精馏

Ethanolamine series are easy to be separated by distillation technology because of their high boiling point difference. According to this feature, an optimized distillation process with recycling streams and sidedraws was presented in this study.

不同乙醇胺产品之间的沸点差较大，从精馏的角度来说易于分离，利用这一特点，本文开发出了带循环物流、侧线出料的精馏系统新流程。

The optimization method is genetic algorithm based on exterior point penalty function method.

采用基于外点罚函数法的遗传算法，对精馏塔优化问题进行求解，获得精馏塔的最优操作状态。

The solvent selection and batch extractive distillation with a middle vessel were studied by theoretical analysis and experiment.

本文通过理论分析和实验相结合的方法，主要研究了萃取精馏溶剂的选择以及带有中间储罐塔的间歇萃取精馏过程的操作性能和设计计算问题。

Although batch distillation has been dealt with more than 100 years, the design methods developed to date have some disadvantages, most of which are derived from FUG method for continuous distillation or from experiences under the assumption of no holdup and no slop cuts.

多组元分批精馏过程和设计方法的研究分批精馏

According to the rectification coefficient of the isoamyl alcohol,it is suitable for the fusel oil to be extracted in the layer of 42% alcohol concentration in the rectification column.

由异戊醇的精馏系数理解，在酒精蒸馏过程中，从精馏塔酒精浓度42％处提杂醇油最适宜。

The ethanol from biomass removes impurities, for example carbon dioxide, fusel oil ect, in ethanol distillation process, and then goes into the reactors for dehydration reaction in gaseous state after preheating vaporization.

由生物质制得的乙醇在精馏段除去二氧化碳、杂醇油等杂质，精馏后的乙醇经过预热汽化在气相状态下进入反应器进行脱水反应。

Automatic differentiation and implicit function differentiation rule were used to calculate the precise absolute and relative sensitivity coefficients, with no truncation error introduced.

提出一种基于自动微分和隐函数求导法则的精馏塔优化计算灵敏度分析方法，可以求出精确的、无截断误差的灵敏度系数，以反映精馏塔模型中各种不确定因素变化所引起的改变和影响。

So the process is offered using isomerization with separation. 1,2,4-trimethylbenzen is converted to 1,3,5-trimethylbenzen by isomerization. By means of precise distillation mesitylene is separated from products of isomerization as much as possible with high purity. 1,2,4-trimethylbenzen is recycled, at last , more mesitylene is produced and the productive cost is much lower .

为此，本文将催化异构化技术和精密精馏技术结合起来，通过异构化将偏三甲苯转化为均三甲苯，通过精密精馏技术将产物中均三甲苯最大限度的分离出来，得到很高的产品纯度，同时偏三甲苯循环使用，提高了均三甲苯的产量，降低了均三甲苯的生产成本。

As the early work to build the new art of catalytic distillation hydrolysis of methyl acetate, a non-equilibrium rate model and the calculation method based on it was established.

作为开发醋酸甲酯水解新工艺的前期工作，本文针对醋酸甲酯水解催化反应精馏新工艺，建立了非平衡级反应精馏速率模型和过程模拟的计算方法。

The new technology of hydrolysis of methyl acetate reaction can simplify procedure and improve operational behavior.

开发了一种适用于醋酸甲酯水解的催化反应精馏塔，具有催化剂装填量大、不易泄漏、更换方便等优点，通过实验验证，发现其反应过程与分离过程耦合良好，易于调整，开发了醋酸甲酯反应精馏水解新工艺，简化了流程，提高了过程的可操作性。

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。