期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 22, 期 2, 页码 208-213出版社
KOREAN INST CHEM ENGINEERS
DOI: 10.1007/BF02701486
关键词
NaClO2; wetted wall column; removal efficiency; DeSO(x); DeNO(x)
The effect of feeding rate of NaClO2 solution, inlet SO2 and NO concentration, [NaClO2]]/[SO2+NO] molar ratio (eta), L/G ratio and, solution pH on the simultaneous removal of SOx/NOx has been investigated in a wetted-wall column. Both SO, and NOx removal efficiencies are enhanced with the increasing feeding rate of NaClO2 solution and attain a steady state. NOx removal efficiency increases with increasing SO2 concentration, but SO2 removal remains unaffected with increasing NO concentration. In an acidic medium, DeSO(x) and DeNO(x) efficiency increased with increasing [NaClO2]/[SO2+NO,] molar ratio and attained a steady state. NO, removal starts only after the complete removal of SOx. The excess of NaClO2 does not enhance NOx removal efficiency. Solution pH does not affect the DeSO(x) and DeNO(x) efficiency. The maximum SO2 and NOx removal efficiencies achieved at the typical operating conditions of commercialized FGD processes are about 100 and 67%, respectively.
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