석탄화력 발전소 탈질 시스템의 암모니아 분사 제어에 의한 성능 개선에 관한 전산 해석COMPUTATIONAL ANALYSIS OF PERFORMANCE IMPROVEMENT BY CONTROL OF AMMONIA INJECTION IN DeNOx SYSTEM OF COAL-FIRED POWER PLANT
- Other Titles
- COMPUTATIONAL ANALYSIS OF PERFORMANCE IMPROVEMENT BY CONTROL OF AMMONIA INJECTION IN DeNOx SYSTEM OF COAL-FIRED POWER PLANT
- Authors
- 김민규; 정희택
- Issue Date
- 2020
- Publisher
- 한국전산유체공학회
- Keywords
- 탈질(Denitrification); 선택적 촉매 환원(Selective catalytic reduction); 몰 비(Molar Ratio); 암모니아 분사 노즐(Ammonia injection nozzle); 배기가스(Flue gas); 유동 제어(Flow control)
- Citation
- 한국전산유체공학회지, v.25, no.2, pp 91 - 97
- Pages
- 7
- Indexed
- KCI
- Journal Title
- 한국전산유체공학회지
- Volume
- 25
- Number
- 2
- Start Page
- 91
- End Page
- 97
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/7731
- ISSN
- 1598-6071
- Abstract
- The present study is aiming at the application of CFD methods to the control of the ammonia injection nozzles to improve the performance of the denitrification process. The application model was simplified to the two-dimensional array adopted from the existing SCR process in the large-scaled coal-fired power plant. The commercial software named as ANSYS-Fluent was used to solve the steady viscous flow fields with Design Xplorer as the optimization tools to control frow rate of ammonia injection nozzles. Four types of inlet flue gas pattern have been chosen as the simulation parameters. The root mean square of NH3/NO molar ratio at the inlet of the catalyst layer has been improved 7.2 to 86.1 % by controlling the flow rate of the ammonia injection nozzles. From the present numerical simulation, the operation guide could be drawn for the ammonia injection nozzles in SCR DeNox facilities.
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