You need to declare a property set that includes electrolytes. Then combine two flowsheet unit operations of absorber and reactor.
You might be treating H2S. If so then it and it's ions need to be declared as components. In treating SO2 then the water soluble ions must be declared as components.
Working with slurries requires the use of streams with substreams in which the solid part is the substream.
The chemical reactions including ionizations should be declared in the set up menu. Your data set may contain all of the necessary parameters, but if not then you can allow the property system to estimate the missing items, or you can enter the parameters as constants and equations from references,
I prefer to do a final check by hand and spread sheet, and compare the results to published operations data.
One can treat the process as absorption, but one can also treat it as a non-catalytic gas-solid reaction. And then one can reach for the models used in such a situation. It is also worth precisely specifying the conditions of the process and the way it is conducted (there are several), because only information on inlet and outlet streams is not enough. Regards
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