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Emissions from the combustion of eucalypt and pine chips in a fluidized bed reactor

Journal of Environmental Sciences 2016年第4期28卷 246-258页

作者： E.D.vicente L.A.C.Tarelho E.R.Teixeira M.Duarte T.Nunes C.Colombi v.gianelle G.O.da Rocha A.Sanchez de la Campa C.A.Alves Centre for Environmental and Marine Studies Department of Environment and PlanningUniversity of Aveiro Regional Centre for Air Quality Monitoring Environmental Monitoring Sector ARPA Federal University of Bahia Chemical Institute40170-290Campus de Ondina Centre for Research in Sustainable Chemistry (CIQSO) Joint Research Unit to CSIC "Atmospheric Pollution"University of HuelvaCampus El Carmen

Interest in renewable energy sources has increased in recent years due to environmental concerns about global warming and air pollution,reduced costs and improved efficiency of *** the European Union（EU）energy directive,biomass is a suitable renewable *** aim of this study was to experimentally quantify and characterize the emission of particulate matter（PM（2.5））resulting from the combustion of two biomass fuels（chipped residual biomass from pine and eucalypt）,in a pilot-scale bubbling fluidized bed（BFB）combustor under distinct operating *** variables evaluated were the stoichiometry and,in the case of eucalypt,the leaching of the *** CO and PM（2.5）emission factors were lower when the stoichiometry used in the experiments was higher（0.33±0.1 g CO/kg and 16.8±1.0 mg PM（2.5）/kg,dry gases）.The treatment of the fuel by leaching before its combustion has shown to promote higher PM（2.5）emissions（55.2±2.5 mg/kg,as burned）.Organic and elemental carbon represented 3.1 to 30 wt.% of the particle mass,while carbonate（CO3^（2-））accounted for between 2.3 and 8.5 wt.%.The particulate mass was mainly composed of inorganic matter（71% to 86% of the PM（2.5）mass）.Compared to residential stoves,BFB combustion generated very high mass fractions of inorganic *** was the water soluble ion in higher concentration in the PM（2.5）emitted by the combustion of eucalypt,while calcium was the dominant water soluble ion in the case of pine.

关键词： Biomass Combustion Fluidized bed PM2.5emissions Chemical composition

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