精馏

The acetic acid is refined by vacuum distillation and azeotropic distillation.

以醋酸的精制可利用减压精馏蒸出和共沸精馏脱水来实现。

Analog calculation of azeotropic rectification tower in the process of anhydrous alcohol was done.

对无水酒精恒沸精馏工艺中恒沸精馏塔进行模拟计算。

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。

The study on the technology and kinetics of chlorination of benzyl chloride is rather essential to the design of reactive distillation column in that the new technology about combination of reaction and distillation is used in the production of benzal chloride.

因为拟采用新型反应精馏耦合技术进行苄叉二氯的生产，研究氯化苄氯化工艺和动力学对于反应精馏塔的设计很有必要。

The extraction rectification process for benzothiophene was simulated by Aspen Plus software, by analyzing the sensitivity of column feed position, solvent ratio, reflux ratio, etc., their respective optimized values were defined, and the the temperature control proposal for sensitive plate was discussed.

用 Aspen Plus 软件模拟硫茚的萃取精馏工艺，通过对精馏塔进料位置、溶剂比和回流比等参数的灵敏度进行分析，确定了相应的优化值；并讨论了灵敏板温控方案。

ZG rotating bed consists of mono-or multi-rotors.Gas and liquid flow zigzag through the rotors countercurrently and carry out mass transfer.In ZG rotating bed,gas and liquid contact intensively,and the mass transfer rate can be increased greatly.It is a breakthrough for traditional plate and packed columns.ZGrotating bed of 1.5 meter high can achieve the separation ability which traditional plate of packed columns of 15 meters high can achieve.

该设备由一个或多个高速旋转的转子组成，气液以逆向折流方式流经转子，进行接触传质，1.5米高的ZG系列超重力精馏机相当于15米高的常用精馏塔，是对传统的板式塔、填料塔的重大突破，由国家级专家组鉴定，产品达到国际先进水平（专利号：ZL011343214）。

The recovery of dimethylbenzene and butylacetate from industrial spent solvent oil by batch distillation was studied,and the batch distillation experiment was performed with pretreated material.

研究采用间歇精馏法从工业废溶剂油中回收二甲苯和醋酸丁酯，对预处理后的原料进行了间歇精馏工艺实验研究。

The homogeneous batch distillation and hetegeneous azeotropic batch distillation were studied for separating dimethylbenzene and butylacetate from the industrial waste solvents in this article.

研究了以均相间歇精馏和非均相共沸间歇精馏从工业废溶剂油中分离二甲苯和醋酸丁酯。

The process of propylene fractionating rectifying tower was simulated by adopting Aspen Plus software and selecting SK-SOAVE model as simulation tower.

利用 Aspen Plus软件对丙烯精馏塔进行了模拟计算，选取其中的SK-SOAVE模型模拟丙烯精馏塔。

The contents of the method are as follows: addition of entainer such as benzene, hexahydrobenzene and pentene etc, rectification make entainer, alcohol and water form ternary boiling material, then boiling point difference formed and high purity alcohol finally produced.

采用向酒精溶液添加夹带剂进行精馏，使夹带剂、乙醇、水形成三元共沸物，造成沸点差，从而精馏出纯度高的酒精。

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。