한국입자에어로졸학회지 (Particle and aerosol research)

  • 제17권2호
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  • Pages.21-27
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  • 2021
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  • 1738-8716(pISSN)
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  • 2287-8130(eISSN)
한국입자에어로졸학회 (Korean Association for Particle and Aerosol Research)
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내부식성과 경량성 향상을 위한 비금속 재질 집진판의 2단 전기집진기 집진효율 연구

The study on collection efficiency of two-stage electrostatic precipitator using non-metallic electrode for improve corrosion resistance and light weight

  • 안소희 (환경시스템연구본부, 한국기계연구원) ;
  • 이예완 (환경시스템연구본부, 한국기계연구원) ;
  • 김예슬 (환경시스템연구본부, 한국기계연구원) ;
  • 김용진 (환경시스템연구본부, 한국기계연구원) ;
  • 한방우 (환경시스템연구본부, 한국기계연구원) ;
  • 김학준 (환경시스템연구본부, 한국기계연구원)
  • An, So-Hee (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM)) ;
  • Lee, Yeawan (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM)) ;
  • Kim, Ye-Sle (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM)) ;
  • Kim, Yong-Jin (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM)) ;
  • Han, Bangwoo (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM)) ;
  • Kim, Hak-Joon (Environmental System Research Division, Korea Institute of Machinery & Materials (KIMM))
  • 투고 : 2021.03.29
  • 심사 : 2021.06.01
  • 발행 : 2021.06.30
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초록

We developed non-metallic electrodes that can replace metallic electrodes of the electrostatic precipitator(ESP) for the purpose of light weight, corrosion resistance, cost reduction. We manufactured three types of collection electrodes made of stainless steel (M), Carbon ink coating layer-Plastic sheet-Carbon ink coating layer (CPC), and Plastic sheet-Carbon ink coating layer-Plastic sheet (PCP). We studied the collection efficiency of a two-stage ESP using oil mist particles with and without collection stage by changing the flow rate, the material of collection electrode, and the applied voltage of the pre-charger module and the collection module. Here we measured concentrations of particles at diameters of 0.45 ㎛ (CMD; count median diameter) and 3.0 ㎛ (MMD : mass median diameter), as well as PM2.5 and PM10. As a result of the experiment, two-stage ESP had 22~25% higher collection efficiency in PM2.5 than one-stage ESP at the same applied voltage. The difference in collection efficiency by varying the materials of collection electrodes was less than 5%. The weight of the non-metallic electrode was only one eighth the weight of the metal electrode. CPC electrode had a thickness of 0.27 mm, which was 1.5 times thinner than a thickness of PCP electrode, so when the flow rate increased, the CPC electrodes couldn't be kept at equal intervals due to the fluttering unlike PCP electrodes. In addition, the PCP-CPC collection module of the present experiment followed the theoretical efficiency based on Deutsch equation and Cochet's charging theory.

키워드

과제정보

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20181110200170, Core Technology Development of Removal of Acid Gas and Fine Particle for Coal Thermal Power Plant).

참고문헌

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