—This paper presents a three-dimensional
computational fluid dynamics (CFD) modeling study carried
out for a rotary cement kiln withal multi-channel burner with
swirl and high momentum air components. The simulations are
performed using the commercial CFD software ANSYS
FLUENT, version 13.0, and are carried out for coal as well as
for meat and bone meal (MBM) combustion using the
eddy-dissipation model for combustion. Steady-state solutions
are obtained using the Lagrangian approach for the particle
phase and the Eurasian approach for the continuous phase. The
turbulence is modeled by the RNG k-ε model, and gas-phase
radiation is modeled by the P1 radiation model. The effect of
MBM fuel properties on combustion characteristics such as
temperature, fuel devolatilization, volatiles and char burning,
in comparison with coal, are presented and discussed. It was
found that MBM combustion products temperatureis300K
lower than that of coal, and the char burnout of MBM is 83%.
This poor burnout is mainly due to bigger MBM particles.
—CFD, combustion, meat and bone meal, rotary
The authors are with Telemark University College, Department of
Process, Energy and Environmental Technology, Faculty of Technology,
Kjølnes Ring 56, Post box 203, N-3901 Porsgrunn, Norway (e-mail:
Cite: W. K. Hiromi Ariyaratne, Anjana Malagalage, Morten C. Melaaen, and Lars-André Tokheim, "CFD Modeling of Meat and Bone Meal Combustion in a
Rotary Cement Kiln," International Journal of Modeling and Optimization vol. 4, no. 4, pp. 263-272, 2014.