2 replies to this topic

[jyoti sahu]

Sir/Ma`m,
I am very new user in Aspen plus Software. I want to find out binary interaction parameters for the NRTL model (sodium chloride and water).
http://en.wikipedia....wo-liquid_model (because I am unable to write the NRTL equations here so please go through the equation on topic of general equations)

Let me clear one thing that I want to study solution thermodynamics at temperature range 298.15-373.15K. There is no LLE, VLE or SLE (my system is below the solubility of Sodium chloride in water)
Now Please suggest me the procedure/steps to enter required input so that I can get output/required result (binary interaction parameters a_ij, b_ij, c_ij, d_ij,e_ij and f_ij)
Thanks in advance for your valuable suggestions.
Regards
Jyoti Sahu

Edited by jyoti sahu, 18 July 2012 - 07:05 AM.

[jyoti sahu]

OMG........ no response till now..............

[MrShorty]

I'm not sure what question you are asking.

Is this a question about Aspen? Namely, "I have the interaction parameters, but I don't know how to enter them into Aspen." If no one here can help you enter them into Aspen, you might ask the tech people at Aspen how to do that.

Or is this a question like: "I have my experimental data, how do I enter it into Aspen and have Aspen regress the data?"

Or is this a more generic question (not specific to Aspen) about how to calculate and regress activitiy coefficients of electrolytes?

Or, since you link to Wikipedia is for the non-electrolyte version of the NRTL equation, is this a question of how to extend the NRTL equation to express the activity coefficient of electrolytes?

Edited by MrShorty, 23 July 2012 - 09:56 AM.