Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions
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2021
Authors
Milicević, AleksandarBelošević, Srđan V.
Crnomarković, Nenad
Tomanović, Ivan
Stojanović, Andrijana
Tucaković, Dragan
Deng, Lei
Che, Defu
Article (Published version)
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The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex pro-cesses in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under vari-able boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed com-puter code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-comb...ustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerody-namics affect the abatement of pollutants. This study may help the global effort s in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.
Keywords:
variable load / Numerical analysis / in-house software / fuel flexibility / co-firing / boiler furnaceSource:
International Journal of Heat and Mass Transfer, 2021, 181Publisher:
- Pergamon-Elsevier Science Ltd, Oxford
Funding / projects:
- Ministry of Education, Science and Technological Development of the Republic of Serbia
DOI: 10.1016/j.ijheatmasstransfer.2021.121728
ISSN: 0017-9310
WoS: 000706761800004
Scopus: 2-s2.0-85114039962
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Mašinski fakultetTY - JOUR AU - Milicević, Aleksandar AU - Belošević, Srđan V. AU - Crnomarković, Nenad AU - Tomanović, Ivan AU - Stojanović, Andrijana AU - Tucaković, Dragan AU - Deng, Lei AU - Che, Defu PY - 2021 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3491 AB - The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex pro-cesses in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under vari-able boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed com-puter code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerody-namics affect the abatement of pollutants. This study may help the global effort s in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - International Journal of Heat and Mass Transfer T1 - Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions VL - 181 DO - 10.1016/j.ijheatmasstransfer.2021.121728 ER -
@article{ author = "Milicević, Aleksandar and Belošević, Srđan V. and Crnomarković, Nenad and Tomanović, Ivan and Stojanović, Andrijana and Tucaković, Dragan and Deng, Lei and Che, Defu", year = "2021", abstract = "The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex pro-cesses in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under vari-able boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed com-puter code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerody-namics affect the abatement of pollutants. This study may help the global effort s in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "International Journal of Heat and Mass Transfer", title = "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions", volume = "181", doi = "10.1016/j.ijheatmasstransfer.2021.121728" }
Milicević, A., Belošević, S. V., Crnomarković, N., Tomanović, I., Stojanović, A., Tucaković, D., Deng, L.,& Che, D.. (2021). Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer Pergamon-Elsevier Science Ltd, Oxford., 181. https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728
Milicević A, Belošević SV, Crnomarković N, Tomanović I, Stojanović A, Tucaković D, Deng L, Che D. Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer. 2021;181. doi:10.1016/j.ijheatmasstransfer.2021.121728 .
Milicević, Aleksandar, Belošević, Srđan V., Crnomarković, Nenad, Tomanović, Ivan, Stojanović, Andrijana, Tucaković, Dragan, Deng, Lei, Che, Defu, "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions" in International Journal of Heat and Mass Transfer, 181 (2021), https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728 . .