精馏

We determined the relation of the temperature and the content of mesitylene to search the optimium operating condition, which assured the content and the yield of mesitylene high. After pre-treated, the raw material contained only the composition of mesitylene, o-ethyl-methylbenzene and 1,2,4-trimethylbenzene.

本文采用间歇精馏法进行预处理；通过测定馏出温度与组成关系曲线，确定最佳操作条件，以保证均三甲苯的含量及收率较高；预处理后的原料主要含均三甲苯、邻甲乙苯及偏三甲苯。

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate b...

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

It is used in the calculation of the catalytic distillation process of methyl acetate hydrolysis with satisfactory results.

对于催化精馏过程，由于反应的存在，模型方程的非线性程度更高，用三对角矩阵法更不易收敛。

This invention publishes a preparation method for methyl acetate and a reaction distillation column with combined trapezoid spray trays.

本发明公开了一种乙酸甲酯的制备方法和具有立体传质塔板的反应精馏塔。

In this paper, the processes of methyl acetate recycling were reviewed; the method of separation methyl acetate-methanol by salt effect distillation was proposed.

本文对现行醋酸甲酯的几种回收工艺进行了评述，提出了加盐萃取精馏分离醋酸甲酯-甲醇的方法。

The purpose of this thesis is to apply the catalytic distillation technique to the hydrolysis of methyl acetate by breaking through the limitation of chemical equilibrium for getting high conversion of hydrolysis.

本论文的目的是将催化精馏技术应用于醋酸甲酯水解反应过程，以期突破化学平衡的限制而获得较高的水解转化率。

It was concluded from the calculation that the results were satisfactory and the ratio of reflux to methyl acetate feed had less influence on the conversion of methyl acetate. It is good guide to the pilot experiment, and can provide the basis for the industrial design.

通过模拟计算得出了增大回流进料比不能有效强化醋酸甲酯水解的催化精馏过程的结论，为中试过程提供了有效的指导，也给工业化提供了依据。

Hydrolysis process of methyl acetate with catalytic distillation can be simulated successfully by a differential model.

用微分模型对醋酸甲酯催化精馏水解实验进行过程模拟。

The synthesis of methyl tert-butyl ether is an important process in industrial production.

甲基叔丁基醚工业生产是典型的催化精馏过程。

For the methylal synthesis by fluidized catalytic distillation, an mathematical model of equilibrium stage was set up on some assumptions.

针对甲缩醛合成流化催化精馏过程，在合理假设的条件下，建立了平衡级数学模型。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。