Siberian Federal University

Issue

Journal of Siberian Federal University. Engineering & Technologies. 2021 14 (4)

Authors

Karpenok, Viktor I.; Murko, Vasily I.; Mastikhina, Vera P.; Loboda, Yulia A.

Contact information

Karpenok, Viktor I.: Siberian State Industrial University Novokuznetsk, Russian Federation; Murko, Vasily I.: Siberian State Industrial University Novokuznetsk, Russian Federation; ; Mastikhina, Vera P.: Siberian State Industrial University Novokuznetsk, Russian Federation; Loboda, Yulia A.: Tomsk State University Tomsk, Russian Federation

Keywords

coal-water slury; coal-water fuel; vortex adiabatic combustion chamber; thermodynamic and chemical analysis; combustion

Abstract

The article presents results of improvement of physicochemical model of coal-water fuel ignition and combustion processes, taking into account ash content and release of volatile substances of solid phase. In this case, model of ignition and combustion of two systems of atomized coal-water fuel: drops and pure coal particles is taken as a basis. As a result of the analysis, the influence of ash content of coal-water fuel on output of combustible gases and content of water vapor in furnace atmosphere was established. Based on comparison of the diffusion coefficients of gases and the calculated values of equilibrium constants of reaction in combustion zone, conclusion has been of the leading role of water vapor oxidation of carbon in vortex adiabatic furnace. Performed numerical calculations have shown that combustion process of the above inhomogeneous systems (droplets and particles) in an adiabatic furnace within a short time becomes identical. Concentrations of volatile substances, oxygen (O2) and carbon dioxide (CO2) in various sections of the furnace have been established

Pages

385–398

DOI

10.17516/1999-494X-0319

Paper at repository of SibFU

https://elib.sfu-kras.ru/handle/2311/141363

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).