Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/31641
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Title

Trace elements in coal and their behaviour during combustion in a large power station

AuthorsQuerol, Xavier CSIC ORCID ; Fernandez-Turiel, J. L. CSIC ORCID ; López Soler, Ángel CSIC
KeywordsCoal
Trace elements
Combustion
Issue DateMar-1995
PublisherElsevier
CitationFuel 74(3): 331-343 (1995)
AbstractThe trace elements (As, B, Ba, Be, Bi, Cd, Co, Cr, Cs, Cu, Ga, Ge, Hg, Li, Mn, Mo, Ni, Pb, Rb, Sb, Se, Sn, Sr, Ta, Th, Tl, U, V, W, Y, Zn, Zr and REE) in a subbituminous coal and their behaviour during combustion in a large power station were characterized by their content and distribution in the fuel (organic and/or inorganic affinities) and in the combustion wastes (partition and volatility). Samples were fractionated by density and magnetic separations and cascade impactors. Quantitative analyses were performed by X-ray diffraction, ICP-MS, ICP-AES, AAS and ICP-AES with hydride generation. Among the findings is the important role of anhydrite (CaSO4) in the sorption of trace elements such as As, B, Ge, Se, Pb, Mo, Zn and Tl from flue gas and in the reduction of emissions of these potentially toxic elements. Calcium oxide has a high sorption capacity for some of the elements studied. This sorption phenomenon and the condensation, mainly as fine fly ash particles, of important fractions of the trace elements during the cooling of flue gas significantly reduce the gaseous emissions of potentially toxic trace elements from coal combustion in the power station studied.
Description13 páginas, 7 figuras, 7 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/0016-2361(95)93464-O
URIhttp://hdl.handle.net/10261/31641
DOI10.1016/0016-2361(95)93464-O
ISSN0016-2361
Appears in Collections:(Geo3Bcn) Artículos

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