Author/Authors :
Han، J. نويسنده , , Yao، X. نويسنده College of Resource and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, China , , Qin، C. L. نويسنده College of Food and Bioengineering,Department of Biotechnology, Henan Engineering Laboratory of Livestock Disease Diagnosing and Food Safety Testing,Henan University of Science and Technology,Luoyang,China كواين, سواي-لي , Jiang، M. نويسنده , , Xing، F. T. نويسنده College of Resource and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, China , , Chen، W. نويسنده ,
Abstract :
In this paper, the simultaneous absorption of SO2 and NO from the simulated sintering flue gas
by ammonia-FeIIEDTA complex solution was investigated in a pilot scale reactor. The experiment results
showed that the maximum removal efficiencies of SO2 and NOx by ammonia-FeIIEDTA complex solution
scrubbing were 99% and 68.26%, respectively. However, the denitiration efficiency was gradually declined
due to the oxidation of FeIIEDTA into FeIIIEDTA. At the same time, FeIIIEDTA did not have the ability of
binding NO. In order to keep the high denitration efficiency, FeIIIEDTA regeneration by iron and the surplus
iron ion removal by the precipitation were proposed. Moreover, the optimum parameters of the surplus iron
ion removal were also investigated, the experimental results showed that the optimum addition of ammonia
carbonate was 0.4 g/L. After the regeneration and precipitation, the denitration efficiency by ammonia-
FeIIEDTA complex solution could be kept at 55%, and the desulfurization efficiency in the test was above
99%.
