8 replies to this topic

[SickPuppy0]

Hello,

 

I require the binary interaction parameters used in the Peng-Robison's equation of state for a number of compounds in a gas mixture. It is my understanding that these parameters are temperature dependent. Where is the best place to find these values or alternatively, can I use a software package like ASPEN to pull this data.

 

Thanks in advance,

[breizh]

Hi,

Google :  binary interaction parameters used in the Peng-Robison's equation

 

you will find YouTube videos on the subject and references .

One of the references is: Ohe.S (1990) vapor liquid equilibrium data at high pressure  Elsiever Science limited

 

Good luck

Breizh 

[SickPuppy0]

Thanks, I did see the Youtube video before posting and I tried to obtain that book but couldn't find a digital copy. Where can I purchase this book digitally? Appreciate the help

[SilverShaded]

Hysys uses Chueh and Prausnitz BIPs which are not temperature dependant, the formula can probably be found online somwhere its simply a function of critical volume.

If you really want temperature dependant parameters have a look for predictive peng robinson papers, the calcs can be done nicely in a spreadsheet with a bit of effort.

 

Here for example;

 

https://chempedia.in...17019076100081/

Edited by SilverShaded, 11 December 2022 - 12:18 PM.

[PaoloPemi]

in standard Peng Robinson EOS there is no temperature dependence in BIPS, but there are several variants and you should inform about the  model you utilize,

you can find these values in  Dechema or similar sources or calculate BIPS with a data regression procedure (available in many tools), for details see this post,

https://www.cheresou...ethod-in-hysys/

[breizh]

Hi,

You may find some interest in the link attached:

https://pubs.acs.org...csomega.1c06519

 

Breizh

[SickPuppy0]

Thank you all very much for the suggestions and feedback. I really appreciate it and I hope I find the solution in the links provided.

 

On another note, it may be easier to perform a "calibration" or regression / match to my experimental data. I have Z-Factor at multiple temperatures and pressures, surly there is a method to perform this calibration. Is this possible in HYSYS. I appreciate any feedback. Thank you in advance.

[PaoloPemi]

not sure to understand the scope of your work,, in general BIPs have little influence on gas density calculated with a cubic EOS, there are other parameters (alpha function, volume translation etc.) which you may consider,

while I am familiar with multi-parameter data regression procedures (to calculate parameters in extended EOSs as for example in Prode) I am not sure if Aspen includes those options...

[latexman]

I’m familiar with Aspen+, not HYSYS. In Aspen+, one can use their Data Regression System (DRS) to determine the binary parameters from experimental phase equilibrium data (usually binary VLE data). Again, idk if HYSYS has similar.