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Investigation of oxygen-enriched biomass flames in a lab-scale entrained flow reactor
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0003-1250-9683
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0001-6081-5736
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.ORCID-id: 0000-0002-6958-5508
2024 (engelsk)Inngår i: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 366, artikkel-id 131343Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Oxygen-enriched air combustion of pulverized biomass fuel is an effective method to improve char combustion and improve flame stability. Moreover, understanding the impact of O2 addition is an important step toward oxyfuel combustion, one of the most promising technologies for bioenergy with carbon capture and storage (BECCS). Our previous studies focused on flow manipulation methods, e.g., swirling co-flow and acoustic forcing, to enhance particle dispersion during biomass combustion and gasification. This work aims to extend the understanding of the effect of different manipulation methods on oxygen-enriched combustion at different levels in a lab-scale entrained flow reactor. This methodology combines the analysis of visible flame characteristics, CO and NO gas emissions, and coarse particle emissions characterization with thermogravimetric analysis and particle size distribution by dynamic imaging. The results indicated that oxygen-enriched combustion leads to lower liftoff distance and higher flame brightness. Moreover, oxygen-enriched combustion presented coarse particle emissions with finer particle size distribution and lower carbon content. The acoustic forcing further decreased the flame liftoff and decreased CO emissions, increasing combustion efficiency under conditions with similar equivalence ratios and lower momentum flux at the secondary air.

sted, utgiver, år, opplag, sider
Elsevier, 2024. Vol. 366, artikkel-id 131343
Emneord [en]
Pulverized fuel, Biomass, Acoustic excitation, Oxygen-enrichment, Combustion
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-104555DOI: 10.1016/j.fuel.2024.131343Scopus ID: 2-s2.0-85186518924OAI: oai:DiVA.org:ltu-104555DiVA, id: diva2:1843830
Forskningsfinansiär
Swedish Energy Agency, 47485-1The Kempe Foundations, SMK-1632
Merknad

Validerad;2024;Nivå 2;2024-04-02 (joosat);

Full text: CC BY License

Tilgjengelig fra: 2024-03-12 Laget: 2024-03-12 Sist oppdatert: 2024-04-02bibliografisk kontrollert

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Dal Belo Takehara, MarceloUmeki, KentaroGebart, Rikard

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