(92f) Modeling Intensification of Biomass Fast Pyrolysis through Autothermal Operation
This work presents a novel approach to the modeling of a fluidized bed reactor, focusing on the experience of small particles that make up a minority of the bed mass. Due to the decoupling of solid- and vapor-phase reactions, the group of reactive particles can be modeled as a series of open control volumes surrounded by a uniform temperature heat source. The phenomena of heat transfer, chemical reaction, density loss, and elutriation are all captured in a format applicable within commercially available process simulators. The addition of oxidation reactions to the solid and vapor phases allows the reactor model to operate autothermally. Simulation results are used to estimate the performance enhancement derived from autothermal operation.