Can the pyrolysis of a non-conventional material (coal) to produce another non-conventional material (tar) be calculated using Aspen?
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I’ve been in contact with Aspen recently; it is indeed used quite often for gasification, but the tar issue is often overlooked. The problem here is coal fluidized bed carbonization, where tar is a major product, and its formation cannot be ignored. Can Aspen be used for such calculations? If possible, how should tar be handled? I hope to obtain the yield of tar, as well as the composition and yield of gas. I would appreciate some guidance from those who know more; thank you.
I’m not an expert, but I think my advice might be useful to you. Tar is treated as a non-convective substance; just like coal, you need data on its elemental and industrial analysis, as well as data on the composition of the gas. An important point is that Aspen cannot simulate reaction kinetics – it is only capable of simulating steady-state processes.
The key is to include the physical and reaction properties of tar in Aspen
The above experts’ explanations are still quite rough; I’m not sure about the specifics