A STAGEWISE ALGORITHM FOR MULTICOMPONENT MULTISTAGE BATCH DISTILLATION CALCULATION

被引:0
作者
MORI, H [1 ]
GOTO, H [1 ]
YANG, ZC [1 ]
ARAGAKI, T [1 ]
KOH, ST [1 ]
AKIBA, I [1 ]
机构
[1] IDEMITSU PETROCHEM CO LTD,TOKUYAMA,YAMAGUCHI 745,JAPAN
关键词
DISTILLATION; BATCH DISTILLATION; SIMULATION METHOD; MULTICOMPONENT; IMPLICIT EULER METHOD;
D O I
10.1252/jcej.28.576
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A stagewise algorithm is proposed for the solution of multicomponent multistage batch distillation problems. In order to make the algorithm more precise and flexible, a generalized implicit Euler equation is implemented for numerical integration of the process variables on each stage at succeeding time steps. An overall normalized theta method is also employed to accelerate convergence for each time step. The relative performance of the proposed method compared with the Runge-Kutta method is shown using a numerical example; the CPU time can be decreased by up to 1/300. Comparison of the simulation results with the experiment suggests the adequacy of the proposed method.
引用
收藏
页码:576 / 581
页数:6
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