各位前辈，我用PROII的简洁塔模拟精馏后出现问题，求大大帮看下哪里出问题了，附件里面有模拟文件。感谢啊 *** PROBLEM SOLUTION BEGINS FEED FLASH BEGINS ** WARNING ** The liquid enthalpy of BIPHENYL at temperature 313.15 K is outside the acceptable range of 342.2 K through 533.37 K. FEED FLASH COMPLETE UNIT 1 BEGINS - 'SCD1 ' *** ERROR *** UNIT 1, 'SCD1' - Improvement in the solution is impossible. FENSKE calculations STOPPED at trial 11 . UNIT 1 NOT SOLVED *** PROBLEM SOLUTION NOT REACHED *** *** GLOBAL DEVIATION 25.41 MOLE PERCENT *** MAXIMUM DEVIATION ON COMPONENT BIPHENYL OF 100.00 MOLE PERCENT *** ** WARNING ** Unit 'SCD1' DID NOT SOLVE *** Run completed - Case not solved *** THIS RUN USED 2.24 PRO/II SIMULATION UNITS *** RUN STATISTICS STARTED 10:50:22 07/06/16 1 ERROR FINISHED 10:50:22 07/06/16 2 WARNINGS RUN TIMES NO MESSAGES INTERACTIVE 0 MIN, 0.00 SEC CALCULATIONS 0 MIN, 0.40 SEC TOTAL 0 MIN, 0.40 SEC ** WARNING ** PROBLEM SOLUTION NOT REACHED. ** Note- Default Tolerances in unit specifications, recycle loops and columns are tightened starting with PRO/II 9.4. If the file is happened to converge in previous version, probable reason for non-convergence could be tightened tolerance in current version. ** WARNING ** UNDERWOOD calculations FAILED to converge. 显示全部