用MIBK萃取丙酮/水溶液，不能收敛?？ 照着例题做的，到最后为什么我的simulation不收敛？目标要在L-PRO2里水的质量分数达到90%，高手帮看下。。。 ->Processing input specifications ... * WARNING IN THE "PROPERTIES" PARAGRAPH WHICH BEGINS ON LINE 43 FREE-WATER METHOD SHOULD BE STEAMNBS OR STMNBS2 WHEN THE MAIN PROPERTY METHOD IS SRK. DEFAULT FREE-WATER METHOD IS STEAM-TA PLEASE SPECIFY THE RECOMMENDED FREE-WATER METHOD AND RUN AGAIN. * WARNING IN THE "STREAM" PARAGRAPH WHICH BEGINS ON LINE 74 STREAM NAME: FEED COMPONENT MASS FLOWS OF SUBSTREAM: "MIXED" ARE NORMALIZED TO THE TOTAL MASS FLOW VALUE. * WARNING IN THE "STREAM" PARAGRAPH WHICH BEGINS ON LINE 78 STREAM NAME: MIBK1 COMPONENT MASS FLOWS OF SUBSTREAM: "MIXED" ARE NORMALIZED TO THE TOTAL MASS FLOW VALUE. * WARNING IN THE "STREAM" PARAGRAPH WHICH BEGINS ON LINE 82 STREAM NAME: MIBK2 COMPONENT MASS FLOWS OF SUBSTREAM: "MIXED" ARE NORMALIZED TO THE TOTAL MASS FLOW VALUE. Flowsheet Analysis : Block $OLVER01 (Method: SECANT ) has been defined to converge specs : DS-1 COMPUTATION ORDER FOR THE FLOWSHEET: MIXER1 FLASH1 $OLVER01 MIXER2 FLASH2 (RETURN $OLVER01) ->Calculations begin ... Block: MIXER1 Model: MIXER Block: FLASH1 Model: FLASH3 Block: MIXER2 Model: MIXER Block: FLASH2 Model: FLASH3 > Beginning Convergence Loop $OLVER01 Method: SECANT * WARNING SAMPLED VARIABLE "WATER" HAS NOT BEEN CALCULATED. VALUE IS MISSING. 1 vars not converged, Max Err/Tol 0.10000E+07 Block: MIXER2 Model: MIXER Block: FLASH2 Model: FLASH3 > Loop $OLVER01 Method: SECANT Iteration 2 * WARNING SAMPLED VARIABLE "WATER" HAS NOT BEEN CALCULATED. VALUE IS MISSING. * WARNING SPEC FUNCTION NOT CHANGING, POSSIBLY HAS A FLAT RESPONSE TO THE MANIPULATED PARAMETER WITHIN THE GIVEN BOUNDS. 1 vars not converged, Max Err/Tol 0.00000E+00 ** ERROR Convergence block $OLVER01 did not converge normally in the final pass ->Simulation calculations completed ...查看更多2个回答 . 2人已关注
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