Study of the influence of gas environment on thermal decomposition of composite biomass with varying temperature
| Parent link: | Biomass Conversion and Biorefinery.— .— New York: Springer Nature Vol. 15, iss. 13.— 2025.— P. 20025-20045 |
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| Summary: | Currently, there are not enough studies related to the co-pyrolysis of mixed biomass. The main objective was to identify the conditions when the efficiency of pyrolysis of mixed biomass in a gas medium with a variable component composition and temperature can be significantly improved. The paper presents experimental research findings for the integral characteristics of pyrolysis of mixed biomass heated in a reactor filled with gas of different compositions and temperatures. The novelty of the research consists in identifying conditions when the composition of gas produced by mixed biomass pyrolysis can be significantly improved. The present study investigates the effect of H2O, CO2, and temperature of the gas medium on the gas composition of biomass pyrolysis. Besides, the composition of biomass was varied: sawdust, straw, and leaves. It was found that with an increase in the pyrolysis temperature from 300 to 700 °C, the concentrations of H2 and CH4 increase by 40–97%. An increase in biomass moisture content from 20 to 60% led to the formation of a larger amount of gas and a decrease in the solid residue to 37%. Water vapor turned out to be the most attractive pyrolysis medium for obtaining H2 and CH4 compared to air and flue gases. Pyrolysis in a flue gas environment was characterized by an increase in the average concentrations of hydrogen, carbon monoxide, and methane by 17, 10, and 42%, respectively. Final composition of produced gas and ash residue after biomass pyrolysis were used to calculate relative efficiency indicators of the process. These indicators can be increased by varying the characteristics of the initial gas medium and such conditions were identified. It is possible to ensure a severalfold increase in H2, CH4, and CO, while decreasing the mass of ash residue by 20–40% by varying the pyrolyzing medium temperature, amount of water steam, oxidizer, and CO2 Текстовый файл AM_Agreement |
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2025
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| Online Access: | https://doi.org/10.1007/s13399-025-06573-x |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=679174 |