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논문 기본 정보

자료유형
학술저널
저자정보
조승연 (호서대학교) 김태희 장인성 홍웅기 (호서대학교) 이준호 (호서대학교)
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대한전기학회 전기학회논문지 전기학회논문지 제66권 제7호
발행연도
2017.7
수록면
1,066 - 1,071 (6page)

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초록· 키워드

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Recently high voltage impulse (HVI) technique has been extensively studied for desalting processes to control the CaCO₃ scale formation in industrial water practices such as power plant, boiler, and heat exchange operations. Investigation of the operational parameters for the HVI is important, however, those had not been reported yet. In this study, the effect of initial feed volume and contact time on reduction of calcium ion concentration by the HVI technique was investigated. Initial feed volumes of artificial hard water which contained 100 mg/L of Ca<SUP>2+</SUP>, were set to 1, 2, and 3 L respectively. After 24hr of HVI contact with 12kV, Ca<SUP>2+</SUP> ion was reduced to 50, 29 and 19 % of their initial concentration, indicating that calcium removal increased as initial feed volume decreased. This implies the applied HVI pulse energy per unit mass of calcium is important parameter determining overall desalting efficiency. A series of extended operations of HVI up to 30 days verified the long term stability of the HVI system. The calcium ion declined to 40 mg/L after 2~3 days, and further reduction of calcium was not achieved, indicating that optimum operation time could be 2~3 days under these experimental conditions. Consequently, it was confirmed that the important operational parameter of HVI technique is initial feed volume and contact time as well as the applied voltage that was already proven in the previous study.

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Abstract
1. 서론
2. 실험장치와 방법
3. 결과와 검토
4. 결론
References

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