Modelling of the pulverized coal plasma preparation for combustion

Abstract

The main goal of this research is to show the action of pulverized coal in the plasma chamber throughcomputer simulation and numerical experiments carried out with the aid of developed well knownthermodynamic, kinetic and multi dimensional computational fluid dynamics based on mathematicalmodels. The data needed for the validation of the numerical procedure were obtained from a cylindricaldirect flow burner equipped with a plasmatron (plasma generator) with 100kW of electric power andmounted on a full-scale boiler (Gusinoozersk TPP, Eastern Siberia). The experiments were carried outusing ‘Tugnuisk’ bituminous coal. Two mathematical models were employed: the one (‘1D Plasma-Coal’) being one-dimensional, but with an emphasis on complex chemistry, the other (3D FAFNIR) beingfully three-dimensional with emphasis on the geometry and overall combustion processes. 1D Plasma-Coal numerical experiments gave the predicted temperatures and velocities of gas and solids along thechamber length; while the concentrations of the gas components (CO, CO2, H2, CH4, C6H6, N2, H2O)were reported for the chamber exit. The degree of coal gasification showed that 54% of coal carbon wasgasified within the plasma chamber. 3D numerical results for plasma jet spreading length were in goodagreement with the measured data, while the temperature profiles within the plasma chamber were overpredicted. The predictions of main species concentrations reveal that oxygen was completely consumedwith the exit product stream consisting of combustible gases, un-burnt volatiles and char particles.
How to Cite
MESSERLE, V.; USTIMENKO, A.. Modelling of the pulverized coal plasma preparation for combustion. Physical Sciences and Technology, [S.l.], v. 8, n. 1-2, p. 14-25, july 2021. ISSN 2409-6121. Available at: <https://phst.kaznu.kz/index.php/journal/article/view/246>. Date accessed: 19 jan. 2022. doi: https://doi.org/10.26577/phst.2021.v8.i1.02.
Section
Plasma Physics and Related Technology