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Siberian scientists have found a way to increase the efficiency of fuel mixtures

Employees of the Siberian Federal University (SFU) and Tomsk Polytechnic University (TPU) have found ways to improve the efficiency of fuel mixtures that are promising in terms of use in the heat industry, the Russian Ministry of Education and Science told RIA Novosti.

Multicomponent fuel mixtures are a type of energetic solid fuel produced on the basis of a group of combustible substances. Coal mixtures are potentially applicable as fuel in industrial heating boilers. It is believed that in the future they will be able to replace conventional coal, since the new fuel will be consumed in smaller quantities than traditional ones, due to an increase in the calorific value of combustion – this will help save natural resources.

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SFU and TPU specialists have studied the combustion processes of two-and three-component solid fuel mixtures that can be used to solve problems in the thermal power industry. Three-component mixtures with the addition of 30% partially gasified coal proved to be the best in the experiment - they quickly ignite and have high energy characteristics.

Partial gasification is a thermochemical process of processing solid fuel by reacting it with oxygen, and it is this process that turns the fuel into a combustible gas and carbonizate. Combustible gas is obtained with a low calorific value, so it is used as a by-product, and the main product is high-calorie carbonizate. "The involvement of high-calorie carbonized coals in the fuel and energy complex is a promising direction in the heat and power industry. But switching to pure carbonizate combustion is economically impractical, it is too expensive, so we suggest adding no more than 30% carbonizate to brown coals to increase the caloric content of the fuel mixture" said Andrey Zhuikov, head of the Educational and Scientific Laboratory of the Department of Heat Engineering and Hydro-Gas Dynamics of Siberian Federal University.

Dmitry Glushkov, co-author of the paper and Associate Professor at the TPU Research School of High-Energy Process Physics, noted that the practical application of multicomponent fuel mixtures makes it possible to jointly solve several interrelated problems.

"Achieving positive energy, environmental and economic effects in comparison with currently widely used solid fuels requires a comprehensive study of the combustion processes of solid fuel mixtures," Glushkov added.

The study was supported by a grant from the Russian Science Foundation.



Source: https://ria.ru/20220920/uchenye-1818026297.html


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