发度是对一种农药进入大气数量的决定因素，在研究农药对大气污染时，了解农药的挥发度十分重要。

Through the calculation of the relative volatility under different solvents and conditions for some azeotropic systems, optimum solvents have been chosen, and the influences of temperature and ratio of solvent on relative volatility were discussed.

通过对甲醇－乙酸甲酯共沸体系在不同萃取剂和不同萃取条件下相对挥发度的计算，选择出适宜的萃取剂，并讨论了温度和溶剂比对相对挥发度的影响。

The distillation of acetic acid,water and butyl acetate system was a gas-liquid-liquid three phase azeotropic distillation process.

醋酸/水体系相对挥发度不大，是典型的非理想体系，醋酸不仅在液相具有强的

In order to achieve a rapid and accurate selection for extractive distillation solvent, and to acquire 1,2,3-trimethylbenzene with high purity from solvent oil via extractive distillation, the UNIFAC model was used to calculate the relative volatility of 1,2,3-trimethylbenzene to indane (the mass ratio of 1,2,3-trimethylbenzene to indane is 4∶1) in five different solvents, acetophenone, di-2-octylhexyl phthalate, glycol, dimethyl sulfoxide,sulfolane at 17.47 kPa.

为了快速准确地选择萃取精馏溶剂，由190#溶剂油萃取精馏获取高纯度连三甲苯，运用UNIFAC模型，计算了质量比为4∶1的连三甲苯-茚满体系在苯乙酮、乙二醇、邻苯二甲酸二辛酯、二甲基亚砜和环丁砜5种溶剂中在17.47 kPa下的相对挥发度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。