Abstract: A new computation procedure is proposed for multicomponent distillation columns processing non-ideal solutions. The Newton-Raphson method in whichliquid mole fractions are chosen as independent variables is used to solve the tridiagonal matrix equation, and a block tridiagonal matrix algorithm is developed. Successful applications of the new method to some non-ideal distillation systems are demonstrated with features of more insensitiveness to the initial values fewer C. P. U. memories, fewer partial derivatives more rapid and more stable than others.

摘要： 本文应用Newton-Raphson技术求解精馏计算的三对角线物料平衡方程组.提出了一种新的块状三对角线矩阵法.本方法具有程序简单,对初值的选择要求不高,占用计算机内存少,计算偏导数少和快速稳定收敛等特点.