Simulation of mass balance behavior in a large-scale circulating fluidized bed reactor

What is it about?

tWe determine using a compound model the influence of the mass of granular matter on the behaviorof a supercritical circulating fluidized bed (CFB) reactor. Population balance enables a stationary-regimemodeling of the mass flow of granular matter inside a CFB unit in a large-scale. The simulation includessome important dynamic processes of gas-particle flows in fluidized bed such as attrition, fragmenta-tion, elutriation, and fuel combustion. Numerical calculations with full boiler loading were performedof operational parameters such as furnace temperature, furnace pressure, feeding materials mass flows,and excess air ratio. Furthermore, three bed inventory masses were adopted as experimental variables inthe simulation model of mass balance. This approach enables a sensitivity study of mass flows of granularmatter inside a CFB facility. Some computational results from this population balance model obtained fora supercritical CFB reactor are presented that show consistency with the operational data for large-scaleCFB units.

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Why is it important?

This simulation model of mass balance enables a sensitivity study to be performed of mass flows of solids inside a large-scale CFB facility.