Coal of the second freshness: a new approach to assessing the quality of coal fuel has been developed at NUST “MISiS”
The properties of coal mined change over time, which greatly affects the quality of coal fuel, increases the cost of electricity, leads to additional environmental damage. In addition, coal sometimes ignites spontaneously. Proper assessment of the properties of coal fuel, as well as the risk of spontaneous combustion, are just a few applied aspects of the work performed by a team of scientists from the National Research Technological University "MISiS" under the supervision of Professor Svetlana Epstein.
Scientists of NITU "MISiS" have developed new approaches to the study of the mechanism of oxidation of coal, which can significantly affect the coal industry in Russia, the pricing of the coal market, as well as the ecology of coal regions. One of the approaches is based on the use of a modified thermogravimetry method (thermal analysis) in the analysis of samples in air and in an inert atmosphere. The obtained data will help to correctly determine the state of coal during its mining, storage and use, which will increase the efficiency of coal fuel use and thereby reduce the damage from its use. The fact is that, depending on the terms and conditions of storage, the amount of heat produced per ton of fuel can decrease on average by 20% (for brown coal), which seriously increases the costs of power engineers and the ecology of the regions.
A scientific article with research results was published in the authoritative journal Fuel , leading to the publishing group Elsevier.
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The authors of the article note that this publication is only part of a large complex work on the study of the structure, properties and behavior of coal during the whole cycle: from mining to use. “ Our laboratory has been engaged in coal research for more than ten years ,” says Svetlana Epstein, the head of the laboratory, the Physics and Chemistry of Coals laboratory, professor . - The main ideology of our work is to develop new approaches to assessing the structure and quality of fossil coals to search for new technologies for their non-fuel processing, new methodological approaches to assessing the safety of coal mining and the use of coal, as well as to assessing potential future uses of coal obtaining new materials from them). Works are carried out both under economic contracts, and at the expense of state financing. In particular, within the framework of the Federal Targeted Research and Development Program, we have implemented two projects: to study the effect of coal oxidation on safety (in terms of spontaneous combustion) and to preserve the quality indicators of coal products during storage and transportation - projects 14.B37.21.0655 and 14.575.21.0062 . These are two applied aspects of our work. In addition, new fundamental scientific approaches to estimating the tendency of coal to oxidation using new methods were considered in the papers . ”
Coal is perhaps the most heterogeneous mineral. In addition, as the study showed, for weeks and months (sometimes up to six months), which the extracted fuel spends in the warehouses of the CHP plant between production and use, its characteristics change. Therefore, for companies purchasing coal on the market, the correct assessment of the product from the point of view of its safety by the tendency to oxidation is very important. New methods will help develop a classification of coal products, which will make the coal market more civilized and transparent.
“ The research of the Physics and Chemistry of Coals research and educational testing laboratory is of great importance for the Russian coal industry ,” commented Alevtina Chernikova, rector of NITU “MISiS” . “ On the basis of the research conducted in the laboratory, more than 25 national and interstate standards in the field of solid mineral fuel and activated carbon have already been developed. The Physics and Chemistry of Coals Laboratory under the direction of Professor Svetlana Epstein, Doctor of Technical Sciences, is one of the university’s leading laboratories dealing with waste management and mineral processing, including commissioned by leading coal corporations in Russia . ”
Svetlana Abramovna Epstein
Reference: Epstein Svetlana Abramovna . Doctor of Technical Sciences, Professor. Head of the Scientific and Educational Testing Laboratory "Physics and Chemistry of Coals" of the Mining Institute of NITU "MISiS". She graduated from Dnipropetrovsk Institute of Chemical Technology (1983), defended her thesis for the degree of candidate of chemical sciences at the Institute of Fossil Fuels (1993), doctor of technical sciences (2010). Research interests: the structure of coal, spontaneous combustion of coal, petrography, mechanical properties of coal.
Scientists of NITU "MISiS" have developed new approaches to the study of the mechanism of oxidation of coal, which can significantly affect the coal industry in Russia, the pricing of the coal market, as well as the ecology of coal regions. One of the approaches is based on the use of a modified thermogravimetry method (thermal analysis) in the analysis of samples in air and in an inert atmosphere. The obtained data will help to correctly determine the state of coal during its mining, storage and use, which will increase the efficiency of coal fuel use and thereby reduce the damage from its use. The fact is that, depending on the terms and conditions of storage, the amount of heat produced per ton of fuel can decrease on average by 20% (for brown coal), which seriously increases the costs of power engineers and the ecology of the regions.
A scientific article with research results was published in the authoritative journal Fuel , leading to the publishing group Elsevier.
')
The authors of the article note that this publication is only part of a large complex work on the study of the structure, properties and behavior of coal during the whole cycle: from mining to use. “ Our laboratory has been engaged in coal research for more than ten years ,” says Svetlana Epstein, the head of the laboratory, the Physics and Chemistry of Coals laboratory, professor . - The main ideology of our work is to develop new approaches to assessing the structure and quality of fossil coals to search for new technologies for their non-fuel processing, new methodological approaches to assessing the safety of coal mining and the use of coal, as well as to assessing potential future uses of coal obtaining new materials from them). Works are carried out both under economic contracts, and at the expense of state financing. In particular, within the framework of the Federal Targeted Research and Development Program, we have implemented two projects: to study the effect of coal oxidation on safety (in terms of spontaneous combustion) and to preserve the quality indicators of coal products during storage and transportation - projects 14.B37.21.0655 and 14.575.21.0062 . These are two applied aspects of our work. In addition, new fundamental scientific approaches to estimating the tendency of coal to oxidation using new methods were considered in the papers . ”
Coal is perhaps the most heterogeneous mineral. In addition, as the study showed, for weeks and months (sometimes up to six months), which the extracted fuel spends in the warehouses of the CHP plant between production and use, its characteristics change. Therefore, for companies purchasing coal on the market, the correct assessment of the product from the point of view of its safety by the tendency to oxidation is very important. New methods will help develop a classification of coal products, which will make the coal market more civilized and transparent.
“ The research of the Physics and Chemistry of Coals research and educational testing laboratory is of great importance for the Russian coal industry ,” commented Alevtina Chernikova, rector of NITU “MISiS” . “ On the basis of the research conducted in the laboratory, more than 25 national and interstate standards in the field of solid mineral fuel and activated carbon have already been developed. The Physics and Chemistry of Coals Laboratory under the direction of Professor Svetlana Epstein, Doctor of Technical Sciences, is one of the university’s leading laboratories dealing with waste management and mineral processing, including commissioned by leading coal corporations in Russia . ”
Svetlana Abramovna Epstein
Reference: Epstein Svetlana Abramovna . Doctor of Technical Sciences, Professor. Head of the Scientific and Educational Testing Laboratory "Physics and Chemistry of Coals" of the Mining Institute of NITU "MISiS". She graduated from Dnipropetrovsk Institute of Chemical Technology (1983), defended her thesis for the degree of candidate of chemical sciences at the Institute of Fossil Fuels (1993), doctor of technical sciences (2010). Research interests: the structure of coal, spontaneous combustion of coal, petrography, mechanical properties of coal.
Source: https://habr.com/ru/post/370505/
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