Title

Assessment of the mathematical modelling of thermophysical properties during the pyrolysis of coking coals.

Authors

Kumaresh, Selvakumar; Kim, Man Young

Abstract

In order to understand the coking process, the effects of thermophysical properties were investigated during coal carbonization, which significantly affects the heat transfer in the coke oven process. Based on Einstein's quantum theory and temperature-dependent fits, the specific heat of coal was examined to ascertain its behavior during thermal degradation. The endothermic reactions reported were directly responsible for the influence of high specific heat, and the secondary volatile species rising at high temperatures proves the significance of an exothermic reaction. The effect of porosity due to lump coke and fissures establishes the characteristics of the semi-coke porous structure, and an increase in overall porosity raises the true density of the coke material. The thermal conductivity explains the correlation between particulate and semi-coke charges, and thereby the abrupt increase in conductivity was due to the radiative contribution after the resolidification of coal. Finally, some concluding remarks were presented.

Subjects

EINSTEIN, Albert, 1879-1955; ENDOTHERMIC reactions; COKING coal; COKE (Coal product); QUANTUM theory; EXOTHERMIC reactions

Publication

Journal of Mechanical Science & Technology, 2024, Vol 38, Issue 9, p5161

ISSN

1738-494X

Publication type

Academic Journal

DOI

10.1007/s12206-024-0848-8