Comparison of simulated and actual load in methanol distillation
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The load calculated by the model I created is 10 times different from the actual value; I’m not sure why. . . This post was last edited by HaiChuanDeFeng on 2007-12-3 18:10.]
I’m waiting to see the original poster clarify the question further.
In other words, about 90% of the methanol is to be purified to 99.9% using a three-column distillation model. The calculations show that the load on the pressure-enhanced distillation column is twice as high as in reality, while the load on the pre-distillation column is around 10% of the actual value; clearly, this does not correspond to the actual situation.
Is the heat load difference significant? There doesn’t seem to be much to discuss regarding the gas-liquid load; it shouldn’t differ by a factor of 10. This post was last edited by LTY on 2007-12-3 18:24]
The heat load is directly related to the reflux; there is likely a significant difference between your set value for reflux and the actual reflux conditions. Additionally, check whether the thermodynamic equations are correct and whether the settings for the tower are too high – all of these factors can lead to abnormal heat loads. In short, compare it with the actual operational data to identify the real cause; I hope the original poster can provide feedback.