在反应精馏过程中运行不收敛，求大神指点
**ERROR
RADFRAC NOT CONVERGED IN50 OUTSIDE LOOP ITERATIONS.
*** SEVERE ERROR
MATERIAL AND ENERGY BALANCES FAILED TO CONVERGE: CHECK COL-SPECS
OR SUPPLY BETTER TEMPERATURE AND COMPOSITION ESTIMATES.
**ERROR
BLOCK RD IS NOT IN MASS BALANCE:
MASS INLET FLOW = 0.43924956E+01, MASS OUTLET FLOW = 0.34871057E+01
RELATIVE DIFFERENCE = 0.25963933E+00
Block: DECANTER Model: DECANTER
->Simulation calculations completed ...
***Warning(s) were issued during Input Translation ***
***Check the Run Status Results for more Information ***
***Summary of Simulation Errors***
Physical
Property System Simulation
Terminal Errors 0 0 0
Severe Errors 0 0 1
Errors 0 0 2
Warnings 0 0 0
->Generating results ...
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