Please tell me, aspen simulates chemical absorption error, how to solve it?
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When Aspen simulates chemical absorption, such a warning appears: WARNING IN PHYSICAL PROPERTY SYSTEM NEGATIVE VALUE OF LIQUID MIXTURE HEAT CAPACITY CALCULATED USING PROPERTY METHOD ELECNRTLAT T= 280.43, P= 0.10132E+06 AN ABSOLUTE VALUE IS USED. In other words, my calculation results show a negative liquid phase mixing heat capacity. I don’t know what’s going on? I changed the top pressure of the absorption tower before, and this happened. What impact will the tower pressure have on this?
I also encountered similar problems! ! Is there anyone who can guide me under the guidance of an expert? Is this an emergency? Could it be that the physical method was chosen improperly? ? ?
The pressure at the top of the tower will affect the overall heat distribution, maybe this is the reason.
Reply 3# hyowinner I also think this may be the case, but if it is too high, it will prompt that it cannot be greater than the feed pressure, and if it is too low, it does not seem to work. How to choose is really troublesome?
It is recommended to post the file. It seems that I have never encountered such an error.