Release to the gas phase of metals, S and Cl during combustion of dedicated waste fractions

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Release to the gas phase of metals, S and Cl during combustion of dedicated waste fractions. / Pedersen, Anne Juul; van Lith, Simone Cornelia; Frandsen, Flemming; Steinsen, S. D.; Holgersen, Lilian Beenfeldt.

In: Fuel Processing Technology, Vol. 91, No. 9, 2010, p. 1062-1072.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

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Pedersen, Anne Juul; van Lith, Simone Cornelia; Frandsen, Flemming; Steinsen, S. D.; Holgersen, Lilian Beenfeldt / Release to the gas phase of metals, S and Cl during combustion of dedicated waste fractions.

In: Fuel Processing Technology, Vol. 91, No. 9, 2010, p. 1062-1072.

Publication: Research - peer-reviewJournal article – Annual report year: 2010

Bibtex

@article{3f739d4c783a4f4bb721446a18b42384,
title = "Release to the gas phase of metals, S and Cl during combustion of dedicated waste fractions",
publisher = "Elsevier BV",
author = "Pedersen, {Anne Juul} and {van Lith}, {Simone Cornelia} and Flemming Frandsen and Steinsen, {S. D.} and Holgersen, {Lilian Beenfeldt}",
year = "2010",
doi = "10.1016/j.fuproc.2010.03.013",
volume = "91",
number = "9",
pages = "1062--1072",
journal = "Fuel Processing Technology",
issn = "0378-3820",

}

RIS

TY - JOUR

T1 - Release to the gas phase of metals, S and Cl during combustion of dedicated waste fractions

A1 - Pedersen,Anne Juul

A1 - van Lith,Simone Cornelia

A1 - Frandsen,Flemming

A1 - Steinsen,S. D.

A1 - Holgersen,Lilian Beenfeldt

AU - Pedersen,Anne Juul

AU - van Lith,Simone Cornelia

AU - Frandsen,Flemming

AU - Steinsen,S. D.

AU - Holgersen,Lilian Beenfeldt

PB - Elsevier BV

PY - 2010

Y1 - 2010

N2 - The release to the gas phase of inorganic elements such as alkali metals. Cl, S, and heavy metals in Waste-to-Energy (WtE) boilers is a challenge. Besides the risk of harmful emissions to the environment, inorganic elements released from the grate may cause severe ash deposition and corrosion problems in the boiler. subsequently leading to decreased overall efficiency and costly, unscheduled shut-downs. The objective of this study was to obtain quantitative data on the release of inorganic elements from dedicated, well-characterized waste fractions; in order to understand the release pattern and the link to the formation of fly ash and aerosols in full-scale waste incinerators. The release of metals, S and Cl from four dedicated waste fractions was quantified as a function of temperature in a lab-scale fixed-bed reactor. The waste fractions comprised chromated copper arsenate (CCA) impregnated wood, shoes, automotive shredder waste and PVC (poly-vinyl-chloride). The waste fractions were characterized by use of wet chemical analysis, and, based on the chemical composition of the initial fuel sample and the ash residue after the experiments; the release of inorganic elements was quantified. The lab-scale release results were then compared with results from a related, full-scale partitioning study, in which test runs with the addition of similar, dedicated waste fractions to a base-load waste had been performed in a grate-fired WtE boiler. In general, the elements Al, Ca, Cr, Cu, Fe, Mg, Si and Ti were not released, in consistency with the non-volatile nature of these elements. The elements Pb, Zn, Cl, S, Na, K and As, on the other hand, were released to a significant extent, and the release pattern was found to be both temperature dependent and fuel specific. Possible release mechanisms were discussed in relation to the chemical characteristics of each fuel, and some of the same release mechanisms as previously suggested for e.g. biomass-based fuels in the literature also seemed to apply for the present waste fractions.

AB - The release to the gas phase of inorganic elements such as alkali metals. Cl, S, and heavy metals in Waste-to-Energy (WtE) boilers is a challenge. Besides the risk of harmful emissions to the environment, inorganic elements released from the grate may cause severe ash deposition and corrosion problems in the boiler. subsequently leading to decreased overall efficiency and costly, unscheduled shut-downs. The objective of this study was to obtain quantitative data on the release of inorganic elements from dedicated, well-characterized waste fractions; in order to understand the release pattern and the link to the formation of fly ash and aerosols in full-scale waste incinerators. The release of metals, S and Cl from four dedicated waste fractions was quantified as a function of temperature in a lab-scale fixed-bed reactor. The waste fractions comprised chromated copper arsenate (CCA) impregnated wood, shoes, automotive shredder waste and PVC (poly-vinyl-chloride). The waste fractions were characterized by use of wet chemical analysis, and, based on the chemical composition of the initial fuel sample and the ash residue after the experiments; the release of inorganic elements was quantified. The lab-scale release results were then compared with results from a related, full-scale partitioning study, in which test runs with the addition of similar, dedicated waste fractions to a base-load waste had been performed in a grate-fired WtE boiler. In general, the elements Al, Ca, Cr, Cu, Fe, Mg, Si and Ti were not released, in consistency with the non-volatile nature of these elements. The elements Pb, Zn, Cl, S, Na, K and As, on the other hand, were released to a significant extent, and the release pattern was found to be both temperature dependent and fuel specific. Possible release mechanisms were discussed in relation to the chemical characteristics of each fuel, and some of the same release mechanisms as previously suggested for e.g. biomass-based fuels in the literature also seemed to apply for the present waste fractions.

KW - Release

KW - Heavy metals

KW - Ash

KW - Waste

KW - Combustion

U2 - 10.1016/j.fuproc.2010.03.013

DO - 10.1016/j.fuproc.2010.03.013

JO - Fuel Processing Technology

JF - Fuel Processing Technology

SN - 0378-3820

IS - 9

VL - 91

SP - 1062

EP - 1072

ER -