I want to model a water gas shift reactor which will be after a reformer using Rgibbs reactor in aspen plus. Instead of hydrogen mole to increase it decreased. What is the proper way of doing it
watch this video:
https://www.youtube.com/watch?v=3uR54D5_0UQ
Thanks Ommolbanin Alizadeh Sahraei. I have seen this video early and this is how I modeled the reformer. I want just for water gas shift reactor
You wrote " Instead of hydrogen mole to increase it decreased". Substrates for WGS reaction are CO an H2O. There is no H2 at reactor inlet. So why the number hydrogen moles decreased? Knowing nothing about stoichiometric data, thermodynamic data and kinetic data introduced one can only guess - (+) instead of (-) in CO mass balace equation ?
Have you ever done computations by writing your own code for example in FORTRAN - if not, then try it. Regards,
Yes sir, I have done one use FORTRAN. Like I said, the product from the reformer, let's say methane reformer, is passed on to another reactor, to perform a water gas shift reaction to increase hydrogen produced already from the previous reformer. Because from the reformer, syngas is part of the product sent to the WGS reactor. So I want the the rgibbs reactor to perform this for me. Regards @ Miroslaw
Hello,
WGSR is a kinetic reaction. For model it, you need to use a RPLUG reactor with adequate kinetics according to the catalyst used. The catalyst is chosen considering the wanted conversion. Please take a look at this video
https://www.youtube.com/watch?v=kv7fhXcX_zU
and this article
https://www.researchgate.net/publication/314729584_A_review_of_thermochemical_processes_and_technologies_to_use_steelworks_off-gases
Best regards,
thank you Wilmar Uribe-Soto, I will look read up the article and give you feed back. One quick question, is it possible to use RGIBBS reactor as well
I don’t think so. The RGIBBS works by minimizing the chemical potential (Gibbs free energy) of the reaction mixture. If you want still to use the RGIBBS, you need to specify that the only reaction to consider is the WGSR. In that case, you can rather use an equilibrium reactor (REQUIL). Please, take a look at this site :
http://www.owlnet.rice.edu/~ceng403/eqasp.html
and this video:
https://www.youtube.com/watch?v=dZLBR-A8_aQ
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