Dolomites as SO 2 Sorbents in Fluid Combustion Technology

Elżbieta Hycnar, Tadeusz Ratajczak and Magdalena Sęk
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Elżbieta Hycnar: Department of Mineralogy, Petrography and Geochemistry, University of Science and Technology in Cracow, 30-059 Cracow, Poland
Tadeusz Ratajczak: Mineral and Energy Economy Research Institute of Polish Academy of Science in Cracow, 31-261 Cracow, Poland
Magdalena Sęk: Department of Mineralogy, Petrography and Geochemistry, University of Science and Technology in Cracow, 30-059 Cracow, Poland

Resources, 2020, vol. 9, issue 10, 1-21

Abstract: Dolomites are not used as SO 2 sorbents in fluid combustion technology. The literature data show fundamental discrepancies in the possibility of such use. They mainly concern the role of magnesium in the sorption process of SO 2 and the durability of desulfurization products under high-temperature conditions. The article demonstrates that MgO is actively involved in the SO 2 binding under fluidized furnace conditions. The resulting products of sulfation contain magnesium in their compositions, and their thermal transformations begin only after the temperature exceeds 1100 °C. It has been shown that dolomites are a potential raw material for the production of SO 2 sorbents for fluid combustion technology, and their use is justified due to the higher desulfurization efficiency. Parameters of dolomite descriptions were given, by which it will be possible to predict the effects of flue gas desulfurization before the dolomites’ use in industrial conditions. It has been shown that there are opportunities to expand the domestic raw-material base for the production of SO 2 sorbents, based on both dolomite resources present in deposits and dolomite waste accumulated in dumps, as well as generated during the current exploitation and processing of dolomites.

Keywords: dolomite sorbent; desulfurization; role of Mg in absorption SO 2; texture parameters and the efficiency of SO 2 absorption (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2020
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