Appearance of trace elements in co-firing fuels

A4 Konferenspublikationer


Interna författare/redaktörer


Publikationens författare: Zevenhoven M, Backman R, Skrifvars BJ, Hupa M
Redaktörer: Jia L
Förlagsort: New York
Publiceringsår: 2005
Förläggare: American Society of Mechanical Engineers, ASME
Moderpublikationens namn: Proceedings of the 18th International Conference on Fluidized Bed Combustion
Artikelns första sida, sidnummer: 697
Artikelns sista sida, sidnummer: 717
ISBN: 0-7918-4698-9
ISSN: 0197-453X


Abstrakt

With the implementation of new EU guidelines the levels of max. allowable emission levels of Cd, Tl, Hg, Sb, As, Pb, Cr, Co, Cu, Mn, Ni, V will be further restricted. This may have implications for co-​combustion of coal with waste derived fuels.

In this study chem. fractionation, i.e. a stepwise leaching procedure has been applied on coal, peat, sewage sludge, bark, impregnated wood and forest residue. With this method fuels are leached in three steps, i.e. leached with water, ammonium acetate and hydro chloric acid, resp. Both soly. in different leaching agents of main ash forming matter and the trace elements Cd, Tl, Hg, Sb, As, Pb, Cr, Co, Cu, Mn, Ni, V and Zn were studied. In this way more information became available about the characteristics of co-​firing fuels.

Thermodn. calcns. were used to show the consequences of the interaction with main ash forming elements on the partition of Cd, Hg, Pb and Zn in the gas​/ash phase.

Senast uppdaterad 2020-29-03 vid 04:19