NDLI: Characteristics of ash and particle emissions during bubbling fluidised bed combustion of three types of residual forest biomass

Content Provider	Springer Nature Link
Author	Ribeiro, João Peres Vicente, Estela Domingos Alves, Célia Querol, Xavier Amato, Fulvio Tarelho, Luís A. C.
Copyright Year	2016
Abstract	Combustion of residual forest biomass (RFB) derived from eucalypt (Eucalyptus globulus), pine (Pinus pinaster) and golden wattle (Acacia longifolia) was evaluated in a pilot-scale bubbling fluidised bed reactor (BFBR). During the combustion experiments, monitoring of temperature, pressure and exhaust gas composition has been made. Ash samples were collected at several locations along the furnace and flue gas treatment devices (cyclone and bag filter) after each combustion experiment and were analysed for their unburnt carbon content and chemical composition. Total suspended particles (TSP) in the combustion flue gas were evaluated at the inlet and outlet of cyclone and baghouse filter and further analysed for organic and elemental carbon, carbonates and 57 chemical elements. High particulate matter collection efficiencies in the range of 94–99% were observed for the baghouse, while removal rates of only 1.4–17% were registered for the cyclone. Due to the sand bed, Si was the major element in bottom ashes. Fly ashes, in particular those from eucalypt combustion, were especially rich in CaO, followed by relevant amounts of SiO$_{2}$, MgO and K$_{2}$O. Ash characteristics varied among experiments, showing that their inorganic composition strongly depends on both the biomass composition and combustion conditions. Inorganic constituents accounted for TSP mass fractions up to 40 wt%. Elemental carbon, organic matter and carbonates contributed to TSP mass fractions in the ranges 0.58–44%, 0.79–78% and 0.01–1.7%, respectively.
Starting Page	10018
Ending Page	10029
Page Count	12
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	24
Issue Number	11
e-ISSN	16147499
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-11-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomass combustion Fluidised bed Ash Particulate matter Environment Environmental Chemistry Ecotoxicology Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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