After RADFRAC is run, it says that the material is not conserved.
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This post was last edited by zzhnyf on 2009-11-13 09:59 I am a beginner, and I usually make simple things and everything runs fine. Yesterday I used RADFRAC to separate methanol and water, which is a very conventional method. After running, it says that the material is not conserved.: ERROR BLOCK B1 IS NOT IN MASS BALANCE: MASS INLET FLOW = 0.31535657E+00, MASS OUTLET FLOW = 0.00000000E+00 ABSOLUTE DIFFERENCE = 0.31535657E+00 The exported materials should not be defined, right? They are automatically generated? I have not defined the export material. There are no internal design indicators. I don't know what's going on. Can anyone help me solve it? Thanks.
Send me your program. I'll see if I can solve it. tj_mym@126.com .
2#tj_Maym sent it to your email, haha.
This prompt appears because of non-convergence. Change the settings to be more reasonable. It is just because errors in other places show that mass is not conserved in the calculation. In fact, it has nothing to do with mass conservation.
I often encounter this situation, usually by adjusting the flow to make it converge
The flow rate of your export logistics is 0. I think it is a problem with your settings. You can adjust the reflux ratio, the production volume of the tower kettle or the production flow rate of the tower top and tower kettle.
After correcting it, it turns out that the input material flow rate was entered incorrectly. The top of the tower was 500 instead of 50, and the feed was only 100. I was dizzy. Thank you everyone. . .