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A Study for Optimal Design of the AIG to Improve the Performance of DeNOx Facilities Installed in Combined Cycle Plant  

Kim, Kwang-Chu (Korea Power Engineering Company Inc.)
Park, Man-Heung (Korea Power Engineering Company Inc.)
Yoon, Jun-Kyu (Department of Mechanical & Automotive Engineering, Kyungwon University)
Lim, Jong-Han (Department of Mechanical & Automotive Engineering, Kyungwon University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.19, no.12, 2007 , pp. 811-820 More about this Journal
Abstract
A Study on the optimal design of the AIG(Ammonia Injection Grid) to improve the performance of DeNOx facilities in the HRSG(Heat Recovery Steam Generator) was performed using the CFD analysis. On the basis of the flow analysis results in the case that the AIG in the HRSG was not installed, the numerical analyses according to the positions of AIG, injection angles of nozzle and the control of ammonia injection quantity were carried out. The standard deviation according to factors was calculated for quantitative comparison. As the results, the AIG in the HRSG should be installed in the position that the uniform flow field shows through the exact flow analysis in the previous of the AIG design and installation. In the case the AIG has already been installed and non uniform flow distribution shows, it is recommended that flow correction device or KoNOx catalyst should be used. Otherwise, the control of ammonia injection angle or the ammonia injection quantity using the velocity profile analysis is demanded to accomplish the optimal performance.
Keywords
Ammonia injection grid; DeNOx facilities; CFD analysis; Optimal design;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 NIER, 1998, Air pollutant emission data
2 Ministry of Environment, 2007, ME Bulletin 2007-229
3 Freek, K., Lydia, S., Nico, J. J. D. and Jacob, A. M., 1993, Kinetics of the selective catalyst reduction of NO with $NH_3$ over $Mn_{2}O_{3}$-$WO_3$/$Al_{2}O_{3}$, Ind. Eng. Chem. Res 445
4 Jiri, S., Natale, F., Pio, F., Enrico, T. and Fiorenzo, B., 1993, Selective reduction of $NO_x$ by $NH_3$ over honeycomb deNOxing calalysts, Ind. Eng. Chem. Res. 1053
5 WILCOX, D. C, 1983, Turbulence Modeling for CFD, La Canada, CA: DCW Industries, Inc
6 Kevin, R., Mel, A. and Michael, V., Numerical modeling for design optimization of SCR applications, ICAC NOx Forum Washington D.C
7 Bae, J. H, Kim, K. C., Park, M. H., Park, K. S. and Lee, J. W., 2000, A Study on a uniformity of flow field in a duct cooler of FGD system, SAREK J., Vol. 12, No. 2, pp. 120-130   과학기술학회마을
8 Hong, S. H., 2005, KoNOx catalyst tech no-logy for LNG combined cycle plant, News & Information for Chemical Engineers, Vol. 23, No.4, 404-409
9 Kenneth, J. F. and John, H. C., 1993, Design guidelines for $NH_3$ injection grids; Optimize SCR NOx removal. Oil Gas J. 48
10 Adams, B., Crener, M., Valentine, J., Bhamidipati, V., Letcavits, J., O'Connor, D. and Vierstra, S., 2002, Use of CFD modeling for desing of NOx reduction systems in utility boilers, Proceeding of the 2002 International Joint Power Generation Conference, ASME, Phoenix, AZ
11 Byrne, J., Chen, J. and Speronello, B., 1992, Selective catalytic reduction of NOx using zeolites for high temperature applications, Catal. Today Vol. 13, No.1, pp.33-42   DOI   ScienceOn
12 Sayre, A. and Milobowski, M., Validation of numerical models of flow through SCR units, EPRI-DOE-EPA Combined Utility Air Pollutant Control Symposium, Washington D.C
13 Ralf, S., Cindy, K. and Edward, H., 2003, Enhance ammonia distribution for maximum SCR performance, Inst. Clean Air Compo Forum 2003
14 Cobb, D., Glatch, L., Ruud, J. and Snyder, S., 1991, Application of selective catalytic reduction (SCR) technology for NOx reduction from refinery combustion sources, Environ. Prog., Vol. 10, No.1, pp. 49-59   DOI
15 Patankar, S. V., Numerical Heat Transfer and Fluid Flow, Hemisphere
16 Gutberlet, H. and Schallert, B., 1993, Selective catalytic reduction of NO from coal fired plants, Catal. Today, No. 16, pp.207-236   DOI   ScienceOn
17 KOPEC, www.konox.co.kr
18 Kevin, R., Milobowski, M. and Wooldridge, B., 1999, Perspectives on ammonia injection and gaseous static mDung in SCR retrofit applications, In EPRI-DOE-EPA Combined Utility Air Pollutant Control Symposium, Washington, DC