| Title |
A Study for Optimal Design of the AIG to Improve the Performance of DeNOx Facilities Installed in Combined Cycle Plant |
| Authors |
김광추(Kwang Chu Kim) ; 박만흥(Man Heung Park) ; 윤준규(Kyu-Yoon Jun) ; 임종한(Jong-Han Lim) |
| Keywords |
암모니아 주입 그리드 ; 탈질설비 ; 전산유체역학 해석 ; 최적설계 Ammonia injection grid ; DeNOx facilities ; CFD analysis ; Optimal design |
| 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 in-stallation. 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. |