Experimental Measuring and CFD Modeling of Pulverized Coal Burnout in Drop Tube

• Autorzy: Paluska R. , Bojko M. , Horak J.
• Języki publikacji: EN

Abstrakty

EN

An experimental facility and methodology of pulverized coal thermokinetic properties determination with the use of mathematical modeling is described in this paper. Thermokinetic properties as a mean for better understanding the nature of combustion process can be determined by an experiment using a Drop Tube Test Facility (DTTF). The test provides conditions occurring in a pulverized coal fired boiler by emulated oxygen concentration, temperature and reaction gas speed. The test presented in the paper was built recently at the Energy Research Center. Experimental data acquired from the tests are used in mathematical modeling using the code Fluent. The ANSYS Fluent 12.1 code can define different mathematical models of volatile evolution (devolatilization model) and char combustion (kinetic/diffusion surface reaction rate model) to simulate coal combustion. In this paper, a char combustion model is defined with specification of a basic equation for char combustion reaction rate. Resulting values are evaluated by decrease of pulverized coal char in the drop tube in dependence of time. The process of burnout is evaluated for comparison with experimental tests. Results acquired from the adjusted mathematical model should provide more detailed information about the combustion process in a real operation.

Słowa kluczowe

EN

pulverized coal burnout; CFD Computational Fluid Dynamics

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2010
• Tom: Vol. 30 nr 3
• Strony: 193--201
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Paluska R.

autor

Bojko M.

autor

Horak J.

• Energy Research Center of VSB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava-Poruba, Czech Republic,

Bibliografia

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