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前言Preface在任何一个液—液连续萃取的体系中,为了达到工艺要求,萃取剂、料液、洗涤剂、反萃剂等必不可少的不同组分,必须在同一时间内,分别以不同的流量,从不同的地点进入萃取体系中,随着被分离相关元素的增多,这些组分的数量从5个、10个增至十几个不等,而这些组分严格按工艺实验所确定的比例,准量、准时地进入萃取体系中的各相关点,是萃取工艺能否达到满意效果的关键。目前提高萃取工艺中各组分流量精度的方法大都是采用计算机控制。如用计算机控
Preface Preface In any liquid-liquid continuous extraction system, in order to meet the process requirements, extractables, feed liquids, detergents, stripping agents and other essential components must be at the same time, respectively, with different Flow, from different locations into the extraction system, with the separation of related elements increased, the number of these components from 5, 10 to more than a dozen, and these components in strict accordance with the experimental process to determine Ratio, accurate, on time access to the extraction system of the relevant points, is the extraction process can achieve the desired effect of the key. At present, most of the methods for improving the accuracy of each component in the extraction process are computer controlled. Such as using computer control