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Journal articles on the topic 'Coal-dust combustion'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Ejesieme, Vitus O., Nicole Vorster, Juan Riaza, Gary Dugmore, and Ben Zeelie. "Reclamation of ultra-fine coal with scenedesmus microalgae and comprehensive combustion property of the Coalgae® composite." Journal of Energy in Southern Africa 31, no. 1 (2020): 14–27. http://dx.doi.org/10.17159/2413-3051/2020/v31i1a6430.

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Combustion of South African discard ultra-fine coal (i.e. coal dust), charcoal, microalgae biomass, and composites of the three under air were studied. The study involves to find out the effect of Scenedesmus microalgae biomass on the comprehensive combustion characteristics of the ultra-fines. Coal dust is considered as waste material, but it could be modified and combusted for energy. The composites were designed with Design Expert, and unlike blending with the dry microalgae biomass, fresh slurry was blended with the ultra-fine coal and charcoal. Non-isothermal combustion was carried out at

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2

Shvydkii, V. S., S. P. Kudelin, I. A. Gurin, and V. Yu Noskov. "Development of information modeling system of coal-dust fuel injection into tuyeres of blast furnace." Izvestiya. Ferrous Metallurgy 62, no. 12 (2020): 979–86. http://dx.doi.org/10.17073/0368-0797-2019-12-979-986.

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The article considers a mathematical model of combustion zone of blast furnace working with the use of injection of coal-dust fuel. In this model, two subsystems were identified: 1) subsystem of heating the particles of coal dust and volatiles release in the combustion zone; 2) subsystem of heat exchange and combustion processes in the tuyere. A two-dimensional velocity field of gas in the combustion zone was investigated. The combustion processes are considered as a set of simultaneously developing phenomena of coke burning in a layer, single pieces of coke and particles of coal dust. The mod

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3

Gao, Yan Hong, Zhong Yu Liang, Guang Jun Zhu, Neng Yun Deng, and Sheng Qin Zhang. "Experimental Study on Properties of Coal and Coke Dry Quenching Dust Blend." Advanced Materials Research 997 (August 2014): 550–53. http://dx.doi.org/10.4028/www.scientific.net/amr.997.550.

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In the present research work, adding a certain amount of coke dry quenching(CDQ) dust to pulverized coal used in blast furnace is proposed for efficient utilization of resources and reducing smelting cost. The properties of coal blends and coal/dust blends were investigated by using long tube tester and the device of thermogravimetry (TG). Important results were obtained by experimental researches about explosibility and combustion performance. According to optimum blending ratio of coal B in coal blend (around 50%), burnout of coal/dust blends decreases after adding CDQ dust in the range 5% t

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4

Sal'nikov, A. V., B. S. Repič, P. T. Radulovič, and L. L. Jovanovič. "Combustion kinetics of coal dust." Journal of Engineering Physics and Thermophysics 68, no. 2 (1995): 225–29. http://dx.doi.org/10.1007/bf00862866.

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5

Portola, Vyacheslav, Hi Un Lee, Denis Botvenko, Vladimir Ludzish, and Arhip Pavlov. "Increasing Spontaneous Combustion Risk While Reducing the Coal Particle Size." E3S Web of Conferences 105 (2019): 01029. http://dx.doi.org/10.1051/e3sconf/201910501029.

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Extraction, storage and transportation of coal are complicated by the danger of spontaneous combustion centers due to toxic gases emission. At various technological processes, the formation of clusters consisting of coal particles of various sizes is possible. In the course of the research, the influence of the size of coal particles on the danger of spontaneous combustion of oxidizing material clusters was estimated. The studies of coal chemical activity have shown that for most seams of Kuzbass mines, the amount of absorbed oxygen increases significantly with decreasing particle size. Coal d

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6

Portola, V. A., A. A. Bobrovnikova, S. A. Sin, and V. G. Igishev. "Special Features of the Release of Indicator Fire Gases at the Nitrogen Supply to the Foci of Coal Spontaneous Combustion." Occupational Safety in Industry, no. 4 (April 2022): 47–52. http://dx.doi.org/10.24000/0409-2961-2022-4-47-52.

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The most common method for monitoring the processes of spontaneous combustion of coal in the mines is the analysis of the composition of the mine atmosphere to detect gases released from coal when the temperature rises. Carbon monoxide and hydrogen are usually used as the main indicators. In recent years, nitrogen is widely used to prevent and extinguish the underground fires. It reduces the oxygen concentration in the fire area and can affect the indicator gases release. To study this effect, the samples of coal with a fraction of 1–3 mm, and the samples of coal dust with a particle size of 0

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7

Won, Soo Ran, In-Keun Shim, Jeonghoon Kim, et al. "PM2.5 and Trace Elements in Underground Shopping Districts in the Seoul Metropolitan Area, Korea." International Journal of Environmental Research and Public Health 18, no. 1 (2021): 297. http://dx.doi.org/10.3390/ijerph18010297.

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We measured PM2.5 in 41 underground shopping districts (USDs) in the Seoul metropolitan area from June to November 2017, and associated 18 trace elements to determine the sources and assess the respiratory risks. The PM2.5 concentrations were 18.0 ± 8.0 μg/m3 inside USDs, which were lower than 25.2 ± 10.6 μg/m3 outside. We identified five sources such as indoor miscellanea, soil dust, vehicle exhaust/cooking, coal combustion, and road/subway dust, using factor analysis. Almost 67% of the total trace element concentration resulted from soil dust. Soil dust contribution increased with the number

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8

Wang, Junfeng, Yansong Zhang, Huifeng Su, Jinshe Chen, Bo Liu, and Yuyuan Zhang. "Explosion Characteristics and Flame Propagation Behavior of Mixed Dust Cloud of Coal Dust and Oil Shale Dust." Energies 12, no. 20 (2019): 3807. http://dx.doi.org/10.3390/en12203807.

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Coal and oil shale are often mined and utilized together, and mixed dust is easily formed in these processes. In order to ensure safe production in these processes, the explosion characteristics of mixed dust were studied. Using a Godbert-Greenwold (G-G) Furnace experimental device, Hartmann tube experimental device, and 20 L explosion vessel, the oil shale and coal mixed dust ignition sensitivity experiment, flame propagation experiment, and explosion characteristics experiment were carried out. The minimum ignition temperature (MIT), minimum ignition energy (MIE), maximum explosion pressure

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9

Cherdantsev, S. V., P. A. Shlapakov, S. I. Goloskokov, and D. N. Batrakov. "Construction and implementation of a thermal model of aeromethane mixture combustion in the mine atmosphere, considering its kinetics." Occupational Safety in Industry, no. 9 (September 2021): 7–14. http://dx.doi.org/10.24000/0409-2961-2021-9-7-14.

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At the coal deposits exploitation by using underground methods, as a rule, negative factors that reduce coal production and miners' safety exhibit. These factors include, first of all, methane emitted from the broken coal and the coal dust as an inevitable result of work of headers and cleansing combines. Interacting with the atmosphere of mines, methane and coal dust generate dust- and dust-gas-aerial mixtures where thermophysical and chemical processes take place. First of all, these processes are combustion and detonation that until recently were included into the category of highly hazardo

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10

Zanganeh, Jafar, Mohammed J. Ajrash Al-Zuraiji, and Behdad Moghtaderi. "Investigation of the Minimum Ignition Energy Required for Combustion of Coal Dust Blended with Fugitive Methane." Fire 7, no. 11 (2024): 381. http://dx.doi.org/10.3390/fire7110381.

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Ventilation Air Methane (VAM) significantly contributes to global warming. Capturing and mitigating these emissions can help combat climate change. One effective method is the thermal decomposition of methane, but it requires careful control to prevent explosions from the high temperatures involved. This research investigates the influence of methane concentration and coal dust particle properties on the minimum ignition energy (MIE) required for fugitive methane thermal decomposition and flame propagation properties. This knowledge is crucial for the mining industry to effectively prevent and

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11

HOSHIZAWA, Kinji, Kazuo KOYATA, and Tetsuo ONO. "Coal dust dispersion and spontaneous combustion at coal stockpiles." Journal of the Fuel Society of Japan 64, no. 4 (1985): 224–40. http://dx.doi.org/10.3775/jie.64.224.

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12

Toropov, Evgeniy, Konstantin Osintsev, and Sergei Aliukov. "New Theoretical and Methodological Approaches to the Study of Heat Transfer in Coal Dust Combustion." Energies 12, no. 1 (2019): 136. http://dx.doi.org/10.3390/en12010136.

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The existing theories of heat transfer in combustion chambers of boiler units fail to take into account a number of important factors that affect the reliability of results, and the methodological approaches to optimizing combustion processes can be revised in view of the spatial and temporal parameters of flame. Hence, the research aimed to improve the fundamental theoretical and methodological principles of studying heat transfer in coal dust combustion in the combustion chambers of industrial steam generators. The authors proposed to extend the theory of heat transfer with the mathematical

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13

Nyashina, Galina. "Environmental advantages of composite fuels based on industrial wastes and different ranks of coal." MATEC Web of Conferences 209 (2018): 00013. http://dx.doi.org/10.1051/matecconf/201820900013.

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Thermal power plants and boiler units generate most of the anthropogenic emissions around the world. A promising solution to many problems that heat and power industry is facing today would be switching from conventional coal dust combustion to composite liquid fuels (CLF). These are also known as coal-water slurries containing petrochemicals (CWSP). Here, we perform an experimental study of the most hazardous anthropogenic emissions (sulfur and nitrogen oxides) from the combustion of high-potential CWSP. We identify the main benefits and potential drawbacks of using CWSP in heat and power ind

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14

Каlіnchak, V. V., A. S. Chernenko, V. S. Voloshin, Yu A. Zinchenko, and R. D. Kuzemko. "The influence of ash-content pulverized coal particles on their burning characteristics in tuyere hearth." Physics of Aerodisperse Systems, no. 53 (June 15, 2021): 46–60. http://dx.doi.org/10.18524/0367-1631.2016.53.159314.

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Effect of ash content in coal dust on the burning characteristics in tuyere zone of blast furnace is studied. The ash is considered as an individual fraction in addition to two fractions of coal dust. It is shown, that the variation of pulverized coal fractional composition allows increase of carbon monoxide yield and fuel particles burnout. The presence of ash results in oxygen zone extension and increase of coke residue burnout. At the same time the total coal dust burnout is lower than that of low-ash coal. Fine pulverized coal combustion is characterized by increased production of carbon m

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15

Yan, Zheng Xin, Tao Zhang, Dong Zhi Yan, et al. "A Comparison Study of Hybrid Flame of Methane/Coal Dust Mixture in Vented Explosions." Advanced Materials Research 864-867 (December 2013): 801–8. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.801.

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The interaction of the induced flame front with coal dust cloud with different equivalence ratio was experimentally investigated by the vented flow with Kv=5.4 and Kv=10.9, and compared to the vented flow pressure characteristics of methane with and without coal dust. The increasing second peak structure of hybrid mixture pressure suggested that a dust secondary explosion does exist in external space of vent vessel. The pressure results with the increasing equivalence ratio of hybrid mixture also exhibit that there is not rich limit for coal dust in hybrid explosions. However, the maximum pres

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16

Yesmakhanova, Laura, Waldemar Wójcik, Seitzhan Orynbayev, Indira Shedreyeva, and Martebe Zhankuanyshev. "Development of algorithms for diagnostics as well as control of biomass gasification and combustion processes." International Journal of Innovative Research and Scientific Studies 8, no. 2 (2025): 3236–53. https://doi.org/10.53894/ijirss.v8i2.5992.

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This study examines the development of algorithms for diagnosis as well as the control of biomass gasification and combustion processes. The scientific work is grounded in theory and research findings from both laboratory stations and industrial facilities that use biomass as fuel, typically co-fired with coal after pre-crushing. The practical significance of the work is that biomass was converted into gas or solid form to provide additional fuel during combustion at laboratory stations. The work specifically focuses on diagnosing complex processes, including biomass gasification and its co-co

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17

GUNCHIN, GERELMAA, LODOYSAMBA SEREETER, SHAGJJAMBA DAGVA, et al. "AIR PARTICULATE MATTER POLLUTION IN ULAANBAATAR CITY, MONGOLIA." International Journal of PIXE 22, no. 01n02 (2012): 165–71. http://dx.doi.org/10.1142/s0129083512400062.

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Due to increased energy demands from its rapidly growing economy and population, ambient air in Ulaanbaatar, the capital city of Mongolia contains some of the highest reported air particulate matter (APM) concentrations in the world. The purpose of this study is to identify major APM sources. Source apportionment is an elegant and effective way to establish baseline data for mitigation strategies that focus on reducing APM pollution. The Nuclear Research Centre at the National University of Mongolia has been conducting APM pollution studies in Ulaanbaatar since 2004. Results presented here are

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18

Sadkin, Ivan, Mariia Mukhina, Evgeniy Shadrin, and Evgeny Kopyev. "Combined combustion of pulverized coal and liquid fuel in a low-power vortex burner." Thermal Science, no. 00 (2023): 97. http://dx.doi.org/10.2298/tsci230123097s.

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In this work we study the process of co-combustion of pulverized coal fuel (coal grinded up to 100 microns) and liquid (diesel) fuel in a new low-power burner, where coal-air mixture is fed tangentially together with secondary air, and liquid fuel is atomized by a high-velocity steam jet. Temperature profiles and composition of intermediate combustion products along the vertical axis of the burner have been studied. The heat release (power) and the gas composition of final combustion products have been measured. This allowed us to demonstrate the principal possibility of combined combustion of

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19

Muthukumar, K., K. Amirtham, and A. Sundaramahalingam. "Study on spontaneous combustion and environmental pollution in a coal storage yard." IOP Conference Series: Earth and Environmental Science 1125, no. 1 (2022): 012001. http://dx.doi.org/10.1088/1755-1315/1125/1/012001.

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Abstract In coal fired power plants, Bituminous coal grade C is received through wagons from coal mines, unloaded, and separated as sized coal and coal dust. Coal is stored in stockpiles of around 22000 square metres that have been specified for coal storage. The size of each stockpile is 15’ in length, 10’ in width, and 10’ in height and the temperature in the locality is around 38 °C, with summer temperatures reaching 42 °C. Spontaneous combustion occurred more than 90 times in a six month time. More than 75% of the area always has coal-stock since the industries are far away from the coal m

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20

Sechin, Alexander I., Yuri F. Patrakov, Irina L. Mezentseva, and Andrey A. Sechin. "Development of an experimental method for predicting the ignition stage of an airborne suspension based on visualization of combustion video files." Bulletin of the Tomsk Polytechnic University Geo Assets Engineering 336, no. 2 (2025): 241–50. https://doi.org/10.18799/24131830/2025/2/4968.

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Relevance. The problems arising in developing fuel composites and consisting in determining the optimal ratio of combustible components are solved in the study of their physicochemical and operational properties. Particular attention should be paid to ignition and combustion of the air suspension of fuel compositions. Aim. The implementation of these problems is seen in the development of an experimental technique for predicting some indicators of coals and coal waste based on the methodology of analyzing video files air suspension of ignition in the form of a graphical visualization of combus

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21

Wasielewski, Ryszard, Krzysztof Głód, and Jolanta Telenga-Kopyczyńska. "Energy and emission aspects of co-combustion solid recovered fuel with coal in a stoker boiler." E3S Web of Conferences 28 (2018): 01037. http://dx.doi.org/10.1051/e3sconf/20182801037.

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The results of industrial research on co-combustion of solid recovered fuel (SRF) with hard coal in a stoker boiler type WR-25 has been presented. The share of SRF in the fuel mixture was 10%. During the co-combustion of SRF, no technological disturbances or significant reduction in energy efficiency of the boiler were noted. Obtained SO2, NOx and CO emissions were comparable with coal combustion but dust emissions increased. During combustion of the coal mixture with a 10% share of SRF in the test boiler WR-25, the emission standards established for the combustion of the dedicated fuel were m

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22

Cherdantsev, S. V., P. A. Shlapakov, K. S. Lebedev, A. Yu Erastov, and S. A. Khaymin. "Self-ignition of dust and gas-air mixtures in the atmosphere of mine workings." Mining Industry Journal (Gornay Promishlennost), no. 2/2024 (May 15, 2024): 121–26. http://dx.doi.org/10.30686/1609-9192-2024-2-121-126.

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The underground mining of coal deposits is usually accompanied by manifestation of a number of negative factors, one of which is the presence of dust and gas-air mixtures consisting of fine coal dust, methane released from the broken coal and the air of the mine atmosphere. Despite modern methods and means of dust suppression and dust collection, it has not yet been possible to achieve complete neutralization of dust and gas-air mixtures in the atmosphere of mine workings. The negative effects of dust and gas-air mixtures can manifest themselves in different ways. On the one hand, deposits of

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23

Ji, Ai Min, Shu Mei Yan, Ying Gao, Shu Ran Wan, and Hong Ya Liu. "Source Apportionment of PM₁₀ in the Open Air of Urban Area in Tangshan." Applied Mechanics and Materials 209-211 (October 2012): 1545–48. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1545.

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All sources of the particulate matter less than 10 micrometers (PM10) were collected in Tangshan. Inorganic elements, water-solvent ions and carbon species of PM10 samples were investigated to identify the sources of PM10. Contribution and sharing rate of suspended dust, soil dust, coal smoke dust, construction dust, vehicles exhaust, SO42-, NO3- and sea dust to PM10 was determined based on the chemical mass balance (CMB) receptor model. The results showed that suspended dust was the most important PM10 source with a contribution of 42%; flying ash from coal combustion, particle dust from soil

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Wawer, Małgorzata. "Identification of Technogenic Magnetic Particles and Forms of Occurrence of Potentially Toxic Elements Present in Fly Ashes and Soil." Minerals 10, no. 12 (2020): 1066. http://dx.doi.org/10.3390/min10121066.

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Solid fossil fuel power plants are the main source of energy in Poland. In 2018, the most important energy carrier was hard coal with a share of 57.9%, followed by lignite with a share of 18.1%. In addition to CO2, NOx and SOx, the combustion of fossil fuels produces dusts containing, among others, potentially toxic elements (PTEs), e.g., Pb, Zn, Cu, Cr, Cd. Although the currently operating power plants have efficient filter systems, the total dust emission in Poland in 2017 amounted to 341,000 t, of which approximately 36,000 t was from the power plants. PTEs present in the power plant dust a

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25

Cheng, Xue Zhen, Ji Ming Li, Qi Li, Mao Yong Cao, and Laxmisha Rai. "A Novel Coal Water Content Measurement Method on Conveyor Belt." Advanced Materials Research 503-504 (April 2012): 1292–97. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1292.

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The coal dust storms create great harm to the environment and human health. The main source of coal dust is the low coal moisture on various types of coal conveying belt. The intensity of coal dust is heavy, especially in the coal-fired power plant, coal transportation coal conveyor belt and in areas, where various reprint point was heavy. In this paper, a measurement method on moisture content of coal conveying belt was proposed. The local group based on the probability can eliminate the factors affecting measuring accuracy such as the big piece of coal, the thickness of coal seam, and coal r

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Mitishova, N. A. "DEVELOPMENT OF TECHNOLOGICAL RECOMMENDATIONS FOR ENSURING FIRE AND EXPLOSION SAFETY DURING UNDERGROUND DEVELOPMENT OF PYRITE ORE DEPOSITS." News of the Tula state university. Sciences of Earth 4, no. 1 (2021): 165–77. http://dx.doi.org/10.46689/2218-5194-2021-4-1-165-177.

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The urgency of the problem of reducing the risks associated with spontaneous com-bustion of coal ores and sulfide dust explosions has now increased not only in Russia, but al-so abroad, as there have been significant changes in the mineral resource base of the world's leading metal producers. The oxidation of sulfide ores and rocks with air oxygen is an irre-versible and characteristic exothermic reaction that should be taken into account during the extraction and processing of sulfide-containing minerals to prevent spontaneous combustion of ores and explosions of sulfide dust. The article pre

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27

Ihor, Beztsennyi, Bondzyk Dmytro, Dunayevska Nataliya, and Nekhamin Mark. "RESEARCH OF CO-COMBUSTION OF SOLID BIOFUEL WITH LEAN AND BITUMINOUS COAL." Technology audit and production reserves 6, no. 1 (50) (2019): 4–10. https://doi.org/10.15587/2312-8372.2019.187165.

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<em>The object of research is the processes of thermal conversion of steam coal and biomass, with the aim of creating highly efficient environmentally friendly technologies for its joint combustion into fuel boiler units.</em> <em>One of the important problems that impede the introduction of co-combustion of biomass with coal is the insufficient knowledge of the interaction of two very different solid fuels. The characteristics of grinding, particle aerodynamics, kinetics of all stages of combustion during the joint combustion of two solid fuels remain unexplored. Co-combustion of biomass with

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Dorokhov, Vadim, Geniy Kuznetsov, and Galina Nyashina. "Combustion of Coal and Coal Slime in Steam-Air Environment and in Slurry Form." Energies 15, no. 24 (2022): 9591. http://dx.doi.org/10.3390/en15249591.

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One of the ways to minimize anthropogenic emissions from coal combustion is to replace conventional schemes used for the introduction of coal dust into the furnaces of power plants through the injection of water-containing fuels. In this research, the three most promising schemes for fuel combustion were implemented: (i) the simultaneous introduction of coal particles and water droplets into the combustion chamber; (ii) steam injection into the fuel particle combustion zone; and (iii) the introduction of coal–water slurries into the furnace. Three methods of supplying water to the combustion z

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Nie, Li Jun, Yang Liu, and Mei Huang. "The Design of Electrostatic Precipitation for the Home Heating Boiler with Fine Coal Water Slurry Combustion." Advanced Materials Research 726-731 (August 2013): 1972–76. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.1972.

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The coal-water slurry produced with Datong coal was tested in a home boiler for heating. The experiment results of dust collection with the new tube type electrostatic precipitation of fly ash of coal water slurry combustion fit the emission standard of air pollutants for boilers (GB 13271-2001). The parameters for the electrostatic precipitation are as follows: the drift velocity of fly ash of coal water slurry combustion, 10.39 cm/s, the number of the tube, 64, the size of the tube, 25.6cm×25.6cm×20cm, the power, 0.24kW.

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Rybak, Wiesław, Wojciech Moroń, and Janusz Wach. "Ignition Studies on High-Vitrinite and High-Inertinite Coals Using TGA/DSC, DTIF, EFR, and 20 L Dust Explosive Chamber." Energies 14, no. 12 (2021): 3601. http://dx.doi.org/10.3390/en14123601.

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The aim of this work was to study the ignition behaviour of eight coals of different coal ranks, petrographic compositions, and places of origin. The research allows us to gain deeper insight into the ignition mechanism and the relationship between certain properties of coals and their behaviour during ignition. The methodology utilised standard fuel ASTM data, petrographic analysis, pyrolysis and oxidation reactivity, and ignition characteristics generated through lab-scale tests using various ignition measurement methods. The results show that, in the dust explosion, a homogeneous ignition o

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Casas Herrera, Elkin, Astrid Blandón Montes, and Jorge Martin Molina-Escobar. "Evaluation of parameters to determine the degree of coal dust explosibility." Boletín de Ciencias de la Tierra, no. 36 (July 1, 2014): 42–54. http://dx.doi.org/10.15446/rbct.n36.46203.

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Coal dust is highly explosive and caused dozens of victims in Colombia. In this research the most important and direct influence on coal dust, especially those that cause combustion and explosion inside the mine factors were analyzed; is important to discuss the characteristics of each coal mined and processed, for actions that do not compromise the integrity of the staff or facilities. Four (4) channel samples of coal exploitation faces with High Volatile Bituminous C from Cerrejón Formation were collected and analyzed: Proximal (moisture, ash, volatile matter, fixed carbon, total sulfur and

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Sijercic, Miroslav, Srdjan Belosevic, and Predrag Stefanovic. "Modeling of pulverized coal combustion stabilization by means of plasma torches." Thermal Science 9, no. 2 (2005): 57–72. http://dx.doi.org/10.2298/tsci0502057s.

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Application of plasma-system for pulverized coal ignition and combustion stabilization in utility boiler furnaces promises to achieve certain savings compared to the use of heavy oil burners. Plasma torches are built in air-coal dust mixture ducts between coal mills and burners. Characteristics of processes in the ducts with plasma-system for pulverized coal combustion stabilization are analyzed in the paper, with respect to the modeling and numerical simulation of mass, momentum and heat transfer in two-phase turbulent gas-particle flow. The simulations have been performed for three different

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33

Moiseeva, K. M., A. Yu Krainov, and E. I. Rozhkova. "COMBUSTION OF A GAS SUSPENSION OF COAL DUST IN A SWIRLING FLOW." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 71 (2021): 139–47. http://dx.doi.org/10.17223/19988621/71/11.

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Swirling combustion is currently one of the most important engineering problems in physics of combustion. There is a hypothesis on the increase in the combustion efficiency of reacting gas mixtures in combustion chambers with swirling flows, as well as on the increase in the efficiency of fuel combustion devices. In this paper, it is proposed to simulate a swirling flow by taking into account the angular component of the flow velocity. The aim of the study is to determine the effect of the angular component of the flow velocity on the characteristics of the flow and combustion of an air suspen

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Nurhasan, Agung Kurniawan, Hendro Agus Widodo, R. Y. Adhitya, and Rachmad Andri Atmoko. "Applied K-Nearest Neighbors (KKN) on Dust Suppression Prototype." Indonesian Journal of Engineering Research 1, no. 1 (2020): 14–19. http://dx.doi.org/10.11594/ijer.01.01.03.

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Steam power plants that use coal as fuel have serious problems during operation. Before heading to the combustion process, coal is stored in an open field area. However, this results in fine particles of coal dust being exposed to wind and polluting the surrounding environment. The purpose of this study is to minimize the impact of pollution from coal dust by using the dust suppression tool. The tools that have been run manually or conventionally can be operated automatically to facilitate the operator in controlling dust suppression without the need to go to the field. This research proposes

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35

Rajan, S., and J. K. Raghavan. "Coal Mineral Matter Transformation During Combustion and Its Effects on Gas Turbine Blade Deposition and Erosion." Journal of Engineering for Gas Turbines and Power 115, no. 3 (1993): 634–40. http://dx.doi.org/10.1115/1.2906753.

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The reaction pathways along which mineral matter is transformed during pulverized coal combustion and the corresponding characteristics of the ash formed are especially important from the standpoint of coal-fired gas turbine operation. Using a novel FT-IR technique and EDX analysis, these mineral matter transformations are investigated when coal is burned in a pulverized coal-dust burner. The mineral transformations of quartz, gypsum, calcite, dolomite, pyrite, and those of the aluminosilicate minerals, kaolinite and montmorillonite, have been evaluated. Discussion of the results focuses on th

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Kijo-Kleczkowska, Agnieszka. "Analysis of coal suspensions evolution during combustion process." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 5 (2019): 2551–61. http://dx.doi.org/10.1108/hff-03-2019-0200.

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Purpose The paper aims to undertake coal–water suspension combustion, in air and in fluidised bed conditions. Fluidised bed conditions are the best to efficiently and ecologically use fuel. Combustion technologies using coal–water fuels create a number of new possibilities for organising combustion processes so that they fulfil contemporary requirements. The aim of the process was to show how the specificity of combustion of coal–water suspensions in the fluidised bed changes the kinetics of the process, compared to combustion in the air stream. Changes of the surface and the centre temperatur

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Сазонов, М. С., та С. И. Голоскоков. "ИССЛЕДОВАНИЕ ВЗРЫВЧАТОСТИ УГОЛЬНОЙ ПЫЛИ РАЗЛИЧНОГО ДИСПЕРСНОГО СОСТАВА". Вестник Научного центра ВостНИИ по промышленной и экологической безопасности, № 1(9) (1 квітня 2019): 5–13. http://dx.doi.org/10.25558/vostnii.2019.89.87.001.

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Представлены исследования взрывчатости угольной пыли, проводимые в НЦ ВостНИИ. Целью работы является повышение уровня пылевзрывобезопасности технологических процессов. Испытания проводились в 4,25-литровой испытательной камере. Проведен анализ измеряемых показателей: нижнего концентрационного предела распространения пламени, максимального давления взрыва, максимальной скорости нарастания давления взрыва, индекса пожаровзрывоопасности, времени индукции пыли, времени горения пыли, добавки инертной пыли, модальной величины распределения частиц угля. Studies of the coal dust explosiveness conducte

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Zivkovic, Marija, Milena Jovasevic-Stojanovic, Anka Cvetkovic, Rastko Jovanovic, and Dragan Manojlovic. "Characterisation of fine particulate matter level, content and sources of a kindergarden microenvironment in Belgrade city center." Thermal Science, no. 00 (2022): 220. http://dx.doi.org/10.2298/tsci220831220z.

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In the present work, we investigated polycyclic aromatic hydrocarbons (PAHs), metals and ions of indoor and outdoor PM2.5 from 80 samples collected in the microenvironment of a kindergarten located in Belgrade city center during weekdays, from March to May 2010. The daily concentrations of PM2.5 were much higher than WHO guidance daily value. Results show similar factor profiles identified by principal component analysis (PCA) and positive matrix factorization (PMF). For indoor and outdoor environment, six principal components (PCs) were identified by PCA, and six and seven factors were identi

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Klepikov, Dmitriy, Tereza Kudelova, Kristina Paushkina, and Pavel Strizhak. "Additives to Coal-Based Fuel Pellets for the Intensification of Combustion and Reduction in Anthropogenic Gas Emissions." Applied Sciences 10, no. 19 (2020): 6689. http://dx.doi.org/10.3390/app10196689.

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Cylinder-shaped fuel pellets that were 3 mm in diameter and 3 mm in height, with a mass of 20 mg, were produced by compressing dry coal processing waste under the pressure of 5 MPa. The first group of pellets from coal dust with a particle size less than 140 µm did not contain any additives. The pellets of the second group of fuel compositions contained an oil-impregnated porous polymer material particle with a size of 0.5 mm in the central part of the experimental sample. The particle was surrounded by coal dust from all sides. The ratio of components was 90:10% for coal dust: polymer particl

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Sajin, Tudor, Ştefania Roxana Buzdugă, Dumitru Olaru, and Florin Anitei. "Influence of Humidity of Water-Oil and Water-Coal Dust Fuels on their Energetic, Economic and Ecological Combustion Benefits." Advanced Materials Research 875-877 (February 2014): 1912–16. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.1912.

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Du, Huihui, Tantan Tan, Jiaying Pan, Meng Xu, Aidong Liu, and Yanpeng Li. "Real-Time Source Dynamics of PM2.5 During Winter Haze Episodes Resolved by SPAMS: A Case Study in Yinchuan, Northwest China." Sustainability 17, no. 14 (2025): 6627. https://doi.org/10.3390/su17146627.

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The occurrence of haze pollution significantly deteriorates air quality and threatens human health, yet persistent knowledge gaps in real-time source apportionment of fine particulate matter (PM2.5) hinder sustained improvements in atmospheric pollution conditions. Thus, this study employed single-particle aerosol mass spectrometry (SPAMS) to investigate PM2.5 sources and dynamics during winter haze episodes in Yinchuan, Northwest China. Results showed that the average PM2.5 concentration was 57 μg·m−3, peaking at 218 μg·m−3. PM2.5 was dominated by organic carbon (OC, 17.3%), mixed carbonaceou

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Lu, A., D. Zhao, J. Li, C. Wang, and S. Qin. "Application of vermiculite and limestone to desulphurization and to the removal of dust during briquette combustion." Mineralogical Magazine 67, no. 6 (2003): 1243–51. http://dx.doi.org/10.1180/0026461036760162.

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AbstractSmall domestic cooking furnaces are widely used in China. These cooking furnaces release SO2 gas and dust into the atmosphere and cause serious air pollution. Experiments were conducted to investigate the effects of vermiculite, limestone or CaCO3, and combustion temperature and time on desulphurization and dust removal during briquette combustion in small domestic cooking furnaces. Additives used in the coal are vermiculite, CaCO3 and bentonite. Vermiculite is used for its expansion property to improve the contact between CaCO3 and SO2 and to convey O2 into the interior of briquette;

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Kulagina, Liudmila, Tamara Yenutina, and Irina Kirillova. "Increasing the energy efficiency and environmental safety of the operation of smallvolume furnaces by adding a water-fuel mixture and organic components." E3S Web of Conferences 295 (2021): 02002. http://dx.doi.org/10.1051/e3sconf/202129502002.

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Industrialisation is trending manufacturing revolution vector, an urgent task is to increase the energy efficiency and environmental safety of small-volume furnaces processes, which are widely applied in the agricultural industry, asphalt concrete plants, etc. In many countries, there are practically no working coal mines or open-pit mines left. However, in a number of regions, coal waste remained in the form of coal dust, ash or in the form of sludge. Utilization of coal dust by preparation of coal-water fuel (CWF) with subsequent combustion of the mixture is currently being applied as the mo

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Zubov, Vladimir, and Dmitrii Golubev. "Prospects for the use of modern technological solutions in the flat-lying coal seams development, taking into account the danger of the formation of the places of its spontaneous combustion." Записки Горного института 250 (September 29, 2021): 534–41. http://dx.doi.org/10.31897/pmi.2021.4.6.

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Spontaneous combustion of coal remains an important problem for coal mines, which can lead to an explosion of methane and coal dust. Accidents associated with spontaneous combustion of coal can cause significant economic losses to coal mining companies, as well as entail social damage – injuries and loss of life. Accidents are known at the Kuzbass mines, which occurred as a result of negligent attitude to the danger of spontaneous combustion of coal, the victims of which were dozens of people. The analysis of emergency situations associated with spontaneous combustion of coal shows that the ex

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Du, Cui Feng, Hong Shuang Li, and Xiao Song Shi. "The Experimental Research on the New Compound Inhibitor for the Coal Heap." Advanced Materials Research 152-153 (October 2010): 1839–46. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1839.

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In this paper, aimed at the characteristic of the coal heap spontaneous combustion, the coal heap inhibitor component was initially determined through the requirements analysis of the inhibitor’s properties, the orthogonal experiment of film–forming property and heating were conducted, and the experiment of inhibition rate and permeability test about the optimal formula were carried on. The results showed that the inhibition rate of this inhibitor could reach 88%. This showed that a new measure was provided to hold back the coal heap spontaneous combustion, the inhibitor also had a function of

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A., U. Ofoefule. "Effects of Pine Needle (Pinus pinaster) dust on the performance characteristics of sub-bituminous coal briquette for Energy Generation." J. of Physical and Chemical Sciences 7, no. 2 (2019): 02. https://doi.org/10.5281/zenodo.2639878.

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The effect of pine needle (Pinus pinaster) dust (P) on sub-bituminous coal (C) briquette for energy generation was studied in terms of combustion characteristics, emission profile, and thermal degradation properties. Briquettes of 100% of the pure coal and the biomass were first produced. The ratio for the blending was 1:1 for the binary combination of the biomass with coal. The feed stocks were dried to a moisture content of 5-10% and ground to a particle size of 0.8 mm. Desulphurization, homogeneity and binding were achieved by addition of calcium hydroxide (Ca(OH)2), water and starch, respe

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Karuana, F., L. M. Nainggolan, A. S. Ruhiyat, H. P. Putra, E. Listijorini, and Hariana. "Preliminary Study of Slagging Fouling and Corrosion Coal Co-Firing with Biomass and Synthetic Waste in Drop Tube Furnace." IOP Conference Series: Earth and Environmental Science 1201, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1755-1315/1201/1/012001.

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Abstract Synthetic waste may be used as biomass fuel in a coal-fired power plant (CFPP) or as part of a coal mixture via co-firing. Differences in characteristics can cause problems during combustion, especially in plastic waste containing high alkali and chlorine content. The purpose of this research is to analyze the features of coal combustion with biomass and synthetic waste mixture to assess the effects of combustion. Combustion is conducted in a drop tube furnace (DTF) by analyzing the possibility of slagging, fouling and corrosion of the ash produced from each fuel. From the results of

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Fan, Tao, Zhenyi Liu, Jiting Ouyang, and Mingzhi Li. "Synthesis and performance characterization of an efficient coal dust suppressant for synergistic combustion with coal dust." Journal of Environmental Management 269 (September 2020): 110854. http://dx.doi.org/10.1016/j.jenvman.2020.110854.

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Manikovsky, Pavel M. "Safe quality Management of Coals Using Digital Models of Minerals at the Kuta Brown Coal Deposit." Transbaikal State University Journal 29, no. 2 (2023): 8–23. http://dx.doi.org/10.21209/2227-9245-2023-29-2-8-23.

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The purpose of the research is to substantiate the need for preliminary planning with the use of block models in the extraction of TPI as an important element of designing an economically and environmentally efficient enterprise for the development of a deposit of solid minerals. The object of the study is the Kuta brown coal deposit, which has areas of coal with increased concentrations of natural radionuclides. The method of planning the quality of coals, taking into account the hazard criterion and products of their processing with the use of Micromine Alastri software (software) is conside

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Szatyłowicz, Ewa, and Iwona Skoczko. "Evaluation of the PAH Content in Soot from Solid Fuels Combustion in Low Power Boilers." Energies 12, no. 22 (2019): 4254. http://dx.doi.org/10.3390/en12224254.

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The emission of carbon compounds (in the form of soot) to the atmosphere has a significant impact on the environment and human health. Air pollution with combustion products, having a unique combination of physical and chemical properties, is an important component of very fine suspended dust, which is emitted from various sources related to combustion processes. The carbon compounds in aerosol form and deposited in the substrate are found all over the Earth. The paper presents results of comparative research on the content of 16 polycyclic aromatic hydrocarbons (PAH) in soot samples obtained

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