焦煤热解过程中热物理性质数学建模评估

IF 1.5 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Selvakumar Kumaresh, Man Young Kim
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引用次数: 0

摘要

为了了解炼焦过程,研究了煤炭碳化过程中热物理性质的影响,因为煤炭碳化对焦炉过程中的传热有很大影响。根据爱因斯坦量子理论和温度相关拟合,研究了煤的比热,以确定其在热降解过程中的行为。所报告的内热反应是高比热影响的直接原因,而高温下二次挥发物的上升证明了放热反应的重要性。块焦和裂缝造成的孔隙率影响确定了半焦多孔结构的特征,整体孔隙率的增加提高了焦炭材料的真实密度。热导率解释了颗粒和半焦装料之间的相关性,因此热导率的突然增加是由于煤炭分解后的辐射作用。最后,提出了一些结论性意见。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of the mathematical modelling of thermophysical properties during the pyrolysis of coking coals

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.

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来源期刊
Journal of Mechanical Science and Technology
Journal of Mechanical Science and Technology 工程技术-工程:机械
CiteScore
2.90
自引率
6.20%
发文量
517
审稿时长
7.7 months
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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