Parallel and series reactions

I am currently trying to simulate a number of heterogenous catalytic reactions in a PFR. In total there are 5 reactions that can occur in this reactor, three of which can occur simultaneously (in parallel) and the other two can only occur once the others have proceeded to an appreciable extent. I have tried to set the sequances in the reaction set but this results in known of the reactions occuring at all. How exactly does one correctly set the sequance of reactions in DWSIM?

DWSIM 13-09-21, 2:59 p.m. Jarod_Chester

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