aspen 版本是7.2，做的是一个吸收CO2的循环流程，遇到的问题如下（已上传bkp文件到附件）：Block: STRIPPER Model: RADFRAC * WARNING FEED PRESSURE 0.10132E+06 (N/SQM) OF STREAM F1 IS LOWER THAN STAGE 8 PRESSURE 0.15231E+06 (N/SQM). Convergence iterations: OL ML IL Err/Tol 1 1 10 2957.1 2 1 10 6755.6 *** SEVERE ERROR MATERIAL AND ENERGY BALANCES FAILED TO CONVERGE: CHECK COL-SPECS OR SUPPLY BETTER TEMPERATURE AND COMPOSITION ESTIMATES. *** SEVERE ERROR THE FOLLOWING STAGES DRIED UP: 2 3 4 6 A LIMIT OF 0.10000E-04 * SUM OF FEEDS WAS IMPOSED ON THE FLOW RATES. ** ERROR BLOCK STRIPPER IS NOT IN MASS BALANCE: MASS INLET FLOW = 0.27387925E+03, MASS OUTLET FLOW = 0.30153645E+03 RELATIVE DIFFERENCE = 0.10098318E+00
