Ceramics-Silikáty 54, (1) 85 - 88 (2010) |
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THE CAUSATION OF HIGH LIMESTONE CONSUMPTION IN COAL DESULFURIZATION FLUIDIZED BED BOILER
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Buryan Petr 1, Vejvoda Josef 1, Krátký Jiří 2,
Veverka Luboš 2
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1 Department of Gas, Coke and Air Pollution Control, Institute of Chemical Technology Prague,
Technická 5, 166 28 Prague, Czech Republic
2 ECKG Kladno, limited, Dubská 257, 272 03 Kladno, Czech Republic
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Keywords: Limestone, Fluidized bed boilers, Flue gas desulfurization
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Laboratory research of the reactivity of limestone used for desulfurization of coal fluidized bed boilers have shown that
reactivity of CaO after limestone calcination process in boiler is significantly influenced by reactions of CaO with SiO₂,
Al₂O₃ and Fe₂O₃ contained in ash. The reaction products do not react with SO₂ and consumption of limestone should be
extremely high. Quantity and composition of the formed compounds influence of surface of CaO produced from limestone at
high temperatures. It is useful to take into account the influence of the compounds coming from coal and limestone found in
laboratory tests. |
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