Optimisation of fuel briquettes composition

One of the possible options for the utilization of waste coal and energy industry, as well as waste wood logging and wood processing can be briquetting to obtain briquettes with increased calorific value. The aim of the work was to justify the composition of fuel briquettes on the basis of the study of the structure of components using thermogravimetric methods. The objects in this study were taken as waste coal and wood processing industry, technical hydrolysis lignin (THL). In order to predict the calorific value of fuel briquettes of different composition, three thermal measurements with different heating rates for each component were carried out. The thermal study was carried out in an air environment at heating rates of 5, 10, 20 °C/min. The results showed that, depending on the composition of the briquette and the fractional composition of its components, the activation energy varies in the range from 128.4 to 295 kJ/mol. This can be attributed to the addition of mechanically activated hydrolysis lignin as a binder through its thermoplasticization, which also has a positive effect on the briquette structure itself. Thus, during the interaction of the components of the briquette, combined into a system, their synchronisation occurs under the influence of both external and internal factors and the technological behaviour of each individual component acquires a coordinated direction. Consequently, a purposeful change in the formulation and technological parameters ensures the production of fuel briquettes of the required quality.

Keywords: Briquetting, fuel briquettes, carbon wastes, biofuels, mechanoactivation, environmental management, thermogravimetric studies, technical hydrolysis lignin.
For citation:

Aleksandrova T. N., Nikolaeva N. V., Artamonov I. S. Optimisation of fuel briquettes composition. MIAB. Mining Inf. Anal. Bull. 2022;(6−2):149—160. [In Russ]. DOI: 10.25018/0236_1493_2022_62_0_149.

Issue number: 6
Year: 2022
Page number: 149-160
ISBN: 0236-1493
UDK: 622.7
DOI: 10.25018/0236_1493_2022_62_0_149
Article receipt date: 14.01.2022
Date of review receipt: 07.04.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

Aleksandrova T. N., Dr. Sci. (Eng.), Professor, Head of minerals processing departmen, http://orcid.org/0000-0002-3069-0001, Saint Petersburg Mining University, 199106, St. Petersburg, Vasilievsky Island, 21 line 2, Russia, e-mail: Aleksandrova_tn@pers.spmi.ru; Nikolaeva N. V., Cand. Sci. (Eng.), teaching assistant of minerals processing department, https://orcid.org/ 0000-0001-7492-1847, Saint Petersburg Mining University, 199106, St. Petersburg, Vasilievsky Island, 21 line 2, Russia, e-mail: Nikolaeva_nv@pers.spmi.ru;
Artamonov I. S., PhD student, Saint-Petersburg State University Industrial Technology and Design, St. Petersburg, 198095, Russia, e-mail: peet.777@mail.ru.

For contacts:

Nikolaeva Nadezhda Valerievna, e-mail: Nikolaeva_nv@pers. spmi.ru.


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