吸收塔的模拟老是碰到干板，希望大神指点下？

***SEVERE ERROR THE FOLLOWING STAGES DRIED UP (VAPOR OR LIQUID FLOW APPROACHES 0)： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 A LIMIT OF 0.10000E-04*SUM OF FEEDS WAS IMPOSED ON THE FLOW RATES OR A LIMIT OF 0.10000E-04 WAS IMPOSED ON THE STAGE V/L OR L/V RATIO. 求解！我之前也查过很多解决的方法，但是都不行！ 显示全部