Experimental Research on Flue Gas Desulfurization by Ethylen ediamine/Phosphoric Acid Solution

The flue gas desulfurization capability of ethylenediami ne /phosphoric acid solution in packing tower was studied.The desulfurization effic iency of absorbing solution was investigated under different ratio of liquid to gas,temperature,pH,concentration and the content of sulfur dioxide.Experimental results indicated that the appropriate operational conditions were ratio of liqu id to gas L/G=06-10,concentration of ethylenediamine 03 mol/L,pH=60 -75,absorption temperature 40-60 ℃ and SO2 mass concentration of inlet abs orbent 6-8 g/L.