Simulation of lime calcination in PFR kiln – Influence of energy input and lime throughput

This article presents a one-dimensional mathematical model to describe and simulate the lime calcination process in a parallel flow regenerative (PFR) lime shaft kiln. The model comprises ordinary differential equations derived from the principal conservations of mass and energy. A shrinking core model is employed for describing the calcination of the solid material. The model can be used to predict the temperatures (core and surface) of the particles in the bed, the gas temperature, the lime burning degree (residual CO2), the heat loss by the kiln wall and the pressure drop along the length...

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