[논문]전기역학적 스크린을 이용한 집진판 표면 위 입자 세정성능 연구

조윤희; 신동호; 김영훈; 박인용; 김상복; 이건희; 한방우

doi:10.11629/jpaar.2023.19.3.063

전기역학적 스크린을 이용한 집진판 표면 위 입자 세정성능 연구
A study on cleaning performance of particles on collection plates using an electrodynamic screen 원문보기

Particle and aerosol research = 한국입자에어로졸학회지, v.19 no.3, 2023년, pp.63 - 76

조윤희 (한국기계연구원 지속가능환경연구실) , 신동호 (한국기계연구원 지속가능환경연구실) , 김영훈 (한국기계연구원 지속가능환경연구실) , 박인용 (한국기계연구원 지속가능환경연구실) , 김상복 (한국기계연구원 지속가능환경연구실) , 이건희 (한국기계연구원 지속가능환경연구실) , 한방우 (한국기계연구원 지속가능환경연구실)

Abstract ▼ AI-Helper

An electrostatic precipitator (ESP) has a low pressure drop and a high collection efficiency but its collection efficiency can be reduced due to dust accumulation on the collection plates during long-term operations. In order to maintain the initial dust collection efficiency, it is necessary to periodically clean the collection plates. The common cleaning methods are using physical impacts or water sprays. These cleaning methods can lead to damage to the collection plate or generate wastewater. Herein, we implemented an electrodynamic screen (EDS) for ESP cleaning and evaluated its surface cleaning performance of particles. The EDS is an electrostatic system that can electrostatically repel particles on surfaces, allowing it to clean the ESP without causing damage and wastewater generation. Our evaluation included the analysis of the effects of AC voltage characteristics, electrode configuration and environmental conditions on the cleaning performance of the EDS with the aim of achieving effective surface cleaning. It has been demonstrated that activating the EDS cleans up to 65% of the particles on the surface, which indicates about 94% of our target cleaning zone.

주제어

표/그림 (8)

그림 Figure 1. Cleaning of electrostatic precipitator (ESP) using electrodynamic screen (EDS)
그림 Figure 2. EDS configuration. (a) EDS film and (b) EDS operation based on applied AC voltage
표 Table 1. Factors of affecting EDB cleaning efficiency
그림 Figure 3. Cleaning efficiency according to (a) electric field strength, (b) frequency, (c) waveform and (d) phase difference (width: 0.5 mm, gap: 2 mm, RH 70%, 17 g/m²)
그림 Figure 4. Cleaning efficiency according to (a) electrode gap and (b) electrode width (2 kV/mm, 1 Hz, square wave, phase difference: 180°, RH 70%, 17 g/m²)
그림 Figure 5. Finite-element method modeling of EDS (a) coulomb forces acting on particles on a surface, (b) dielectrophoresis (DEP) force, (C) X-axis component of net force and (d) Y-axis component of net force (width: 0.5 mm, gap: 2 mm, 2 kV/mm, d = 1 ㎛, ρ = 2600 kg/m³, charge number(Z) = 200)
그림 Figure 6. Cleaning efficiency according to (a) relative humidity and (b) surface lading of dust (2 kV/mm, 1 Hz, square wave, phase difference: 180°, width: 0.5 mm, gap: 2 mm)
그림 Figure 7. Cleaning efficiency according to (a) frequency at varying relative humidity and (b) cleaning time on relative humidity of 80% (2 kV/mm, 1 Hz, square wave, phase difference: 180°, width: 0.5 mm, gap: 2 mm, 17 g/m²)

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