串级萃取理论之联动萃取分离工艺设计:Ⅱ、出口联动分离单元基本关系式Countercurrent Extraction Theory:Process Design of Hyperlink Extraction Separation Ⅱ:Optimum Equations of Outlet-hyperlink Separation Units
程福祥;吴声;廖春生;严纯华;
摘要(Abstract):
与传统流程中彼此独立的分离单元不同,联动萃取分离流程要求每一分离单元均通过横向或纵向衔接方式与其他分离单元联动运行。当两个分离单元横向衔接时,联动位置位于水相或有机相出口,彼此提供含有待分离组分的有机相或水相作为萃取有机相或洗涤液使用。以前文结论为基础,分别推导得到了无联动和出口联动(A_tA_(t-1)…A_2)/(A_(t-1)A_(t-2)…A_1)分离单元优化的基本关系式,包括水相进料、有机相进料和双相进料方式下中间组分Ai(2≤i≤t-1)最优切割方程、最小萃取量公式、最小洗涤量公式和混合萃取比方程等。
关键词(KeyWords): 稀土;串级萃取理论;邻级杂质比;联动萃取;最小萃取量
基金项目(Foundation): 基金重大研究计划集成项目(91422302)资助
作者(Authors): 程福祥;吴声;廖春生;严纯华;
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