精馏段

关于精馏段理论板数的计算

On calculation of theoretical number of plates of rectifying section

精馏段上升气流较小，回流比接近最小回流比，导致在进料板附近形成恒浓区。

The up gas stream of rectifying section was small and reflux ratio was near minimum reflux ratio that brought on the formation of concentration constant zone closed to charge plate .

采用专门测定此特殊结构的催化剂填充层的气膜和液膜传质系数关联式来计算反应段中的传质速率，用Onda的关联式计算精馏段和提馏段填充层中的传质速率。

The mass transfer rate in the reaction section is calculated by using gas and liquid film mass transfer coefficients specially measured for this structure of catalyst bed and the mass transfer rates in the rectifying and stripping sections are calculated by using Onda 's correlation .

这种方法根据组分的挥发度分析精馏段和提馏段组成变化，从而判断分离的可行性。

The feasibility of splits was analyzed according to the composition change of the rectifying and stripping sections .

其基本原理是：精馏段和提馏段被分为两个塔，热耦合通过两段之间的热交换来实现；

The manipulation of internal thermal coupling is accomplished through heat exchange between the rectifying and the stripping sections .

精馏段塔盘数为19，汽提段塔盘数为20，酚回收段塔盘数为5。

The actual plates of rectifying , stripping and phenol recovery section were 19 , 20 and 5 respectively .

蒸馏塔内部热集成技术系指同一塔内通过精馏段和提馏段之间的热量集成。

The internally heat integrated distillation technology refers to the heat integration of the same column ( between ) the rectifying and stripping sections .

根据精馏段和提馏段热耦合的相对位置不同，外部热耦合复合精馏塔系统可分为对称型和非对称型两种结构。

According to the relative positions of thermal coupled rectifying and stripping sections , the configurations of the system involved two types , symmetrical EHIDDiC and asymmetrical EHIDDiC .

从灵敏实际级的定义出发，导出一个立方型方程，解此方程得出精馏段和提馏段的灵敏实际级上的液相组成。

Based on the definition of sensitive actual stage a cubic equation was derived and solved for the liquid compositions on the sensitive actual stages for the rectifying and stripping sections .

为了提供传热必须的推动力，精馏段将在较高的压强下进行操作，为了调整压强，两段之间安装了压缩机和调节阀；

In order to provide the necessary temperature driving force for the heat to be transferred from the rectifying section to the stripping section , the former must be operated at a higher pressure than the latter .

通过钠盐制备、相转移催化、水洗分离、精馏四段工艺得到GA的总收率为78.2%，纯度为97.0%。

℃ . A total GA yield of 78.2 % and purity 97.0 % were obtained from the entire process including SA preparation , phase transfer reaction , water washing and distillation .

直接蒸汽加热时二元连续精馏塔提馏段操作线方程

Discussion on the Stripping Stage Operating Line Equation of the Two component Continuous Rectification Tower with Direct Steam Injection

结合加料板的进料状态，以此点展开连续精馏塔精馏段板数的计算和提留段板数的计算，无论是逐板计算法还是图解法都有别经典的从塔顶计算的方法。

The location of feed tower plate are determined by this point , according to feed state , the number of stripping section tower plates and the number of enriching section tower plates are calculated from this point by the plate to plate calculation methods , which the graphical method .

本文将吸收精馏塔作为吸收段和提馏段的联合系统处理。

In this article , the absorption-distillation column is considered as being consisted of an absorber and a stripper .

本文还讨论了在采用常规精馏方法时，增加精馏段的板数，无助于分离程度的提高。

To increase the number of phates in the distillation section has no effect on rectification .

为降低含酮连氮废水中的酮连氮含量，采用高效精馏塔，在提馏段将酮连氮从废水中汽提出来，在精馏段通过精馏将有机物料浓缩，达到回收的要求。

A high-efficient rectification column was used to reduce the content of azine in wastewater . Azine was stripped from wastewater at the stripping section and concentrated at the rectification section to meet the recovery requirement .

数值分析的结果表明精馏塔灵敏板位置并不在进料板附近，而是位于精馏段的中上部，且回流比愈小，愈靠近塔顶；

The results indicate that the position of sensitive plates is located at the section of middle or upper in tower but not near by feeding plate , and the smaller reflux ratio , the closer overhead of distillation tower .

分析了低温精馏塔内部不同理论塔板上气相组分变化与爆炸极限的关系，提出了低温精馏塔采用只有提馏段和再沸器，没有精馏段和冷凝器的结构。

By analyzing the relationship between the gas component and its explosion limit at each theoretical plate in the low-temperature distillation tower , it presents the distillation tower structure with a low-temperature distillation stripping section and a reboiler , and without a rectifying section and a condenser .

催化精馏是将催化反应与精馏分离有机地结合在同一个设备中进行的耦合过程，技术的关键之一是催化反应精馏段催化剂的装填。

The catalytic distillation is a coupling process that organically combined the catalytic reaction with the distillation separation in the same equipment . One of the key technologies is the catalyst packing in the catalytic reactive distillation zone .