5 replies to this topic

[falling_star]

Hi,

I am in a very confused state about choosing fluidpackages in HYSYS. So I was hoping to get opinions of members in this forum regarding this. What are the most suitable fluidpackaged for the following processes?

• Azeotropic distillation of Ethanol using Benzene

• Production of Phenol using Cumene (Hock process)

Any advice regarding this will be very helpful!

Thanks,
falling_star

[abhi_agrawa]

You have raised a very important point: which thermodynamic method to choose for simulation of a process. Suggest that you have a look at the following papers

“Don’t Gamble with Physical Properties for Simulations,” by E.C. Carlson, Chem. Eng. Prog. (October 1996) pp 35-46. This paper covers extensively of steps to be taken to choose a method that can be relied to give a reasonable prediction.

“Uncovering the realities of simulation,” by R. Agarwal, Y.K. Li, M.A. Satyro and A. Vieler, Chem. Eng. Prog. (May 2001 and June 2001). This paper was in two part and deals with important things to take care of while doing simulations.

For an azeotropic system, like Ethanol and Benzene, I'd say an activity coefficient model, like NRTL or UNIQUAC should give decent predictions.

Hope this help,
abhishek

[Padmakar Katre]

Dear Abhishek,
Indeed a good information for new learners.These two articles are really helpful.
Thanks & Regards,
Padmakar Katre

[falling_star]

You have raised a very important point: which thermodynamic method to choose for simulation of a process. Suggest that you have a look at the following papers

“Don’t Gamble with Physical Properties for Simulations,” by E.C. Carlson, Chem. Eng. Prog. (October 1996) pp 35-46. This paper covers extensively of steps to be taken to choose a method that can be relied to give a reasonable prediction.

“Uncovering the realities of simulation,” by R. Agarwal, Y.K. Li, M.A. Satyro and A. Vieler, Chem. Eng. Prog. (May 2001 and June 2001). This paper was in two part and deals with important things to take care of while doing simulations.

For an azeotropic system, like Ethanol and Benzene, I'd say an activity coefficient model, like NRTL or UNIQUAC should give decent predictions.

Hope this help,
abhishek

Thank you very much Abhishek! But still I'm searching for the journals you have mentioned. I searched for it in the "American chemical society" database and in my university online library. Please let me know where you go these journals. Any database which requires Athens usename and password is accessible to me.

Thank you very much!

[falling_star]

Sorry to bother you. i just found "Don’t Gamble with Physical Properties for Simulations" by just using Google! All the time I was looking in the various databases available to me. anyway thanks for all the help!

[Zauberberg]

Hello falling_star,

You can find some problem-related information at:

http://www.kolmetz.c...rticle-030.html
http://www.kolmetz.c...rticle-029.html

Also, the following article might be of some help to you:

[attachment=592:Selectio..._Methods.pdf]