采用两种不同的数学方法进行处理。推导出两对角线方程和块状两对角线方程,提出了两种相应的数值计算方法。本文的方法具有对初值要求不高和收敛迅速的特点-The model equations of the multicomponent multistage adiabatic flash process are handled by two different mathematical methods in the forms of di-d