精馏的

The traditional separation and purification process of levulinic acid was consisted of solvent extraction and high vaccumn distillation, which was low in product recovery, high in energy consumption and complex in process operation.

传统的乙酰丙酸分离提取工艺以有机溶剂萃取和真空精馏为核心，乙酰丙酸的回收率低、能耗高、工艺复杂，成了制约工业化生产的主要因素。

Simulation and optimization of multicompnent distillation with the nonequilibrium stage model:METSH equations were introduced in this paper.

前 言关于精馏塔模型的研究至今已经有 3 0余年了，经典的平衡级模型和非平衡级模型也都已经有了很多种的计算方法。

The raffinate column in the eluxyl unit of an aromatics complex is the key fractionator to separate C8 aromatics from para-diethyl benzene. PDEB is expensive and only if the PDEB content in C8 aromatics side cut is less than 25×10^(-6) mol/mol, the operation cost could be lowered effectively.

对二甲苯装置吸附分离单元的抽余液塔是分离碳八芳烃(C8A)和对二乙苯的关键精馏塔，PDEB价格昂贵，在侧线C8A中的含量要求小于25×10^(-6)mol/mol才能有效降低装置操作成本。

Energy savings can be achieved in this distillation system by running one of the columns at a higher pressure and integrating the condenser of the high-pressure column with the reboiler of the low-pressure column.

它的基本原理是由一个高压塔和一个低压塔来构成一个精馏系统，高压塔的塔顶蒸汽作为低压塔的塔釜供热，以节省能耗。

This Paper has discussed the Properties of the calendered mettalic porous corrugated sheet filler, and the effects of using this corrugated sheet filler in the fatty acids distillation process, It suggests to set up a research topic on the problem to use this special corrugated sheet filler in the absorption of the end gas in tne oil extraction plant and indicates its gratifying possibility.

本文介绍了金属压延孔板波填料的特性，以及在脂肪酸精馏技术应用中的效果。提出了在油脂浸出尾气吸收工艺中，应用金属压延孔板波填料的研究课题及可能性。

In order to prolong the running cycle of producing high purity n-hexane from reformate raffinate through adsorption-distillation technology, coking of olefins in the channels of 5A molecular sieve and regeneration of coked 5A molecular sieve were studied by microstructure analysis.

为实现吸附-精馏耦合由重整抽余油生产高纯度正己烷工艺的长周期运行，采用微结构分析方法研究了烯烃在5A分子筛孔道中的结焦行为及失活分子筛的再生工艺。

Influence of magnetizing treatment on rectification process of fatty acid

为进一步研究磁化处理对脂肪酸精馏过程的影响，在不同磁感应强度的磁场中，研究了磁化处理对脂肪酸物理性质的影响。

With the development of computer technology, the modeling and simulation of rectifying process already become the mainly tools on chemical technological design and operation.

随着计算机技术的飞速发展，精馏过程的模型化与仿真已成为化工工艺设计和操作分析的主要工具。

Firstly, MESH equation was established by means of phase equilibrium of each component. Simultaneously, with a view to the strong nonideal liquid phase of alcohol－water－benzene system, M－H EOS state equation was used to determine gas phase fugacity and heat enthalpy. And relaxation method was applied to compute the composition of ternary components on each theoretical tower plate.

首先针对恒沸精馏塔利用各组分相平衡关系建立MESH方程，同时考虑到乙醇－水－苯体系具有很强的非理想性的液相，利用马丁－侯81型状态方程确定气相逸度和焓，采用松弛法计算得到三元组分在各层理论塔板上的组成情况。

The experimental study for purification of peach aldehyde by vacuum batch distillation,as well as the heat sensitivity of the product,is carried out.

采用真空间歇精馏技术对桃醛原料进行分离试验，考察了桃醛的热敏性，确定了安全的操作温度范围和适宜的操作方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。