Fast pyrolysis allows the valorization of underexplored low-economic value biomass sources like forest or crop residues (some are currently disposed of or burned in the field / on the roadside). Fast pyrolysis traditionally focuses on the production of bio-oil, an energy dense liquid that is more economic to transport than raw biomass and can be directly combusted or refined into higher-value commodities including hydrogen, fuels, precursors and fine chemicals.
While simulation is currently a common step during process design and basic engineering, the development of models for existent units allows for the identification of retrofitting potential, heat integration, process optimization and novel valorization of main and side-streams. Regarding fast pyrolysis units, there is a lack of viable process models that offer enough complexity to permit a rigorous study, frequently due to shortcomings in the modeling of the reactor or product recovery steps. The complexity of biomass, namely its heterogeneity, is difficult to address in a fashion that allows for the versatility of the model.
The article describes an approach to develop a model for industrial scale pyrolysis processes. While the model shows promise, there are still shortcomings in the product distribution, composition of condensates and energy balance of the system. Nonetheless, it provides a valuable step for the development of even better models of fast pyrolysis, ultimately assisting on the improvement of this technology for converting plant biomass into fuels or other chemical commodities in a sustainable manner.
See article at page 3 of Task 34 Direct Thermochemical Liquefaction #PyNe55 newsletter 🔗 https://lnkd.in/d87sHjEC