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http://dx.doi.org/10.9713/kcer.2011.49.1.089

DeNOx Characteristics of Hybrid SNCR-SCR Process in a Pilot Scale Flow Reactor  

Eom, Won-Hyun (Department of Environmental Engineering, Kwangwoon University)
Yoo, Kyung-Seun (Department of Environmental Engineering, Kwangwoon University)
Kim, Sung-June (Department of Environmental Engineering, Kwangwoon University)
Publication Information
Korean Chemical Engineering Research / v.49, no.1, 2011 , pp. 89-94 More about this Journal
Abstract
DeNOx characteristics of hybrid SNCR-SCR process have been investigated in a pilot scale flow reactor. DeNOx efficiency of SNCR reaction was about 80% at $970^{\circ}C$ and hybrid SNCR-SCR process showed 92% at $940^{\circ}C$ with NSR = 2.0. Compared to SNCR process alone, hybrid SNCR-SCR process was more effective at cool side, which is lower than $940{^{\circ}C}$. It should be also noted that ammonia slip from hybrid SNCR-SCR process was below 1ppm at the condition of higher space velocity and the required catalyst volume can be decreased to 2/3 of SCR process. Key factors for DeNOx efficiency of hybrid SNCR-SCR process were found to be $NH_3$ concentration and NOx selectivity of urea injected in SNCR process.
Keywords
Hybrid SNCR-SCR; DeNOx; Urea Decomposition; $NH_3$ Slip; Pilot Scale;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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