Artículo
Flame confinement in biomass combustion systems for particles abatement
Autor/es | Ciria Matamoros, Desiree
Orihuela Espina, María del Pilar Moreno Naranjo, Paloma Chacartegui, Ricardo Ramírez Rico, Joaquín Becerra Villanueva, José Antonio |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Energética Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2022 |
Fecha de depósito | 2023-11-29 |
Publicado en |
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Resumen | This work explores the use of open-pore, inert ceramic foams with different pore sizes as particle abatement
systems in small biomass combustion systems. Porous foams made of silicon carbide with pore sizes 10 to ... This work explores the use of open-pore, inert ceramic foams with different pore sizes as particle abatement systems in small biomass combustion systems. Porous foams made of silicon carbide with pore sizes 10 to 60 pores-per-inch were installed in an in-house designed combustion unit operated with wood pellets. Their effects on the temperature distribution inside the chamber, particulate and gases emissions were studied using different airflow rates in the reaction-limited regime (low equivalence ratio) to minimise stoichiometric factors. The influence of pore size, foam position with respect to the flame and space velocity were assessed. The confinement of the flame with inert foams was found to substantially modify the temperature distribution in the combustion chamber, improve the air-fuel mixture, and favour the thermal decomposition of the pellet, leading to a reduction in particulate emissions when compared to free-flame combustion at the same experimental conditions. In general, the amount of particulate matter was found to decrease by up to one order of magnitude as the pore size of the foam was reduced, while the temperature gradient in the combustion chamber was increased. Nitrogen oxides and carbon dioxide emissions were essentially unchanged, irrespectively of the pore size of the foam. It is expected that these values will be improved with longer residence times, as happens in operations with reduced excess air ratios. These results suggest that it is possible to control pollutants derived from domestic heating within the most restrictive current regulations on particulate emissions by integrating flame confinement designs with better operating practices and efficient abatement systems. |
Agencias financiadoras | European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Junta de Andalucía Universidad de Sevilla Ministerio de Ciencia e Innovación (MICIN). España |
Identificador del proyecto | US-1265636
MAT2016-76526-R VI PPI T-US |
Cita | Ciria Matamoros, D., Orihuela Espina, M.d.P., Moreno Naranjo, P., Chacartegui, R., Ramírez Rico, J. y Becerra Villanueva, J.A. (2022). Flame confinement in biomass combustion systems for particles abatement. Energy Conversion and Management, 264, 115706. https://doi.org/10.1016/j.enconman.2022.115706. |
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