energies-logo

Journal Browser

Journal Browser

Advanced Technologies for Energy Exploitation of Coals 2021

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H3: Fossil".

Deadline for manuscript submissions: closed (20 March 2022) | Viewed by 6127

Special Issue Editors


E-Mail Website
Guest Editor
Institute of Innovation, Science and Sustainability, Federation University Australia, Ballarat, VIC 3350, Australia
Interests: rock mechanics; rock blasting; geomechanics; soft computing
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Deep Earth Energy Laboratory, Department of Civil Engineering, Monash University, Melbourne, Australia
Interests: geomechanics; CO2 sequestration; shale gas; coal seam gas; geotherml energy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Energy, water, and food are three major elements to ensure human existence. The whole world has entered into a new historical period, where clean and low-carbon energy is undoubtedly required. Coal is definitely an indispensable source of energy necessary for the techno-economic progress of any country. The burning of coal releases numerous nitrous, carobon, and sulphur oxides vis-à-vis organic and inorganic compounds, which are hazardous for the environment. It is a fact that these emissions result in air contamination, including climate change and local acid rain problems. Coal has been widely studied by various researchers to explore the possibilities of economical and eneviormentally friendly energy sources, and viable metals. Coal has also been used comprehensively to fabricate new nanomaterials in laboratories, as well as waste treatment and clean-coal technologies. Thus, this Special Issue aims to encourage researchers to address the technological advancements that have led to more efficient combustion of coal with reduced emissions of sulphur, carbon, and nitrogen oxide. We are looking for contributions in the following areas:

  1. Coal as sustiabnle energy sources;
  2. Underground coal gassifications;
  3. Advanced coal mining technology.
Dr. Manoj Khandelwal
Prof. Dr. P.G. Pathegama Ranjith
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Energy 
  • Coal 
  • Environmental hazards 
  • Gasification 
  • Mining 
  • Sustainability

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

11 pages, 3139 KiB  
Article
Comparison of Tar Samples from Reaction Zone and Outlet in Ex-Situ Underground Coal Gasification Experiment
by Lele Feng, Maifan Dong, Yuxin Wu and Junping Gu
Energies 2021, 14(24), 8570; https://doi.org/10.3390/en14248570 - 19 Dec 2021
Cited by 3 | Viewed by 1735
Abstract
Tar remaining in the gasification cavity during underground coal gasification (UCG) is an important pollution source, while the reported studies only focus on the tar behavior at the outlet. The present work aims to compare the tar properties from the reaction zone and [...] Read more.
Tar remaining in the gasification cavity during underground coal gasification (UCG) is an important pollution source, while the reported studies only focus on the tar behavior at the outlet. The present work aims to compare the tar properties from the reaction zone and the outlet, analyze the tar evolution during gasification, and discuss possible measures to control tar pollution. Tar was sampled with a self-developed equipment from an ex-situ underground coal gasification experimental system and analyzed by GC-MS. The gas composition, temperature, and PM10 were also compared for the reaction zone and the outlet. Compared with the tar from reaction zone, the tar from outlet has a smaller percentage of high boiling point content, PAHs, C, O, N, S, Cl, Si, and a larger percentage of H. The PAHs percentage in tar at the outlet in this work is closer to the field data than the lab data from literature, indicating the experimental system gives a good simulation of tar behavior in underground coal gasification. Condensation due to a fast temperature drop is one of the main reasons for PAHs decreasing. Tar cracking and soot formation also cause the decrease of heavy tar, proven by the light gas and particulate matter results. Full article
(This article belongs to the Special Issue Advanced Technologies for Energy Exploitation of Coals 2021)
Show Figures

Figure 1

19 pages, 6235 KiB  
Article
Enrichment of Li–Ga–Zr–Hf and Se–Mo–Cr–V–As–Pb Assemblages in the No. 11 Superhigh Organic Sulfur Coal from the Sangshuping Coal Mine, Weibei Coalfield, Shaanxi, North China
by Jing Li, Peng Wu, Guanghua Yang, Lei Pan, Xinguo Zhuang, Xavier Querol, Natalia Moreno, Baoqing Li and Yunfei Shangguan
Energies 2020, 13(24), 6660; https://doi.org/10.3390/en13246660 - 17 Dec 2020
Cited by 7 | Viewed by 1535
Abstract
Superhigh organic sulfur(SHOS) coals have currently attracted great attention due to their typical depositional environments and formation history as well as their great negative impact on the ecosystem. This study investigated the geochemistry of the No. 11coalof the Late Carboniferous Taiyuan Formation from [...] Read more.
Superhigh organic sulfur(SHOS) coals have currently attracted great attention due to their typical depositional environments and formation history as well as their great negative impact on the ecosystem. This study investigated the geochemistry of the No. 11coalof the Late Carboniferous Taiyuan Formation from the Sangshuping coalmine, Hancheng miningarea, Weibei coalfield, Shaanxi, North China. The No. 11 coal is a high-sulfur coal with a large proportion of organic sulfur content (3.7 to 5.5%, avg. 4.4%) and belongs to typical SHOS coal. The high sulfur content in the Sangshuping coal mine has been mainly caused by the combined influences of seawater and hydrothermal fluids. The SHOS in No. 11 coal was formed in the Fe-poor and S-rich high-marine influenced occlusive environment. During the late coalification stage, a high proportion of pyritic sulfur was formed due to sufficient Fe supply from the Fe–S-rich epigenetic hydrothermal fluids. The No. 11 SHOS coal is enriched in Li–Ga–Zr–Hf and Se–Mo–Cr–V–As–Pb element assemblages. The sediment provenance of the Sangshuping coal mine is predominantly felsic–intermediate rocks from both the Yinshan and Qinling Oldland. However, the elevated concentrations of critical elements (Li, Ga, Zr, and Hf) in the No. 11 coal are primarily inherited from the Yinshan Oldland. The enrichment of the Se–Mo–Cr–V–As–Pb assemblage in No. 11 coal can be ascribed to the influence of both seawater and epigenetic hydrothermal activity. Full article
(This article belongs to the Special Issue Advanced Technologies for Energy Exploitation of Coals 2021)
Show Figures

Figure 1

26 pages, 8889 KiB  
Article
Enrichment of Nb-Ta-Zr-W-Li in the Late Carboniferous Coals from the Weibei Coalfield, Shaanxi, North China
by Jing Li, Xinguo Zhuang, Xavier Querol, Natalia Moreno, Guanghua Yang, Lei Pan, Baoqing Li, Yunfei Shangguan, Zhejun Pan and Bo Liu
Energies 2020, 13(18), 4818; https://doi.org/10.3390/en13184818 - 15 Sep 2020
Cited by 6 | Viewed by 2142
Abstract
Mineralogical and geochemical characteristics of coals provide crucial information on their potential clean, efficient, and integrated utilization. In this paper, the mineralogical and geochemical behaviors of the No. 5 coals of the Taiyuan Formation in the Weibei Coalfield, North China, were investigated, and [...] Read more.
Mineralogical and geochemical characteristics of coals provide crucial information on their potential clean, efficient, and integrated utilization. In this paper, the mineralogical and geochemical behaviors of the No. 5 coals of the Taiyuan Formation in the Weibei Coalfield, North China, were investigated, and their geological controlling factors were subsequently discussed. The minerals in the Weibei coals mainly consist of kaolinite (8.3%), calcite (5.0%), and pyrite (3.1%), with minor proportions of tobelite (2.9%), dolomite (1.7%), quartz (1.8%), and traces of siderite (0.4%) and gypsum (0.6%). Several critical elements, including Nb (19.8 mg/kg), Ta (3.6 mg/kg), Zr (71.0 mg/kg) and Li (32.3 mg/kg), occur at concentrations higher than those averages for world hard coals, making the Weibei coals potential sources of these critical elements. Several factors, terrigenous material, seawater invasion, and hydrothermal fluids are responsible for these mineralogical and geochemical characteristics. The L-type rare earth elements and yttrium (REE-Y) enrichment in the roofs and partings, Al2O3-TiO2 and Zr/TiO2-Nb/Y plots, and negative Eu and weak negative Ce anomalies in the Weibei coals indicate a felsic-intermediate dominated sediment provenance primarily derived from the Qilian-Qinling Oldland on the South. Marine bioclastic limestone, negative Ce and positive Y anomalies in coals imply the influence of seawater on the Weibei coals. Last but not least, the cleat-infilling and/or fracture-infilling calcite, pyrite, barite, and tobelite as well as the positive Eu and Gd anomalies, H-type, and M-type REE-Y enrichment patterns suggest the influence of hydrothermal fluids, which lead to re-distribution of some critical elements from roof and parting to the underlying coal seam. Full article
(This article belongs to the Special Issue Advanced Technologies for Energy Exploitation of Coals 2021)
Show Figures

Graphical abstract

Back to TopTop