复合萃取剂醋酸乙二醛液液相平衡研究

Study on liquidliquid phase equilibrium of the mixed extractantacetic acidglyoxal

研究了复合萃取剂醋酸乙二醛溶液三元体系在２５℃时的液液相平衡关系，用浑浊法测定了体系的分层曲线，借作图法确定了临界混溶点，用自动电位滴定仪测定了平衡两相中醋酸的含量，绘制了三元相图，从三元相图的分层曲线看，复合萃取剂具有较好的萃取能力，它是萃取醋酸的良好萃取剂．此外，还对液液平衡数据进行了结线关联，结果发现它们能较好地符合Ｈａｎｄ关联．

The ternary system of liquid liquid phase equilibrium has been studied at 25℃ in this paper.The separation cure of the system was determined by the turbidity method,The tie line data were obtained by analyzing the acetic acid concentration of both phases at equilibrium with ZD3 apparatus. The experimental results showed that the mixed extractant was a good extractant ; moreover,the tie line data were found to be agreement with Hand correlation.