aspen-dynamic equation—how to define the equation oneself
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In my simulation of the SCR denitration process, the kinetic equation obtained from the literature is as follows: This equation includes an additional correction term compared to the Arrhenius equation; this correction term relates to adsorption, and it is also of the Arrhenius type. Neither the power law nor the LHHW equation fits. I would be extremely grateful if an expert could give some advice! ! !
In your case, just combine k and a to form a new k – that would work, as it would be in exponential form
Thank you, but while the numerator can be combined, the denominator is also 1+a, and it’s not possible to deal with that denominator; as a result, even after combining the numerators, we still don’t get the Arrhenius equation
Haha, I didn’t see it; it seems that the only way is to use a custom approach with the USER type
Aspen version V7.2 is too low; in user-defined settings, the default value for Ln(K) is A + BT + C/LnT + D. . . In this format, I don’t see where the activation energy, pre-exponential factor, etc. can be defined
USER is a method that involves using external DLLs, or the USERAM type, which is implemented using ACM; but all of these are relatively complex and not something that can be done in a short time
Well, it’s too troublesome. V7.2 has been uninstalled; let’s try V10 – it has more features, and maybe it allows for customization
Could the original poster upload the paper?