二元混合物塔顶累积全回流间歇精馏的最小气化总量

引　言80年代末 ,余国琮、杨志才等1] 参照连续精馏开工过程的操作方法提出并实验证明了一种新的间歇精馏操作方法─—塔顶累积全回流间歇精馏(流程见图 1) .对于特定的分离任务 ,采用此操作方法间歇精馏与传统的恒回流比操作方法相比 ,能耗比较低 ,可望在工业生产上获得应用 .本文采用此操作方法推导了在理想操作条件下 ,间歇精馏二元理想混合物所需最小气化总量的计算方法 .Ｆｉｇ.1　Ｆｌｏｗｓｈｅｅｔｏｆｂａｔｃｈｄｉｓｔｉｌｌａｔｉｏｎｕｎｄｅｒｔｏｔａｌｒｅｆｌｕｘａｎｄｔｏｐａｃｃｕｍｕｌａｔｉｏｎ1,7—ｐｒｏｄｕｃ…

MINIMUM TOTAL VAPOR CAPACITY OF BATCH DISTILLATION OF BINARY MIXTURE UNDER TOTAL REFLUX AND TOP ACCUMULATION

Algorithm of the minimum total vapor capacity of batch distillation of ideal binary mixture under total reflux and top accumulation and ideal operation condition is developed.A function f(x D) equation(7)]is set up and transformed into g(x D)equation(10)]in order to determine that the instantaneous constant region is on the top(or in bottom).For designed separation task,the method for determining the interval of x D in which the instantaneous constant region is on the top(or in bottom)and the equations for calculating minimum total vapor capacity are derived.