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Experimental study of the performance of a laboratory-scale ESP with biomass combustion: discharge electrode disposition, dynamic control unit and aging effect

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Experimental study of the performance of a laboratory-scale ESP with biomass combustion: discharge electrode disposition, dynamic control unit and aging effect

Cid Rodríguez, Natalia; Rico Fuentes, Juan Jesús; Pérez Orozco, Raquel; Larrañaga Janeiro, Ana
 
DATE : 2021-09-16
UNIVERSAL IDENTIFIER : http://hdl.handle.net/11093/2597
UNESCO SUBJECT : 3303.06 Tecnología de la Combustión ; 3322.05 Fuentes no Convencionales de Energía ; 3308.01 Control de la Contaminación Atmosférica
DOCUMENT TYPE : article

ABSTRACT :

The increasing use of biomass combustion systems as household appliances for heat generation is causing concern about local air quality. Areas with high concentrations of particulate matter (PM) emissions are linked to health risks. There is a need for a removal device that collects the particles before they reach the atmosphere. Electrostatic precipitators (ESPs) are the most suitable option. In this study, a laboratory-scale prototype ESP was tested with a pellet boiler. Retention efficiencies above 90% were obtained with three different discharge electrode dispositions. The continuous operation of the ESP was achieved with a dynamic control system despite fluctuations in emissions, gas conditions, etc. The accumulation of particles on inner ESP surfaces over the operation time reduced the effectiveness of the electric field, and thus retention efficiency. In this study, the retention efficiency fell from 90% to 31% in 34 h.

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