Here's important information regarding the product stream constraints. Please read this blog post carefully and make sure you have this information in mind when submitting your results.
The constraints for the input variables are not the only thing to watch out for when searching for good solutions. It is just as important to fulfill the product specifications!
In order to feed the bio-gas to the existing natural gas infrastructure it’s Methane content has to be above 96 mol% to achieve a sufficient heating value. However, this constraint is not too critical so that we allow a deviation of 0.1 mol%.
This does not apply to the H2S constraint. H2S is highly toxic and corrosive:
That is why we decided to limit the H2S concentration in the product stream to 20 ppm. No tolerance is given here!
In order to make it easier for all participants to keep all the restrictions in mind, we included a little table into the newest version of the flowsheet. It shows you whether your current solution is fulfilling the product constraints.
Good luck everyone!
Process Simulation Cup Team
28 June 2016