检索结果-南通市图书馆

Research progress and prospects of coal petrology and coal quality in China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2020年第2期7卷 273-287页

作者： yuegang tang Ruiqing Li Shaoqing Wang College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing100083China

Clean utilization of coal depends on the quality of raw coal,which depends on the coal-forming parent materials(petrology and chemical composition of coal),the multiple media of the coal-forming environment,and some epigenetic conditions,such as thermal evolution(coalification),magmatic hydrothermal fluid,*** on the research results of predecessors and prediction studies of coal resources since the founding of China,the present status of research on coal petrology,coal quality,coal metamorphism,and coal geochemistry in China is discussed in detail,with emphasis on research progress and the general situation of highly efficient and clean utilization of coal in the technical fields of coking,pyrolysis,combustion,gasification,and liquefaction,and the development prospects of coal petrology and coal quality in China are prospected.

关键词： Coal petrology Coal quality Coal metamorphism Coal geochemistry Research status Prospect

Effects of Coal Rank and High Organic Sulfur on the Structure and Optical Properties of Coal-based Graphene Quantum Dots

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2018年第3期92卷 1218-1230页

作者： tang yuegang HUAN Xuan LAN Chunyuan XU Miaoxin College of geoscience and Surveying Engineering China University of Mining & Technology (Beijing) Beijing 100083 China

Coal-based graphene quantum dots(GQDs) were successfully produced via a one-step chemical synthesis from six different coal ranks, from which two superhigh organic sulfur(SHOS) coals were selected as natural S-doped carbon sources for the preparation of S-doped GQDs. The effects of coal properties on coal-based GQDs were analyzed by means of high-resolution transmission electron microscopy(HRTEM), X-ray diffraction(XRD), Fourier transform infrared(FTIR) spectroscopy, X-ray photoelectron spectroscopy(XPS), ultraviolet-visible(UV-Vis) absorption spectroscopy, and fluorescence emission spectra. It was shown that all coal samples can be used to prepare GQDs, which emit bluegreen and blue fluorescence under ultraviolet light. Anthracite-based GQDs have a hexagonal crystal structure without defects, the largest size, and densely arranged carbon rings in their lamellae; the highrank bituminous coal-based GQDs are relatively reduced in size, with their hexagonal crystal structure being only faintly visible; the low-rank bituminous coal-based GQDs are the smallest, with sparse lattice fringes and visible internal defects. As the metamorphism of raw coals increases, the yield decreases and the fluorescence quantum yield(QY) initially increases and then decreases. Additionally, the surface of GQDs that were prepared using high-rank SHOS coal(high-rank bituminous coal) preserves rich sulfur content even after strong oxidation, which effectively adjusts the bandgap and improves the fluorescence QY. Thus, high-rank bituminous coal with SHOS content can be used as a natural S-doped carbon source to prepare S-doped GQDs, extending the clean utilization of low-grade coal.

关键词： coal graphene quantum dots coal rank organic sulfur China

A New Parameter of Cleanability to Determine the Clean Potential of Coal Resources

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2017年第6期91卷 2338-2339页

作者： tang yuegang YANG Shuting WANG Xiaoshuai School of Geoscience and Survey Engineering China University of Mining & Technology

Objective This work is based on analysis on large numbers of coal data such as the latest national coal potential evaluation data and previous data published by REN Deyi, tang Xiuyi and LU Xukun, and the evaluation methods of clean potential of coal resources proposed by predecessors. It is found that previous method rank coal is only in accordance with raw coal or washed coal, which fail to take full account of the changes in elements before and after coal washing. Some elements can be removed by washing or other methods, and others may be even enriched after the coal is washed. For this reason, this work defined a new parameter of cleanability and developed its calculation formula to determine the clean potential of coal resources. Cleanability is a comprehensive indicator based on the removal rate of each indicator harmful element in coal. The clean potential of coal is proportional to the value of cleanability. The higher the cleanability value is, the better the clean potential is, and vice versa.

关键词： Cleanability to Determine the Clean Potential of Coal

Geochemical Behavior and Enrichment Mechanisms of Arsenic in Low-Rank Coal,Baiyinhua Depression,Erlian Basin

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第6期98卷 1574-1585页

作者： DAI Guobiao tang yuegang LIU Ao WANG Xiaoshuai LI Ruiqing College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing 100083China

In this study,the abundance of trace elements in the Baiyinhua depression coal and its relationship with the coal depositional environment was examined.(1)The content of arsenic in the Baiyinhua depression coal is that of a typically high arsenic coal from the late Mesozoic of *** average arsenic content of Baiyinhua coal is 24.93 times,the highest being 132.71 times,that of Chinese *** rank is not a controlling factor affecting arsenic enrichment in coal.(2)Arsenic is primarily enriched in the syngenetic and diagenetic stages,the enrichment being most obvious in the syngenetic stage,with the intrusion of a magmatic-hydrothermal solution in the epigenetic stage also providing rich sources of arsenic.(3)The Baiyinhua coal-forming plant material is mainly woody *** coal seam was covered with deep water,the oxygen supply was very weak,the bacteria very few,the sedimentary environment of the swamp relatively calm and the degree of damage to the woody plants is very *** minerals in the coal are mainly quartz and clay *** coal ash yield of Baiyinhua is small,with SiO2,Al2O3,MgO,K2O,TiO2,MnO and P2O5 mainly being combined in the inorganic minerals of the coal.

关键词： arsenic-rich coal Baiyinhua Depression trace elements geochemical origin

Clean coal geology in China:Research advance and its future

在线全文

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2020年第2期7卷 299-310页

作者： Xiaoshuai Wang yuegang tang Shaoqing Wang Harold HSchobert College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing100083China The EMS Energy Institute The Pennsylvania State UniversityUniversity ParkPennsylvania16802United States Schobert International LLCJordanMinnesota55352United States

In China,the connection between coal utilization and environmental pollution has been increasingly evident due to the rapid growth in energy *** coal technology(CCT)is one of the effective methods to address coal-associated ***,CCT needs the practical and theoretical support of clean coal geology(CCG).In this paper,a new definition of CCG is proposed,based on the definitions of coal,coal geology,and CCT,combined with the development of national *** is the discipline comprehensively researching the genesis,nature,distribution,cleaning potential,clean utilization and environmental effects of resources(coal,coal bed methane,and other coal-associated resources)that can be cleaned by *** research content of CCG is discussed from different aspects,such as cleaning potential evaluation,geological guarantee for coal mining,ash yields and sulfur contents,trace elements,pollution caused by coal,and mine *** progress of CCG in China is also briefly divided into four stages and ***,scientific problems in CCG are summarized and an outlook for CCG is given.

关键词： Clean coal Clean coal geology Research content Progress China

黔西晴隆矿区晚二叠世煤地球化学变异的地质成因

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

地质论评 2005年第2期51卷 163-168页

作者：李大华唐跃刚中国矿业大学资源与地球科学系

运用仪器中子活化分析 (INAA )、电离耦合等离子体质谱 (ICP- MS)、电离耦合等离子体原子发射光谱 (ICP- AES)、X射线荧光光谱 (XRF)、冷原子吸收光谱 (CV- AAS)、离子选择性电极法 (ISE)、逐级化学提取试验 (SCEE)等 ,结合带能谱仪的... 详细信息

运用仪器中子活化分析 (INAA )、电离耦合等离子体质谱 (ICP- MS)、电离耦合等离子体原子发射光谱 (ICP- AES)、X射线荧光光谱 (XRF)、冷原子吸收光谱 (CV- AAS)、离子选择性电极法 (ISE)、逐级化学提取试验 (SCEE)等 ,结合带能谱仪的扫描电镜 (SEM- EDX)和 MPV- III显微镜下观察的煤岩学特征的分析 ,对贵州晴隆矿区上二叠统含煤岩系 8号煤层中微量元素的含量和赋存特征及其影响因素进行了研究。发现该煤层中 Cu(2 6 3.4μg/ g)、Cr(1 5 4 .2μg/ g)、Hg(0 .86μg/ g)、Mo(82 .4 7μg/ g)、Ni(6 3.3μg/ g)、Pb(2 0 0 .4μg/ g)、Se(4.2 5μg/ g)、U(1 5 4 .8μg/ g)、Zn(2 1 4 .6μg/ g)和 Zr(75 4 .3μg/ g)等元素异常富集 ;而 As和 F的含量不高 ,其含量分别为 1 .5 8μg/ g和 83.4μg/ g。逐级化学提取结果显示 ,该煤层中 Hg、Mo、Ni、Pb、Se和 Zn元素主要赋存在低温热液成因的黄铁矿脉中 ;Cr、U和 Zr主要存在于粘土矿物中 ,其中 Cr和 Zr可能与康滇古陆陆源碎屑供给有关 ;Cu不仅与粘土矿物有关 ,而且也和煤中黄铁矿有关。表明低温热液流体和陆源碎屑供给对该煤中主要微量有害元素的含量和赋存特征起了决定作用。

关键词：地质成因地球化学晚二叠世矿区等离子体原子发射光谱仪器中子活化分析离子选择性电极法 X射线荧光光谱冷原子吸收光谱变异黔西等离子体质谱逐级化学提取微量有害元素赋存特征粘土矿物陆源碎屑中微量元素

在线全文

学校读者我要写书评

暂无评论

晚二叠世树皮煤(体)的结构和反应性

煤炭学报 2022年第4期47卷 1596-1607页

作者：王绍清林雨涵唐跃刚中国矿业大学(北京)地球科学与测绘工程学院北京100083

自从1933年谢家荣报道江西乐平地区典型树皮煤以来,树皮煤(体)因其具有特殊的化学性质,引起了广泛关注。典型的树皮煤和树皮体主要存在于中国南方晚二叠世,尽管在树皮煤(体)化学性质方面已经取得了一些重要的研究进展,但关于其结构特征... 详细信息

自从1933年谢家荣报道江西乐平地区典型树皮煤以来,树皮煤(体)因其具有特殊的化学性质,引起了广泛关注。典型的树皮煤和树皮体主要存在于中国南方晚二叠世,尽管在树皮煤(体)化学性质方面已经取得了一些重要的研究进展,但关于其结构特征和热反应性缺乏系统研究,直接影响了树皮煤的合理利用。通过结合已有的大量参考文献和课题组的研究数据,围绕树皮煤和树皮体的结构和热反应性方面,进行了细致的总结与分析,重点探讨了树皮煤(体)的化学组成、有机地球化学特征、化学结构特征和热反应性,重新分析了对树皮煤定义的界定,推测建立了树皮煤化学结构与植物前驱体化学结构之间的关系图,指出了树皮煤(体)的元素组成方面至少表现出4点特殊性质:高氢含量、高H/C原子比、高挥发分以及高硫含量。结构上主要讨论了树皮体的物理结构和化学结构2方面,表明了树皮体最明显的化学结构特征是具有丰富的脂肪族结构,在镜质组反射率从0.67%增加到1.12%,树皮体的形态结构逐渐由纤维状向不规则网状结构演化,其定向性排列越来越强,与镜质组的结构演化特征相似。树皮煤(体)具有许多异常的热行为,如强烈的热解作用、超高的基氏流动度、良好的生烃潜力和液化性能。最后对树皮煤的进一步利用途径提出了建议,也指明了树皮煤(体)下一步需要解决的问题。

关键词：树皮煤树皮体化学组成化学结构热反应有机地球化学

云南省昭通市燃煤中氟的释放规律及其环境效应研究

在线全文

学校读者我要写书评

暂无评论

中华地方病学杂志 2015年第8期34卷 569-572页

作者：李玲雒昆利唐跃刚中国矿业大学(北京)地球科学与测绘工程学院北京100083 中国科学院地理科学与资源研究所资源工程与环境修复研究室

目的探讨燃煤污染型氟中毒病区燃煤中氟的实际燃烧释放规律及其环境效应.方法在云南省昭通市采集24户农户家的煤、拌煤粘土、煤泥、煤渣以及烘烤前后玉米样品,采用高温燃烧-氟离子选择电极法分析样品中氟含量,计算煤泥氟的燃烧释放量... 详细信息

目的探讨燃煤污染型氟中毒病区燃煤中氟的实际燃烧释放规律及其环境效应.方法在云南省昭通市采集24户农户家的煤、拌煤粘土、煤泥、煤渣以及烘烤前后玉米样品,采用高温燃烧-氟离子选择电极法分析样品中氟含量,计算煤泥氟的燃烧释放量及释放率,并分析煤泥中氟释放量与烘烤玉米中氟增加量的关系.结果拌煤粘土中氟含量的中位数为1 087.1 mg/kg,范围为266.4～2 536.7 mg/kg;煤泥中氟含量的中位数为308.8 mg/kg,范围为115.9～ 635.0 mg/kg;煤泥燃烧氟释放量的中位数为248.2 mg/kg,范围为63.5～432.2 mg/kg,燃烧释放率的平均值为73.8％,范围为30.3％～91.5％.新鲜玉米中氟含量的中位数为1.31mg/kg,范围为0.43～ 2.00 mg/kg;烘烤玉米中氟含量的中位数为10.49 mg/kg,范围为2.21～44.88 mg/kg,玉米烘烤后氟增加量范围为0.90～44.46 mg/kg.拌煤粘土中的氟含量与煤泥燃烧氟释放量呈正相关（r=0.714,P＜ 0.01）;煤泥燃烧氟释放量与烘烤前后玉米氟增加量未见相关（r=-0.155,P＞0.05）.结论粘土是燃煤中氟污染物释放的重要来源.烘烤玉米中氟污染程度不是由煤泥中氟释放量所单独决定的,可能还受到多种因素的影响.

关键词：煤氟氟中毒,牙

在线全文

学校读者我要写书评

暂无评论

煤炭开采对周边农业发展影响的损失分析

农业技术经济 2009年第4期 99-102页

作者：李丛蔚唐跃刚中国矿业大学(北京)资源与安全工程学院北京100087

煤炭生产对周边农业生产的影响主要体现在两方面:一是土地塌陷造成土地水土流失和养分渗漏;二是采煤污染了周围的农用水资源使农作物减产甚至绝产。根据这两类损失,本文提出了相关的损失评估模型,并以晋煤集团所属矿区为例进行了实证研... 详细信息

煤炭生产对周边农业生产的影响主要体现在两方面:一是土地塌陷造成土地水土流失和养分渗漏;二是采煤污染了周围的农用水资源使农作物减产甚至绝产。根据这两类损失,本文提出了相关的损失评估模型,并以晋煤集团所属矿区为例进行了实证研究,为相关研究提供了借鉴。

关键词：煤炭生产周边农业损失研究