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| 1 | 高变质煤HRTEM图像中芳香晶格条纹的MASK R-CNN识别显示文摘近年来,人工智能的兴起推动了我国煤炭行业在绿色环保、智能生产等方面的发展。针对芳香晶格条纹识别过程中存在的解译慢、周期长和误判率高等问题,提出了一种基于MASK R-CNN的智能提取方法。该智能提取方法通过调整特征参数和优化网络结构,对条纹特征的识别算法进行改进:①跳过前期预处理过程,以端到端的模式进行芳香晶格条纹的特征提取训练,实现从原始HRTEM中自动识别芳香晶格条纹的功能;②突破常规神经网络提取目标物外轮廓的思维桎梏,实现对线要素的快速准确分割。以人工解译结果为标准,通过智能提取结果和传统提取结果在精度评价、识别效果和参数提取等方面的对比,验证该智能提取方法的有效性。结果表明,在识别精度方面,智能提取方法的准确率、精准率、召回率和交并比的数值为91.2%,85.2%,83.4%和72.9%,分别高于传统提取方法的89.9%,62.1%,75.4%和51.6%;在识别效果方面,智能提取方法对细节的处理更加智能,提取的线条连贯性和平滑性更好,同时噪音更少;在长度和取向等参数的统计分析方面,智能提取结果与人工解译结果在取向和长度分布图上的匹配度更高。综上所述,该智能提取方法通过MASK R-CNN进行芳香晶格条纹的自动识别,降低工作成本,提高工作效率,为煤大分子结构研究提供更快捷可靠的数据支持。 | 王绍清 常方哲 陈昊 王小令 李雪琦 | 2021 | 煤炭学报2021，46，2： | 4 |
| 2 | Technology strategies to achieve carbon peak and carbon neutrality for China's metal mines显示文摘Greenhouse gas(GHG)emissions related to human activities have significantly caused climate change since the Industrial Revolution.China aims to achieve its carbon emission peak before 2030 and carbon neutrality before 2060.Accordingly,this paper reviews and discusses technical strategies to achieve the“dual carbon”targets in China’s metal mines.First,global carbon emissions and emission intensities from metal mining industries are analyzed.The metal mining status and carbon emissions in China are then examined.Furthermore,advanced technologies for carbon mitigation and carbon sequestration in metal mines are reviewed.Finally,a technical roadmap for achieving carbon neutrality in China’s metal mines is proposed.Findings show that some international mining giants have already achieved their carbon reduction targets and planned to achieve carbon neutrality by 2050.Moreover,improving mining efficiency by developing advanced technologies and replacing fossil fuel with renewable energy are two key approaches in reducing GHG emissions.Green mines can significantly benefit from the carbon neutrality process for metal mines through the carbon absorption of reclamation vegetations.Geothermal energy extraction from operating and abandoned metal mines is a promising technology for providing clean energy and contributing to the carbon neutrality target of China’s metal mines.Carbon sequestration in mine backfills and tailings through mineral carbonation has the potential to permanently and safely store carbon dioxide,which can eventually make the metal mining industry carbon neutral or even carbon negative. | Qifeng Guo Xun Xi Shangtong Yang Meifeng Cai | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，4： | 2 |
| 3 | 断裂体系对页岩气保存的影响——以滇东北地区五峰—龙马溪组为例显示文摘四川盆地周缘复杂构造区断裂体系的封闭性对页岩气保存至关重要。四川盆地西南缘滇东北地区五峰组—龙马溪组富有机质泥页岩厚度大、TOC丰度高、有机质成熟度适中,具备良好的生烃物质基础及潜力,但不同钻井储层含气显示差异显著,区域断裂构造对页岩气保存产生重要影响。基于区域页岩气地质调查及二维地震资料,通过不同含气性典型页岩气井岩心裂缝统计,结合裂缝中流体包裹体的测试,探讨该区断裂体系对页岩气保存的影响。结果表明:滇东北地区受到多期构造运动影响,断裂以逆冲走滑性质为主,近平行发育,多期活动;在距一级和二级断裂距离大于5 km、距三级断裂距离大于3 km,距四级断裂距离大于1.5 km和相对简单的断裂组合下,页岩气保存条件受断裂影响较小;断裂控制储层裂缝的发育,并促进层间缝和高角度构造缝的发育,形成复杂的裂缝网络,破坏了页岩储层自封闭性,不利于页岩气保存;中—新生代构造运动控制下本区主要断裂表现为燕山中—晚期和喜马拉雅早—中期持续活动型;与四川盆地内改造强度相对较弱的长宁—威远页岩气田不同,滇东北地区中—新生代水平挤压褶皱/冲断是地层抬升剥蚀的重要作用机制,褶皱强烈、断裂密集发育对页岩气的成藏保存影响强烈。基于断裂发育特征、构造组合样式、五峰—龙马溪组地层埋深、倾角等地质控制因素,提出逆断层侧向遮挡宽缓向斜翼部和逆冲断层间传播褶皱高位2种页岩气富集保存有利构造样式,是四川盆地周缘复杂构造区页岩气勘探开发的首选方向。 | 向杰 陈尚斌 王阳 蒋天国 薛晓辉 王笑奇 朱炎铭 | 2021 | 煤炭学报2021，46，11： | 2 |
| 4 | Fabrication and performance of atmospheric plasma sprayed solid oxide fuel cells with liquid antimony anodes显示文摘A solid oxide fuel cell(SOFC)with a liquid antimony anode(LAA)is a potential energy conversion technology for the use of impurity-containing fuels.Atmospheric plasma spraying(APS)technology has become a promising LAASOFC preparation method because of its economy and convenience.In this paper,button SOFCs with different cathode materials and ratios of pore former were prepared by the APS method and were operated at 750C.The effect of the cathode structure on the electrochemical performance of the LAA-SOFCs was analyzed,and an optimized spraying method for LAA-SOFCs was developed.A tubular LAA-SOFC was prepared using the APS method based on the optimized spraying method,and a peak power of 2.5 W was reached.The tubular cell was also measured at a constant current of 2 A for 20 h and was fed with a sulfur-containing fuel to demonstrate its impurity resistance and electrode stability. | Yidong Jiang Wenfei Mo Tianyu Cao Yixiang Shi Ningsheng Cai | 2021 | International Journal of Coal Science & Technology2021，8，3： | 0 |
| 5 | Catalytic hydrogenation of insoluble organic matter of CS_(2)/Acetone from coal over mesoporous HZSM-5 supported Ni and Ru显示文摘Four supported catalysts,nickel and ruthenium on a HZSM-5 support,were prepared by equal volume impregnation and in-situ decomposition of carbonyl nickel.The properties of catalysts were investigated by catalytic hydro-conversion of 2,2′-dinaphthyl ether as the model compound and extraction residue of Naomaohu lignite as the sample under an initial H2 pressure of 5 MPa and temperature at 150℃.According to the catalytic hydroconversion results of the model compound,Ni−Ru/HZSM5 exhibited the best catalytic performance.It not only activated H2 into H…H,but also further heterolytically split H…H into immobile H‒attached on the acidic centers of Ni−Ru/HZSM-5 and relatively mobile H+.Catalytic hydro-conversion of the extraction residue from Naomaohu lignite was further examined over the optimized catalyst,Ni−Ru/HZSM-5.Detailed molecular compositions of products from the extraction residue with and without hydrogenation were characterized by Fourier transform infrared spectroscopy and gas chromatography/mass spectrometry.The analytical results showed that the oxygencontaining functional groups in products of hydrogenated extraction residue were obviously reduced after the catalytic treatment.The relative content of oxygenates in the product with catalytic treatment was 18.57%lower than that in the product without catalytic treatment. | Reyila Abuduwayiti Feng-Yun Ma Xing Fan | 2022 | Frontiers of Chemical Science and Engineering2022，16，10： | 0 |
| 6 | Kinetic and thermodynamic investigations of CO2 gasification of coal chars prepared via conventional and microwave pyrolysis显示文摘This study examined an isothermal CO2 gasification of four chars prepared via two different methods,i.e.,conventional and microwave-assisted pyrolysis,by the approach of thermogravimetric analysis.Physical,chemical,and structural behaviours of chars were examined using ultimate analysis,X-ray diffraction,and scanning electronic microscopy.Kinetic parameters were calculated by applying the shrinking unreacted core(SCM)and random pore(RPM)models.Moreover,char-CO2 gasification was further simulated by using Aspen Plus to investigate thermodynamic performances in terms of syngas composition and cold gas efficiency(CGE).The microwave-induced char has the largest C/H mass ratio and most ordered carbon structure,but the smallest gasification reactivity.Kinetic analysis indicates that the RPM is better for describing both gasification conversion and reaction rates of the studied chars,and the activation energies and pre-exponential factors varied in the range of 78.45–194.72 kJ/mol and 3.15–102,231.99 s−1,respectively.In addition,a compensation effect was noted during gasification.Finally,the microwave-derived char exhibits better thermodynamic performances than the conventional chars,with the highest CGE and CO molar concentration of 1.30%and 86.18%,respectively.Increasing the pyrolysis temperature,gasification temperature,and CO2-to-carbon molar ratio improved the CGE. | Peng Jiang Yang Meng Ziyao Lu Lan Xu Gang Yang Xiang Luo Kaiqi Shi Tao Wu | 2020 | International Journal of Coal Science & Technology2020，7，3： | 0 |
| 7 | 基于碳平衡的碳排放智能化检测系统在火电企业的应用显示文摘目前火电企业针对入炉煤、燃烧灰渣样品主要依靠人工采集、制备和化验,现有的自动化系统设备自动化程度及工作效率无法满足入炉煤快速采制化需求,煤质检测分析设备精度及效率尚有提升空间,因而提出1种基于碳平衡的碳排放智能化检测系统并研究其在火电企业的应用很有必要。从碳平衡法的原理及技术框架、高效机器人燃煤自动制备与化验技术以及基于多目标视觉检测的燃煤管理现场行为分析技术等方面阐述基于碳平衡的碳排放智能化监测,并结合碳平衡法的关键指标及其精准测量以探究基于碳平衡的碳排放智能化监测系统的应用。现场应用结果表明,该智能化检测系统采用先进的多目标视觉检测与行为分析技术、机器人技术、物联网技术、信息处理技术,对燃煤电厂入炉煤及灰渣样品进行快速采集制备,实现入炉煤质数据和燃烧灰渣中碳含量的精准快速测量,可用于科学指导配煤掺烧最优方案智能生成,实现碳排放精准核算及最优减碳掺烧,助力火电企业双碳目标实现。 | 李军 常瑞丽 孙绍哲 杨勇 | 2023 | 煤质技术2023，38，1： | 0 |
| 8 | Apparent activation energy of mineral in open pit mine based upon the evolution of active functional groups显示文摘This study aimed to investigate the mechanism of mineral spontaneous combustion in an open pit. On the study of coal and mineral mixture in open pit mines, as well as through the specifc surface area and Search Engine Marketing (SEM) experiments, the specifc surface area and aperture characteristics of distribution of open pit coal sample and pit mineral mixture samples were analyzed. Thermal analysis experiments were used to divide the oxidation process was divided into three stages, and the thermal behavior characteristics of experimental samples were characterized. On the basis of the stage division, we explored the transfer law of the key active functional groups of the experimental samples. The apparent activation energy calculation of the key active groups, performed by combining the Achar diferential method with the Coats–Redfern integral method, microstructural and oxidation kinetic properties were revealed. The resulted showed that the mixed sample had high ash, the fxed carbon content was reduced, the specifc surface area was far lower than the raw coal, the large aperture distribution was slightly higher than the medium hole, the micropore was exceptionally low, the gas adsorption capacity was weaker than the raw coal, the pit coal sample had the exceedingly more active functional groups, easy to react with oxygen, more likely to occur naturally, and its harm was relatively large. The mixed sample contained the highest C–O–C functional group absorbance. The functional groups were mainly infuenced by the self-OH content, alkyl side chain, and fatty hydrocarbon in the sample. The main functional groups of the four-like mixture had the highest apparent activation energy, and the two reactions were higher in the low-temperature oxidation phase. | Shipng Lu Jingyu Zhao Jiajia Song Jiaming Chang Chi‑Min Shu | 2023 | International Journal of Coal Science & Technology2023，10，4： | 0 |
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