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논문 기본 정보

자료유형
학술저널
저자정보
박성진 (부산대학교) 정용현 (부경대학교) 김운원 (인제대학교) 박제성 (부산대학교) 서정민 (부산대학교)
저널정보
한국환경과학회 한국환경과학회지 한국환경과학회지 제34권 제1호
발행연도
2025.1
수록면
1 - 8 (8page)
DOI
10.5322/JESI.2025.34.1.1

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초록· 키워드

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The purpose of this study is to predict the air jet projection distance in pulse air jet bag filter using numercial analysis techniques. Based on experimental data using pilot equipment and coke dust from a P steel mill, this study calculated the resistance coefficient of the filter bag and predicted the air jet projection distance based on various parameters such as filtration velocity, pulsing pressure, inlet dust concentration, filter aspect ratio, and injection nozzle diameter using the commercial CFD program CFD-ACE+ V2024.0(Applied Materials, Inc, USA), aiming to provide information necessary for the design and operation of bag filter systems in the future. Results are as follows: Based on the simulation results according to the inlet dust concentration, it was found that optimal pulsing is achievable with the nozzle diameter of 10 mm and pulsing pressure of 5 bar or higher, with the air jet projection distance ratio of 0.75 or higher for low concentrations (0.5 ~ 1.0 g/m³). For high concentrations (2.0 ~ 3.0 g/m³), the pulsing pressure of over 7 bar is required; however, to extend the filter lifespan, it is deemed appropriate to reduce the pulsing pressure by lowering the filtration velocity to less than 1.5 m/min or designing the nozzle diameter of 12 mm or larger. Simulation results based on the filter aspect ratio suggest that, for low concentrations (0.5 ~ 1.0 g/m³) with a nozzle diameter of 10 mm and a filtration velocity of 1.5 m/min, design is feasible with a maximum filter aspect ratio of 20 at 5 bar and up to 22.5 at 6 bar. Furthermore, increasing the nozzle diameter by 12 mm or reducing the filtration velocity to 1.0 m/min could potentially allow design with a maximum ratio of 25. For high concentrations (2.0 ~ 3.0 g/m³), with a nozzle diameter of 12 mm and a filtration velocity of 1.0 m/min, design is feasible with a maximum ratio of 20 at 5 bar and up to 22.5 at 6 bar.

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Abstract
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
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