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Co2/h2 Separation In Chemcad

chemcad hydrogen absorption

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#1 gab_prz


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Posted 10 October 2018 - 09:32 AM



I write a project about biohydrogen production and in one section I must do a process simulation of hydrogen separation or purification in chemCAD.


I choose a chemical absorption to separate hydrogen and carbon dioxide. But I have a problem with running my simulations, every time there is an error "scds/extr did not converge" I don't know what I'm doing wrong. 

The first stream is a 50% KOH solution and second is a gas mixture (80% of H2 and 20% of CO2) a range of temerature conditions are 57-107C and pressure 5-30 bar. I do different combinations and always there is a error. 


How can I converge a SCDS column? Maybe someone do similar simulation in ChemCAD and can help me.

Or are there some articles describing in details such process?



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