Results 181 to 190 of about 21,178 (224)
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SPONTANEOUS COMBUSTION OF COALS IN PERMAFROST CONDITIONS
TRANSBAIKAL STATE UNIVERSITY JOURNAL, 2022Taking into account the prospects for the growth of coal production in the conditions of the North-East, the countries require further development of research to more reliably justify measures to prevent endogenous fires in the permafrost zone, which cause serious economic damage and worsen the environmental situation due to the release of large ...
E. Chemezov, K. Fedorov
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Exploring coal spontaneous combustion by bibliometric analysis
Process Safety and Environmental Protection, 2019Abstract Coal spontaneous combustion (CSC) is a serious problem and remains a global safety concern in coal industry. In this paper, bibliometric analysis of the worldwide scientific publications on CSC was conducted to understand the characteristics and research trends in the Science Citation Index Expanded (SCI-Expanded) database.
Fuqiang Yang, Dongyang Qiu
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Spontaneous Combustion in Coals - A Panacea
Journal of the Geological Society of India, 2004Abstract Lower Gondwana coal samples from the Ib-valley, the Talcher coalfield and the Raniganj coalfield were compared with the Tertiary coals of Upper Assam, Nagaland and Arunachal Pradesh by their chemical data in relation to crossing point temperature, petrography and rank.
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Spontaneous combustion in beds of coal particles
Symposium (International) on Combustion, 1989This paper describes a simple experimental technique to determine the ignition temperature of various cylinder-shaped beds (diameter 17–160 mm, height 10–80 mm) of a South African coal and it reports the application of thermal ignition models in interpreting and extrapolating the small scale results.
TOGNOTTI, LEONARDO +2 more
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Spontaneous combustion of coal: a Mössbauer approach
Fuel, 1992Abstract A 57 Fe Mossbauer spectroscopic study was carried out at 300 K to study the self-combustion of coal. Hyperfine parameters such as isomer shift, quadrupole splitting and the total internal magnetic field of 57 Fe nuclei were used to identify various iron-bearing species during different stages of the process.
K.L. Shrivastava +2 more
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Countermeasures against coal spontaneous combustion: a review
International Journal of Coal Preparation and Utilization, 2021Spontaneous combustion (SPONCOM) is a complex physical and chemical process involving several known and unknown variables which necessitates experimental detection methods and prediction hypotheses...
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Basic theory research of coal spontaneous combustion
Journal of Coal Science and Engineering (China), 2008Discussed latest research results of basic theory research of coal spontaneous combustion in detail, with quantum chemical theory and method and experiment systematically studied chemical structure of coal molecule, adsorption mechanism of coal surface to oxygen molecule and chemical reaction mechanism and process of spontaneous combustion of organic ...
Ji-ren Wang +4 more
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Experiment Research of Coal’s Spontaneous Combustion Characters
Advanced Materials Research, 2014On the basis of physical oxygen uptake, use the instrument to identify the spontaneous combustion of Yang quan coal, and combination the insulation oxide of coal as well as the TG-DSC experiment to analysis of low-temperature oxidation of coal, though the DSC curves, combined with the insulation oxide experimental to analysis the size of the heat.
Yan Min Zheng, Jin Feng Zhang
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Study on Spontaneous Combustion of Coal Underground
Journal of the Fuel Society of Japan, 1957石炭の自然発火は現在まで主として化学的の面より研究されてきたが炭鉱内においておこる坑内自然発火の場合はその原因になる因子が非常に多く, この原因を発見することが困難である。従つて自然発火の早期発見も困難であつた。自然発火の早期発見に関しては現在まで臭気, 湿度の変化, 温度の上昇, 特殊指示ガスなどがその要素となつていたが, これらの方法はいずれも適確な予知ができず, また発見された時はもうすでにかなり自然発火が進んでいるという状況である。筆者は本文中において温度変化による発見の方途を一歩進めて炭層温度, 炭壁温度, 気流温度の相関関係から自然発火を予知する方法を述べるとともに, アスファルト乳剤塗布による自然発火防止の基礎実験について述べる。
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Theories on Spontaneous Combustion of Coal
1993Kömürün kendiliğinden yanması, tüm kömür üreticisi ülkelerin karşılaştığı en önemli sorunlardan biridir. Bu konunun nedenini saptama çalışmaları daha önceki yüzyılda başlamıştır. Bu sorunun nedeni hakkında çeşitli kuramlar ileri sürülmüş olup bu kuramlar şu şekilde sıralanabilir: - pirit kuramı, - bakteri kuramı, - oksidasyon kuramı ve - nem kuramı. Bu
Eroğlu, Nehar, Gouws, Michael John
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