{"title":"Assessment of the mathematical modelling of thermophysical properties during the pyrolysis of coking coals","authors":"Selvakumar Kumaresh, Man Young Kim","doi":"10.1007/s12206-024-0848-8","DOIUrl":null,"url":null,"abstract":"<p>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.</p>","PeriodicalId":16235,"journal":{"name":"Journal of Mechanical Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Mechanical Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12206-024-0848-8","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍：
The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering.
Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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