탈질 시스템의 성능 예측에서의 유입 배기가스의 형태 영향에 대한 CFD 해석

• Published in: 한국전산유체공학회지 Vol. 29; no. 1; pp. 18 - 29
• Main Authors: 김민규(M.K. Kim), 정희택(H.T. Chung)
• Format: Journal Article
• Language: Korean
• Published: 한국전산유체공학회 01.03.2024
• Subjects: 기계공학; 압력 손실(Pressure loss); 몰 비(Molar ratio); 편차(Deviation); 탈질(Denitrification); 전산 해석(Computational analysis); 유동 균일성(Flow uniformity); 성능(Performance)
• ISSN: 1598-6071; 1598-6071
• DOI: 10.6112/kscfe.2024.29.1.018

In the present study, the effect of the flow pattern of the inlet flue gas were investigated onthe denutrification performance through the numerical simulation. As the examples of theoff-design conditions, the skewed and double parabolic flow were chosen to compare theuniform flow used as the design condition. The SCR type of DeNOx facilities of thelarge-scaled coal-fired power plant currently in operation were adopted as the applicationmodel. In order to to deduce three performance variables, the steady two-dimensionalturbulent flow were solved using the thermal-flow software named as ANSYS-Fluent. Comparing the off-design conditions to the design condition, the computational resultsshowed that the predicted performances differed by 15.6% for the flow uniformity, 127%for NH /NO molar ratio of the mixed gas and 10.2% for the pressure loss of the wholeprocess. KCI Citation Count: 1