Questions regarding the simulation of the fermentation process
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I’ve just started learning Aspen and am working on problems related to bioethanol. When reading the literature, I noticed that simulations in their articles all use the RStoic reactor. However, the fermentation process is described in the text as involving a 2-day retention time. This can’t be reflected in RStoic; I also haven’t found out how they handle this issue. In the experimental data, since heating is required to continue for two days, the energy consumption is relatively high; however, when using RStoic for simulation, the energy consumption is much lower if the material is heated to the reaction temperature only once before being fed into the reactor. I’d like to ask the experts where I went wrong or how I should do this.
This type of process simulation does not provide a precise representation of the reactor; it only takes into account the inflow and outflow of the reactor.
Thank you, teacher! Could I ask you again? Does the Aspen simulation also not take into account the natural temperature drop that occurs during the transfer of material between the two reactors (if pipeline modules are not used), nor does it consider the energy required for stirring and filtration?