Simulation of mass balance behavior in a large-scale circulating fluidized bed reactor--颗粒学报PARTICUOLOGY

Blaszczuk, A., Zylka, A., & Leszczynski, J. (2016). Simulation of mass balance behavior in a large-scale circulating fluidized bed reactor. Particuology, 25, 51-58. https://doi.org/10.1016/j.partic.2015.04.003

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

Artur Blaszczuk ^a *, Anna Zylka^a, Jacek Leszczynski ^b

a Czestochowa University of Technology, Institute of Advanced Energy Technologies, Dabrowskiego 73, 42-200 Czestochowa, Poland
b AGH University Science and Technology, Faculty of Energy and Fuels, Department of Hydrogen Energy, Mickiewicza 30, 30-059 Cracow, Poland

10.1016/j.partic.2015.04.003

Volume 25, April 2016, Pages 51-58

Received 3 November 2014, Revised 10 March 2015, Accepted 9 April 2015, Available online 20 July 2015, Version of Record 18 February 2016.

E-mail: ablaszczuk@is.pcz.czest.pl

Highlights

• Bed inventory mass significantly affected the simulated behavior of a supercritical CFB reactor.

• Computational results were validated against experimental data of performance test.

• The simulation model enables PSD to be monitored during operation of a large-scale CFB combustor.

Abstract

We determine using a compound model the influence of the mass of granular matter on the behavior of a supercritical circulating fluidized bed (CFB) reactor. Population balance enables a stationary-regime modeling of the mass flow of granular matter inside a CFB unit in a large-scale. The simulation includes some important dynamic processes of gas-particle flows in fluidized bed such as attrition, fragmentation, elutriation, and fuel combustion. Numerical calculations with full boiler loading were performed of 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 in the simulation model of mass balance. This approach enables a sensitivity study of mass flows of granular matter inside a CFB facility. Some computational results from this population balance model obtained for a supercritical CFB reactor are presented that show consistency with the operational data for large-scale CFB units.

Graphical abstract

Keywords

Bed inventory mass; Mass flow of solids; Circulating fluidized bed; Population mass balance model; Sensitivity analysis

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