精馏

In this paper,a new method of measuring liquid three dimensional flow velocity by rotaining the probe in the plane was submitted basing elaborate analyzing of hot film anemometer.

本文针对热膜流速仪元件的工作原理提出了在平面旋转测量液体三维流速的方法，并测量了大型精馏塔板液相单相三维流场。

The axial profile of temperature and concentration in the column is calculated.

得到了催化精馏塔内的温度及液相组成分布。

In this paper, a process of pressure-swing distillation for separation of HFC-245fa and HF azeotrope was simulated by Aspen Plus.

在计算机模拟和分析的基础上，研究了变压精馏分离五氟丙烷－氟化氢的工艺流程。

But the mixture of these two components can not be separated by conventional distillation, because they form azeotrope at atmospheric pressure.

但两者在常压下形成共沸物，应用普通精馏方法难以对其进行有效的分离。

It was used to simulate the catalytic distillation column of methyl acetate and methanol azeotrope hydrolysis combined with the macro-dynamic equation of methyl acetate hydrolysis.

应用该方法结合实验测定的醋酸甲酯催化水解动力学数据对醋酸甲酯与甲醇共沸物催化精馏水解小试过程进行了模拟计算，得到了满意的结果。

The result showed that every azeotrope was homogeneous and sensitive to pressure, which means a significant change in the azeotropic composition and allows the recovery of feed components without adding a separating agent.

结果显示：常压下，5个碳以下的某一腈类物质1与沸点在±1 t 20℃范围内的羟基在1号碳位上的直链醇类会形成均相共沸物，且其共沸组成随压力变化敏感，理论上可用变压精馏进行分离。

Meanwhile, experiment with the ternary mixture of methanol, butyl methyl ether and 1-chlorobytane showed that the system was not ternary azeotrope and can be separated by combination of extractive and rectification using water as extractive solvent.

针对甲醇、甲基正丁醚和正氯丁烷三元混合物，研究了该物系的性质，得到该物系不是三元共沸物的结论，并用水作萃取剂，通过实验验证了利用萃取和精馏耦合的方法分离该物系的可行性。

Former Shanxi saves chemical hall hall to grow Bai Yuxiang hit the mark with a single comment: This belongs to genuine coal Jiao Shen to machine industrial catenary outspread device, market offer obtain a country to invent patent ' craft of rectify of crude benzole extraction ' and ' production of law of cooking benzene oxidation arranges anhydride ' technology of core of two big own innovation and 3 worlds the first.

原山西省化工厅厅长白玉祥一语道破：这套属于地地道道的煤焦深加工产业链延伸装置，集纳了获得国家发明专利的'粗苯萃取精馏工艺'和'焦化苯氧化法生产偏苯三酸酐'两大自主创新核心技术和3项世界第一。

After enriched by flash, benzoic acid-containing fraction was obtained below 210 ℃ and benzyl benzoate -fluorenone-containing fraction was between 220 and 260 ℃,then these fractions were separated by vacuum distillation respectively.

废料通过闪蒸，在210℃以下得到了富集苯甲酸馏分，在220—260℃之间得到了富集苯甲酸苄酯和芴酮馏分；之后对各馏分进行高真空减压精馏，得到了苯甲酸、苯甲酸苄酯和芴酮等产品，纯度分别可达95%，91%和92%。

The fraction of benzyl benzoate and fluorenone were enriched from benzoic acid residua by flash distillation,then separated by vacuum batch distillation,so the recovery of benzoic acid residua was implemented.

依据相关文献确定了通过闪蒸法富集苯甲酸釜残液中的苯甲酸苄酯和芴酮馏分，其后减压间歇精馏分离富集馏分，实现了苯甲酸釜残液的回收利用。

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。