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Effects of Organic and Inorganic Additives on Selective Non Catalytic Reduction Reaction of NOx in a Pilot Scale Flow Reactor  

Park, Soo Youp (Dept. of Environmental Engineering, Kwangwoon University)
Yoo, Kyung Seun (Dept. of Environmental Engineering, Kwangwoon University)
Lee, Joong Kee (Eco-Nano Research Center, Korea Institute of Science and Technology)
Park, Young Kwon (Faculty of Environmental Engineering, University of Seoul)
Publication Information
Korean Chemical Engineering Research / v.44, no.5, 2006 , pp. 540-546 More about this Journal
Abstract
Effects of organic and inorganic additives on the SNCR reaction of NOx were investigated in a pilot scale flow reactor with a variation of operating parameters. NOx reduction efficiency increased with the increase of a residence time and an initial NOx concentration. NOx reduction reaction by urea solution started to appear about 850 and then reached to maximum value around $970^{\circ}C$. NOx reduction efficiency also increased with the increase of NSR (Normalized Stoichiometric Ratio) up to 2.0. Addition of ethanol and phenol as an organic additives shifted the optimum temperature window to lower region with decreasing the maximum NOx reduction efficiency. This might be due to the side reaction of hydrocarbon in ethanol structure. NaOH addition widened the temperature window and enhanced the NOx reduction efficiency about 10％ due to the chain reaction of NaOH and the reduction of $N_2O$.
Keywords
NOx; SNCR; NOxOUT; Urea; Additives;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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