摘要
丁二烯抽提（ＧＰＢ）装置的第一、二萃取精馏塔底部均装有侧沸器，实际上是集液板。与一般塔板不同，模拟计算时不能简单地采用三对角矩阵法求解所列方程组，而必须用矩阵求逆法或其它方法求解，这就需要更多的内存和更多的计算时间。文中将数学模型进行变换，使之仍可采用三对角矩阵法求解。在此基础上，应用了二阶Ｒｕｎｇｅ－Ｋｕｔｔａ及三对角矩阵联合法计算，顺利收敛，达到满意的计算精度。
The first and second extracti ve distillation columns with side reboilers of butadicne extraction unit are different from normal ones. So the mathematical equations of simulating computation can not be simply solved by tridiagonal matrix algorithm.In this paper,the mathematical models for these two colums are medified to make the tridiagonal matrix algorithm be available for the two columns.Based on the modified model.the tridiagonal matrix algorthm cornbined with second-order Runge-Kutta method was used to solve the equations. The computation is easy to converge, and the results are satisfactory.
出处
《石油大学学报（自然科学版）》
CSCD
1994年第3期84-89,共6页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
丁二烯
计算
萃取
精馏塔
Butadiene
Simulating computation
Extractive
Distillation
