新人求助，模拟出现干板和不收敛问题

发表于 1970-1-1 08:00:00 显示全部楼层 |阅读模式

aspen求助
aspen版本:	* 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: 3 4 20 A LIMIT OF 0.10000E-04 * SUM OF FEEDS WAS IMPOSED ON THE FLOW RATES. INFORMATION CALCULATED REBOILER DUTY IS NEGATIVE. ** ERROR BLOCK 122-D2 IS NOT IN MASS BALANCE: MASS INLET FLOW = 0.47941021E+02, MASS OUTLET FLOW = 0.71228829E+02 RELATIVE DIFFERENCE = 0.48575954E+00 * WARNING STREAM LMDEA IS NOT IN CHARGE BALANCE: ANION FLOW = -.18067346E-02, CATION FLOW = 0.18056505E-02 ABSOLUTE DIFFERENCE = -.10840836E-05 RELATIVE DIFFERENCE = -.60038398E-03 模拟合成氨脱碳过程不能收敛，求教该怎么解决

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