Effect of boiler output on trace element partitioning during coal combustion in two fluidised-bed power stations
✍ Scribed by Z Klika; L Bartoňová; D.A Spears
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 891 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
✦ Synopsis
The main aim of this study was a detailed comparison of trace element partitioning during combustion of bituminous coal and lignite in two circulating ¯uidised-bed units at 40 and 100% boiler output. The elements considered here are: S, Cl, Br, V, Cr, Co, Ni, Cu, Zn, Ge, As, Se, Sn, Sb, W, Hg, and Pb. The trace element concentrations in combustion products show enrichment of most of the elements in ¯y ash related to bottom ash as well as the slight element enrichment in ¯y ash at 40% boiler output compared with the 100% output. Using an element balance calculation the proportion of each element in bottom ash, ¯y ash and emissions was determined. Results showed that at both boiler outputs the highest relative percentages of elements that entered into emissions were Hg and Cl.