High-Temperature Desulfurization of Fuel Gas with Fluidized Bed of Dolomite and That of Metal Oxide-Dolomite
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The desulfurization of fuel gas was studied by use of fluidize bed of dolomite and that of metal oxide-dolomite at temperature range of 400-900°C. The gas composition studied includes H<SUB>2</SUB>S, H<SUB>2</SUB>, CO, CO<SUB>2</SUB>, H<SUB>2</SUB>O and N<SUB>2</SUB>.<BR>It was found that dolomite was one of the active sorbents for the hydrogen sulfide removal above the reaction temperature of 700°C rather than limestone, Fe<SUB>2</SUB>O<SUB>3</SUB> and CuO.<BR>Furthermore, the results of the experiments with dolomite suggested that dolomite reduced the concentration of H<SUB>2</SUB>S in the fuel gas to its equilibrium value according to the following two reactions.<BR>700-900°C CaO+H<SUB>2</SUB>S=CaS+H<SUB>2</SUB>O<BR>below 700°C CaO+H<SUB>2</SUB>S=CaS+CO<SUB>2</SUB>+H<SUB>2</SUB>O<BR>The desulfurization activity of dolomite was improved at temperatures in the range 500-900°C by addition of metal oxides except that of Fe<SUB>2</SUB>O<SUB>3</SUB>. Particulary, CuO-dolomite removed 99% of H<SUB>2</SUB>S in the fuel gas during 3 hr of reaction at 700°C.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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