Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions

Zhuikov, Andrey; Pyanykh, Tatyana; Hramtsov, Egor; Grishina, Galina; Zhuikova, Yana; Glushkov, Dmitrii; Pleshko, Andrey; Gulkin, Kirill; Kuznetsov, Petr

doi:10.3390/en19184435

Open AccessArticle

Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions

by

Andrey Zhuikov

^1,*

,

Tatyana Pyanykh

¹,

Egor Hramtsov

¹,

Galina Grishina

¹,

Yana Zhuikova

^1,2,

Dmitrii Glushkov

²

,

Andrey Pleshko

²

,

Kirill Gulkin

² and

Petr Kuznetsov

^1,3

¹

Polytechnic School, Siberian Federal University, 79 Svobodny Avenue, Krasnoyarsk 660041, Russia

²

Research School of High-Energy Physics, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk 634050, Russia

³

Institute of Chemistry and Chemical Technology, Siberian Branch of Russian Academy of Sciences, 50/24 Akademgorodok, Krasnoyarsk 660036, Russia

^*

Author to whom correspondence should be addressed.

Energies 2026, 19(18), 4435; https://doi.org/10.3390/en19184435 (registering DOI)

Submission received: 31 July 2026 / Revised: 6 September 2026 / Accepted: 16 September 2026 / Published: 19 September 2026

(This article belongs to the Special Issue Waste to Energy: Low-Carbon Resource and Energy Utilization from Solid Wastes with Pollution Control)

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Abstract

In the present study, using advanced methodologies together with analytical and experimental equipment, the ignition and combustion characteristics were determined for coal-based fuels, sorbent derived from this coal, and oil-impregnated sorbent (33.3 wt.% oil), as well as blended compositions of coal with oil-impregnated sorbent, where the mass fraction of the latter in the mixture was varied from 10 to 30%. By means of simultaneous thermal analysis, high-speed video recording under radiant-convective (500–800 °C) and radiant-conductive (600–1000 °C) heating conditions, and flue gas composition analysis, the principal combustion patterns and characteristics of the fuel set were established. The following parameters were determined: ignition temperature T_i, burnout temperature T_b, maximum R_max and mean R_mean mass loss rates, integral combustion index S, ignition delay time t_d, as well as CO, CO₂, and NO_x concentrations in the flue gases. The experimental results indicate that the addition of 20% oil-impregnated sorbent to coal yields the maximum combustion index (3.18 min⁻²·°C⁻³) and the lowest burnout temperature (537 °C), whereas at a 10% addition, the highest burnout efficiency (98.4%) and the shortest ignition delay time in a heated air flow are achieved. Co-combustion of coal with 10–20% oil-impregnated sorbent is a promising approach for spent sorbent utilization while maintaining high energy performance of solid fuel combustion.

Keywords: coal; sorbent; oil; co-combustion; ignition delay time; emissions

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MDPI and ACS Style

Zhuikov, A.; Pyanykh, T.; Hramtsov, E.; Grishina, G.; Zhuikova, Y.; Glushkov, D.; Pleshko, A.; Gulkin, K.; Kuznetsov, P. Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions. Energies 2026, 19, 4435. https://doi.org/10.3390/en19184435

AMA Style

Zhuikov A, Pyanykh T, Hramtsov E, Grishina G, Zhuikova Y, Glushkov D, Pleshko A, Gulkin K, Kuznetsov P. Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions. Energies. 2026; 19(18):4435. https://doi.org/10.3390/en19184435

Chicago/Turabian Style

Zhuikov, Andrey, Tatyana Pyanykh, Egor Hramtsov, Galina Grishina, Yana Zhuikova, Dmitrii Glushkov, Andrey Pleshko, Kirill Gulkin, and Petr Kuznetsov. 2026. "Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions" Energies 19, no. 18: 4435. https://doi.org/10.3390/en19184435

APA Style

Zhuikov, A., Pyanykh, T., Hramtsov, E., Grishina, G., Zhuikova, Y., Glushkov, D., Pleshko, A., Gulkin, K., & Kuznetsov, P. (2026). Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions. Energies, 19(18), 4435. https://doi.org/10.3390/en19184435

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Combustion Characteristics of Oil-Impregnated Sorbent Under Different Heating Conditions

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