Numerical study on the design of urea decomposition chamber in LP SCR system
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In order to design efficient Urea Decomposition Chamber (UDC) for the Low Pressure (LP) Selective Catalytic Reduction (SCR) system, numerical simulations were conducted with respect to various design parameters. The design parameters examined in this simulation include the chamber diameter, inlet and outlet shape of chamber, and urea injection point. Reaction kinetics for the urea decomposition was proposed and validated with the experimental data in the range of 300~450oC. The effects of design parameters on the performance of UDC were evaluated by the calculated urea conversion and pressure drop. As a result, the local optimum design values were derived by the parametric study.
Abstract
In order to design efficient Urea Decomposition Chamber (UDC) for the Low Pressure (LP) Selective Catalytic Reduction (SCR) system, numerical simulations were conducted with respect to various design parameters. The design parameters examined in this simulation include the chamber diameter, inlet and outlet shape of chamber, and urea injection point. Reaction kinetics for the urea decomposition was proposed and validated with the experimental data in the range of 300~450oC. The effects of design parameters on the performance of UDC were evaluated by the calculated urea conversion and pressure drop. As a result, the local optimum design values were derived by the parametric study.
참고문헌 (12)
- Birkhold, F., "Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOxsystems", Appl. Catal, 70, pp.119~127 (2007)
- 최철영, "Numerical analysis of NOx reduction for compact design in marine urea-SCR system", International Journal of Naval Architecture and Ocean Engineering, 7(6), pp.1020~1033 (2015), 대한조선학회
- Cooper, D. A., "Exhaust emissions from high speed passenger ferries", Atmos. Environ, 35(24), pp.4189~4200 (2001)
- Kim, J. Y., "Numerical Prediction on the characteristics of spray-Induced mixing thermal decomposition of urea solution in SCR system", ASME 2004 Internal Combustion Engine Division Fall Technical Conference, pp.165~170 (2004)
- Koebel, M., "Urea-SCR : a promising technique to reduce NOX emissions from automotive diesel engines", Catal. Today, 59(3), pp.335~345 (2000)
- Magnusson, M., "The influence of sulfur dioxide and water on the performance of a marine SCR catalyst", Appl. Catal. B Environ, 111-112, pp.20~26 (2012)
- Mahalik, K., "Kinetic Studies on hydrolysis of urea in a semi batch reactor at atmospheric pressure for safe use of ammonia in a power plant for flue gas conditioning", J. Hazard Mater, 175, pp.629~637 (2010)
- 박태화, "Effect of static mixer geometry on flow mixing and pressure drop in marine SCR applications", International Journal of Naval Architecture and Ocean Engineering, 6(1), pp.27~38 (2014), 대한조선학회
- Sahu, J. N., "Equilibrium and kinetic studies on the hydrolysis of urea for ammonia generation in a semibatch reactor", Ind. Eng. Chem. Res, 47, pp.4689~4696 (2008)
- Strom, H., "Choice of urea-spray models in CFD simulations of urea-SCR systems", Chem. Eng. J, 150, pp.69~82 (2009)
- Wu, B., "Optimization of an urea decomposition chamber using CFD and VR", Appl. Therm. Eng, 70, pp.827~837 (2014)
- Yim, S. D., "Decomposition of urea into NH3 for the SCR process", Ind. Eng. Chem. Res, 43(16), pp.4856~4863 (2004)