精馏

It is important to study the influence of salt on vapor - liquid equilibrium for the extractive distillation with addition of salt.

研究盐对气液平衡的影响，对开发加盐萃取精馏技术非常重要。

Without any superstructures of distillation system, the feasible region could be looked for automatically.

在不必给定精馏系统超结构的情况下，能够完成可行域的自动搜寻。

With regard to the practical problems of estimating product quality on-line in hydrocracking fractionator, the soft-sensing engineering implementation strategy, which combines several soft sensors by weights for product quality estimating, is proposed to improve robustness of on-line estimation.

运用此控制策略对Shell公司重油常压塔和Wood-Berry精馏塔进行了仿真研究，通过与直接针对实际对象的基于RNNARX模型的多变量约束预测控制策略的仿真结果相比较，显示了PLS-MPC控制策略的有效性。

Through process simulation and optimization, a double-tower process with depropanizer and propane fractionator and without deethanizer is presented for gas fractionation as well as optimized process conditions of different units.

通过装置的流程模拟和优化，提出了气体分馏装置新双塔流程(无脱乙烷塔，只有脱丙烷塔和丙烯精馏塔)，以及各装置的优化工艺条件。

By using efficient padding, fusel oil was exactly distilled twice after being preliminarily dealt with. And then we got highly pure 2-methyl -1-butanol and--2-methyl -1-butanol.

采用高效填料，通过对预处理后的杂醇油进行两次精密精馏，得到了高纯度的2-甲基-1-丁醇和--2-甲基-1-丁醇。

Based on the research of the multi-component refinery process, mechanism model and MESH equations are given. The bubble-point method and tridiagonal matrix method which is solved by Gaussian elimination algorithm are proposed.

本文针对多元精馏过程的常压塔进行了分析和研究，建立了平衡级机理模型和MESH方程组，提出采用三对角矩阵法和泡点法相结合作为模型求解的解决方案。

The mixture produced fromβ-pinene mainly containing geraniol and nerol,whose difference in boiling-point is only 2 C. They were separated by using the omethod of vacuum batch distillation and flash distillation with additives.

以β－蒎烯路线生产的香叶醇和橙花醇混合醇产品为原料，采用减压间歇精馏和闪蒸方法，通过添加络合剂提高产品的质量，实现了沸点差仅为 2℃的橙花醇和香叶醇的分离。

This paper introduce an Excel-based graphic solution to the theoretical plate numbers of a rectification column and a VBA program.

介绍了用Excel图解法求精馏塔理论塔板数，并给出了VBA程序。

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。

This method can be used to design RD system of over four components, consequently RD graphical design method is developed.

应用本文方法可以进行多于四组分体系的设计计算，从而发展了反应精馏的图解设计方法。

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。