Abstract
Fluent reaction flow has been widely used in the simulation of uniform or non-uniform reaction flow including boilers, gas turbines and rocket engines. Flow field characteristics, material concentration and pollutant generation can be obtained (Travin et al. in Advances in LES of complex flows, vol 65, pp 239–254, 2002). In order to study the combustion stability of coal slurry in the double cone burner, numerical investigation based on Reynolds-Averaged Navier Stokes (RANS) equations (Chen and Ghoniem in Energy Fuels 26:4783–4798, 2012) was explored in this paper. Besides, a reverse jet device for atomization is set up in the pulverized coal double cone reverse jet burner. and a test platform to verify the numerical simulation results is obtained. The simulated data are verified by the experimental data. The results show that a numerical simulation platform for coal slurry combustion process has been established. Based on the test and calculation results obtained, the pulverized coal double cone burner is optimized for the coal slurry combustion. The technical measures include that the diameter of the burner outlet is reduced from 500 to 450 mm, the angle of the front cone is increased from 7° to 9°, the swirling flow strength is increased by 20%, and the preheating temperature of the combustion air is increased from 20 to 150 °C. The simulation results show that after optimization, the temperature in the burner increases by 120 °C, the combustion process is effectively strengthened, and the front cone pressure is reduced. the temperature in the burner can be increased, and the combustion of coal slurry can be more efficient. Therefore, the adoption of technical means can effectively solve the problem of coal slurry combustion organization.
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This work was supported by the Coal Science and Technology Development Fund (NO. 2018CX02).
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RiGen, M., Shi, Y., JianHang, L. (2022). Numerical Investigation on Combustion Stability of Coal Slurry in the Double Cone Burner. In: Lyu, J., Li, S. (eds) Clean Coal and Sustainable Energy. ISCC 2019. Environmental Science and Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-1657-0_33
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