| http://www.w3.org/ns/prov#value | - In a preferred variation, sodium hydrogen carbonate, which has an average particle size of 1 to 100 ??m, particularly of 5to 40 ??m and especially of 10 to 35 ??m, is sprayed dry into a reactor or into the flue gas duct, preferably counter to the direction of flow, and mixed with the flue gases.
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