毕设新手，流程模拟中出现干板，且没有流股进料，求大神帮助

li16484242588 · 发表于 1970-1-1 08:00:00

SEVERE ERROR
   THE FOLLOWING STAGES DRIED UP (VAPOR OR LIQUID FLOW APPROACHES 0):
   21 22 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.

INFORMATION
   CALCULATED REBOILER DUTY IS NEGATIVE.

Block: 2       Model: FSPLIT
  * WARNING
   ZERO FEED TO THE BLOCK. BLOCK BYPASSED

Block: C1    Model: COMPR
  * WARNING
   TOTAL FLOW IS ZERO. BLOCK IS BYPASSED.