Experimental study on the simultaneous desulfurization and denitrification by duct injection

Abstract： The highly active absorbent with oxidization based on fly ash, lime and additive was prepared.Experiments of simultaneous desulfurization and denitrification were carried out using fixture bed and duct injection.The influencial factors for the absorptive capacity of the absorbent were studied. The absorptive capacities of 120.7mg for SO2 and 43.7 mg for NOx were achieved at a Ca/(S + N) molar ratio 1.2, respectively, corresponding removal efficiencies of 87% and 76%, while spent absorbent appeared in the form of dry powder. The optimal temperature and humidity of flue gas treated with this process were shown to be approximately 50℃, and 5%respectively. The mechanism of removal for SO2 and NOx was investigated. In comparison with traditional dry FGD,this process appears to have lower cost, less complicated configuration and simpler disposal of used absorbent. The valuable references can be provided for industrial application by this process. The foreground of application will be vast in China and in the world. 作 者： ZHAO Yi    FU Yan-chun    MA Shuang-chen    HUANG Jian-jun   作者單位： School of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, China  期 刊： 環(huán)境科學(xué)學(xué)報(bào)(英文版)  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(4)  分類號(hào)： X511  Keywords： simultaneous desulfurization and denitrification    duct injection    absorptive capacity   

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