scholarly journals The Variability of Mercury Content in Bituminous Coal Seams in the Coal Basins in Poland

Resources ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 127
Author(s):  
Justyna Auguścik-Górajek ◽  
Marek Nieć
Keyword(s):  
Coal Combustion ◽  
Bituminous Coal ◽  
Mercury Content ◽  
Limited Extent ◽  
Iron Sulfides ◽  
Coal Seams ◽  
Preliminary Assessment ◽  
Coal Basin ◽  
Coal Quality ◽  
Mercury Emission

The mercury content in bituminous coal in Poland varies depending on the coal basin. The highest of its concentrations are recorded in the Lower Silesian Coal Basin where this may be the result of the volcanic activity reported there. A much lower average of Hg content was recorded in Lublin and the Upper Silesian Coal Basins (LCB and USCB), although it was higher in the former. A higher mercury concentration in the LCB is probably related to the zone of supposed deep disturbances, named the Karpinsky lineament. Most published works present the data on the mercury content in the bulk of mined coal. The preliminary assessment of mercury content in coal seams indicates that it varies considerably between and within them. It is bound to the presence of arsenic-bearing iron sulfides. Concentration of mercury in small zones of limited extent suggests it was introduced by migrating fluids. The knowledge of mercury content distribution in coal seams would improve the prediction of its content in the mined coal and allow better management of produced coal quality with the aim of reducing mercury emission to the atmosphere as a result of coal combustion.

scholarly journals Mercury in Bituminous Coal Used in Polish Power Plants

2016 ◽  
Vol 61 (3) ◽  
pp. 473-488 ◽  
Author(s):  
Piotr Burmistrz ◽  
Krzysztof Kogut
Keyword(s):  
Coal Combustion ◽  
Emission Factor ◽  
Power Plants ◽  
Calorific Value ◽  
Mercury Content ◽  
Air Pollution Control ◽  
The European Union ◽  
Mercury Emission ◽  
Control Devices ◽  
Air Pollution Control Devices

Abstract Poland is a country with the highest anthropogenic mercury emission in the European Union. According to the National Centre for Emissions Management (NCEM) estimation yearly emission exceeds 10 Mg. Within that approximately 56% is a result of energetic coal combustion. In 121 studied coal samples from 30 coal mines an average mercury content was 112.9 ppb with variation between 30 and 321 ppb. These coals have relatively large contents of chlorine and bromine. Such chemical composition is benefitial to formation of oxidized mercury Hg2+, which is easier to remove in Air Pollution Control Devices. The Hgr/Qir (mercury content to net calorific value in working state) ratio varied between 1.187 and 13.758 g Hg · TJ−1, and arithmetic mean was 4.713 g Hg · TJ−1. Obtained results are close to the most recent NCEM mercury emission factor of 1.498 g Hg · TJ−1. Value obtained by us is more reliable that emission factor from 2011 (6.4 g Hg · TJ−1), which caused overestimation of mercury emission from energetic coal combustion.

scholarly journals Variability of Mercury Content in Coal Matter From Coal Seams of The Upper Silesia Coal Basin

2017 ◽  
Vol 62 (4) ◽  
pp. 843-856 ◽  
Author(s):  
Krzysztof Wierzchowski ◽  
Jarosław Chećko ◽  
Ireneusz Pyka
Keyword(s):  
Mercury Content ◽  
Quality Parameters ◽  
Coal Seams ◽  
Coal Basin ◽  
Multi Stage ◽  
Upper Silesian Coal Basin ◽  
Lithostratigraphic Units ◽  
Method Of Assessment ◽  
Deposition Depth ◽  
Precise Assessment

Abstract The process of identifying and documenting the quality parameters of coal, as well as the conditions of coal deposition in the seam, is multi-stage and extremely expensive. The taking and analyzing of seam samples is the method of assessment of the quality and quantity parameters of coals in deep mines. Depending on the method of sampling, it offers quite precise assessment of the quality parameters of potential commercial coals. The main kind of seam samples under consideration are so-called “documentary seam samples”, which exclude dirt bands and other seam contaminants. Mercury content in coal matter from the currently accessible and exploited coal seams of the Upper Silesian Coal Basin (USCB) was assessed. It was noted that the mercury content in coal seams decreases with the age of the seam and, to a lesser extent, seam deposition depth. Maps of the variation of mercury content in selected lithostratigraphic units (layers) of the Upper Silesian Coal Basin have been created.

scholarly journals Sulphides in Hard Coal Seams from the Orzesze Beds s.s. of Mudstone Series (Westphalian B) in the Eastern Part of the Upper Silesian Coal Basin

2016 ◽  
Vol 32 (3) ◽  
pp. 23-38
Author(s):  
Barbara Bielowicz ◽  
Jacek Misiak
Keyword(s):  
Hard Coal ◽  
Titanium Oxides ◽  
Iron Sulfides ◽  
Coal Seams ◽  
Coal Basin ◽  
Framboidal Pyrite ◽  
Coal Deposits ◽  
Upper Silesian Coal Basin ◽  
Iron Sulphides ◽  
Sulfur In Coal

Abstract Due to dynamic climatic changes resulting, among others, from the use of coal, the content of harmful substances in coal is of particular importance. Dangerous air pollution resulting from the burning of coal (e.g. As, Se, Hg, Pb, Sb) is often associated with sulfide minerals in coal. The study focused on the sulphides occurring in Polish hard coal deposits. Sulfides are one of the forms of occurrence of sulfur in coal. In this paper, an emphasis has been placed on on the characteristics of forms of occurrence of sulphides on both macroscopic and microscopic scale and on the chemical analysis in the micro area. The study has been conducted for the No. 301–308 seams from the eastern part of the Upper Silesian Coal Basin, stratigraphically belonging to the highest part of the Orzesze Beds s.s. (Westphalian B). The coal samples have been collected from the coal seams in the underground excavations of the following coal mines: Jan Kanty, Sobieski Jaworzno I, Wesoła and Ziemowit hard coal mine. Iron sulfides (pyrite, marcasite) in coal seams of the Orzesze Beds s.s. form various forms of macroscopically visible aggregates. These include massive, vein, pocket-like (impregnation) or dispersed forms. On the basis of microscopic observations, the following forms of occurence of iron sulphides in the tested coal have been determined: skeletal and massive vein forms, massive pocket-like (impregnation) forms, framboidal pyrite and euhedral crystals. The most common form of sulfides in the studied coal seams are vein forms cutting across bedding, usually creating complex dendritic and skeletal forms. Iron sulfides often occur in pocket-like (impregnation) forms, not directly linked with vein forms and fusinite. The WDS analysis in the micro area has revealed the chemical composition of sulfides in eight coal samples. As follows from the analysis, the tested coal seams are dominated by FeS2 iron sulfides. It has been shown that the iron sulfides contained small admixtures of Pb, Hg, Zn, Cu, Ag, Co Sb and Ni. The admixtures of As and Cd have been observed only in individual minerals. Lead, reaching up to 1.06%, has the highest concentration out of all admixtures in pyrite and marcasite. Small amounts of galena, titanium oxides (rutile), monazite and barite have also been found in the tested coal samples. Locally, vein forms, pyrite and dolomite were interlaying each other; the same applies to pyrite and apatite. In addition, dolomite fills part of the cells in fusinite.

Volcanoclastic minerals of some Czechoslovakian tonsteins and their alteration

Clay Minerals ◽  
1992 ◽  
Vol 27 (3) ◽  
pp. 269-282 ◽  
Author(s):  
Z. Weiss ◽  
A. Baronnet ◽  
M. Chmielova
Keyword(s):  
Coal Seams ◽  
Coal Basin ◽  
Upper Carboniferous ◽  
Upper Silesian Coal Basin ◽  
Mineral Assemblages ◽  
Clayey Rocks ◽  
Quartz Grains

AbstractIn the Czechoslovak part of the Upper Silesian Coal Basin (Ostrava-Karvina Coal Basin), only part of the Upper Carboniferous (Namurian A, B, C and Westphalian A) is well developed, and tonsteins, which are clayey rocks or claystones, occur as thin, clayey interlayers in the coal seams. Two types of primary volcanic mineral assemblages were identified in four tonstein samples from different coal seams; the first type is characterized by the presence of biotite and sanidine, and the second by the presence of biotite, bytownite and Ca-amphibole. All tonsteins studied contained kaolinite minerals, volcanic quartz grains, crystals of zircon and apatite. Separated biotite flakes with an admixture of kaolinite layers were identified as 1M polytype. The flakes without kaolinite minerals were identified as epitactic overgrowth of 1M and complex polytypes, and twinned crystals of 2M1 polytype. Kaolinization of biotite flakes was observed in all tonstein samples studied. Kaolinite single layers (7 Å) as well as two-layer polytype of kaolinite minerals (14 Å) sandwiched between biotite layers (10 Å) were identified by HRTEM imaging.

Char characteristics and particulate matter formation during Chinese bituminous coal combustion

2007 ◽  
Vol 31 (2) ◽  
pp. 1947-1954 ◽  
Author(s):  
Yun Yu ◽  
Minghou Xu ◽  
Hong Yao ◽  
Dunxi Yu ◽  
Yu Qiao ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Coal Combustion ◽  
Bituminous Coal ◽  
Particulate Matter Formation
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