초임계 이산화탄소를 이용한 스와프로부터 연마유 탈착 특성

양준열; 이윤우; 임종성; Jun Youl Yang; Youn-Woo Lee; Jong Sung Lim

Clean Technology, Vol.10, No.3, 139-148, September, 2004

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초임계 이산화탄소를 이용한 스와프로부터 연마유 탈착 특성

Desorption Characteristics of Grinding Oil from Swarf by using Supercritical Carbon Dioxide

양준열, 이윤우 ¹, 임종성 ^{2, †}

한국과학기술연구원 청정기술연구센터, 우)136-791 서울시 성북구 하월곡동 39-1
¹서울대학교 공과대학 응용화학부, 우)151-742 서울시 관악구 신림9동 산 56-1
²서강대학교 공과대학 화공생명공학과, 우)121-742 서울시 마포구 신수동 1

Jun Youl Yang, Youn-Woo Lee¹, and Jong Sung Lim^{2, †}

Clean Technology Research Center, Korea Institute Science and Technology, 39-1 Hawolgok-dong, Sungbuk-gu,Seoul 136-791, Korea
¹School of Chemical Engineering, Seoul National University, San 56-1 Sillim-dong, Gwanak-gu, Seoul 151-742, Korea
²Dept. of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong, Mapo-gu, Seoul121-742, Korea

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초록

스와프는 철강 제조 공정 중에 발생되는 금속 부산물로서 연마유의 함량이 10%이상 되므로 국내에서 지정폐기물로 분류된다. 연마유가 함유된 스와프를 재활용하기 위하여 초임계 이산화탄소를 이용하여 재생하였고, 온도(313.15K-323.15K), 압력(10MPa-30MPa)의 실험 조건이 연마유 추출 효율에 미치는 영향을 살펴보았다. 초임계 이산화탄소의 압력이 높을수록 높은 추출 효율을 보였고, 같은 압력을 기준으로 하였을 때는 온도가 높을수록 빠른 시간 내에 추출 공정이 완료됨을 확인하였다. 본 실험에서는 선형 탈착 kinetics가정의 단일 매개 변수 모델을 사용하여 재생 효율을 예측하였고, 이는 실험 결과와 비교적 잘 일치하였다.

The recovery of stainless steel fiber by removing cutting oil from grinding swarf, which is classified as specified wastes, was investigated. Swarf loaded with grinding oil was regenerated by supercritical carbon dioxide. And, the effects of temperature(313.15K-323.15K), pressure(10MPa-30MPa) on regeneration efficiency were studied. Regeneration effiency was increased as the pressure was incerased. Also, at the same pressure, the experiments at higher temperature were more efficient for regeneration. The experiment results was predicted by applying a one-parameter mathematical model assuming linear desorption kinetics. The predicted value showed good agreement with experimental data.

Keywords:swarf;supercritical carbon dioxide;desorption kinetics;one-parameter mathematical model

[References]

Hong F, Michael A, J. Hazard. Mater., B67, 197 (1999)
Mchugh MA, Krukonis VJ, Supercritical Fluid Extraction - Principles and Practice, 2nd edn, Butterworth-Heinemann, Stoneham, MA (1994)
Taylor LT, Supercritical Fluid Extraction, John Wiley and Sons, New York, NY (1996)
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Song MS, Lee YW, Kim JD, Row KH, HWAHAK KONGHAK, 41(2), 207 (2003)
Kim YH, Lim JS, Lee YW, Lee CH, HWAHAK KONGHAK, 41(1), 58 (2003)
Gomez AM, de la Ossa EM, Chem. Eng. J., 88(1-3), 103 (2002)
Bravi M, Bubbico R, Manna F, Verdone N, Chem. Eng. Sci., 57(14), 2753 (2002)
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Frese E, US Patent. No. 4,440,642 (1984)
Fu H, Waste Manage., 18, 321 (1998)
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Defilippi RP, "Supercritical Fluid Regeneration of Activated Carbon for Adsorption of Pesticides", EPA Report, Washington D.C. (1980)
Tan C, Liou D, Ind. Eng. Chem. Res., 27, 988 (1988)
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Recasens F, AIChE J., 35, 951 (1989)
Srinivasan M, Mccoy B, Chem. Eng. Sci., 45, 1885 (1990)

[Related Articles]

[1] Hong F, Michael A, J. Hazard. Mater., B67, 197 (1999)

[2] Mchugh MA, Krukonis VJ, Supercritical Fluid Extraction - Principles and Practice, 2nd edn, Butterworth-Heinemann, Stoneham, MA (1994)

[3] Taylor LT, Supercritical Fluid Extraction, John Wiley and Sons, New York, NY (1996)

[4] Stauffer TC, J. Appl. Polym. Sci., 81, 1107 (2001)

[5] Brady BO, Ind. Eng. Chem. Res., 26, 261 (1987)

[6] Song MS, Lee YW, Kim JD, Row KH, HWAHAK KONGHAK, 41(2), 207 (2003)

[7] Kim YH, Lim JS, Lee YW, Lee CH, HWAHAK KONGHAK, 41(1), 58 (2003)

[8] Gomez AM, de la Ossa EM, Chem. Eng. J., 88(1-3), 103 (2002)

[9] Bravi M, Bubbico R, Manna F, Verdone N, Chem. Eng. Sci., 57(14), 2753 (2002)

[10] Carman L, US Patent, No. 4,097,306 (1978)

[11] Frese E, US Patent. No. 4,440,642 (1984)

[12] Fu H, Waste Manage., 18, 321 (1998)

[13] Kim YH, J. KPMI, 10(1), 6 (2003)

[14] Defilippi RP, "Supercritical Fluid Regeneration of Activated Carbon for Adsorption of Pesticides", EPA Report, Washington D.C. (1980)

[15] Tan C, Liou D, Ind. Eng. Chem. Res., 27, 988 (1988)

[16] Kothandaraman S, Environ. Prog., 11, 220 (1992)

[17] Recasens F, AIChE J., 35, 951 (1989)

[18] Srinivasan M, Mccoy B, Chem. Eng. Sci., 45, 1885 (1990)