Thermal stability of acidified coal under coupled pressure and temperature effects

IF 5.4 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-09-18 DOI:10.1016/j.tsep.2025.104124

Shaochuan Chen , Chengwu Li , Yun Lei , Fuchao Tian

引用次数: 0

Abstract

Acidification and permeability enhancement is an effective means to improve the permeability of coal seams, and with the increasing mining depth and ground temperature, in order to study the thermal stability of acidified coal under different adsorption pressures and temperatures, in this study, we used the Thermogravimetric Analysis-Differential Scanning Calorimetry (TG-DSC) technique and combined with X-ray diffraction (XRD) and industrial analytical experiments to investigate the thermal stability evolution patterns of acidified coal under different adsorption pressures and temperatures. The mass change and heat flow change of the acidified coal during the pyrolysis process were monitored by thermogravimetric analysis, pyrolysis kinetics, and thermal effect of the acidified coal were analyzed. The results can provide theoretical basis for the efficient utilization of acidified coal.

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压力和温度耦合作用下酸化煤的热稳定性

酸化增透是提高煤层渗透率的有效手段，随着开采深度和地温的增加，为了研究酸化煤在不同吸附压力和温度下的热稳定性，本研究采用热重分析-差示扫描量热（TG-DSC）技术，结合x射线衍射（XRD）和工业分析实验，研究了酸化煤在不同吸附压力和温度下的热稳定性演化规律。采用热重法监测酸化煤在热解过程中的质量变化和热流变化，分析酸化煤的热解动力学和热效应。研究结果可为酸化煤的高效利用提供理论依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.