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http://dx.doi.org/10.7464/ksct.2012.18.4.410

Computational Study on Design of the AIG for the Enhancement of Ammonia Injection in the SCR System  

Seo, Moon-Hyeok (Environmental Aerosol Engineering Laboratory, Department of Environmental Engineering, Yeungnam University)
Chang, Hyuksang (Environmental Aerosol Engineering Laboratory, Department of Environmental Engineering, Yeungnam University)
Publication Information
Clean Technology / v.18, no.4, 2012 , pp. 410-418 More about this Journal
Abstract
The performance of the ammonia injection gun (AIG) used for maximizing the utilization of reducing agent in the selective catalytic reduction (SCR) system is decided by several parameters such as the pattern of flow distribution, geometry of the air distribution manifold (ADM) and the array and geometry of nozzles. In the study, the uniformity of jet flows from the nozzles in AIG was analyzed statistically by using the computational fluid dynamics (CFD) method to evaluate the role of design parameters on the performance of the SCR system. The uniformity of jet flows from the nozzles is being deteriorated with increasing the supplying flow rate to the AIG. Distribution rates to each branch pipe become lower with decreasing distance to the header, and flow rates from nozzle are also reduced with decreasing distance to the header. The uniformity of jet flows from nozzles becomes stable significantly when the ratio of summative area of nozzles to each sectional area of the branch pipe is below 0.5.
Keywords
Selective catalytic reduction; Ammonia injection; Air distribution manifold; Computational fluid dynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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