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Darcy의 법칙을 사용한 새로운 압착 이론: 고액분리 통합이론
New Expression Theory Based on Darcy’s Equation: Unified Theory on Solid-Liquid Separation
인하대학교 환경공학과, 402-701 인천시 남구 용현동 253
Department of Environmental Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Inchon 402-751, Korea
HWAHAK KONGHAK, August 2003, 41(4), 471-478(8), NONE
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Abstract
본 연구에서는 Darcy의 법칙이 여과 케이크의 압착에 사용될 수 있다는 가정으로 새로운 압착 경계조건을 사용하여 압착속도, 압력분포의 변화, 공간율의 변화를 계산하였다. 이 이론적인 계산 방법은 이미 케이크 여과와 간섭침전에 이용된 것으로 '고액분리 통합이론'이라 이름지었다. 매우 압축성인 케이크 압착의 계산 결과를 실제 압착 실험과 비교한 결과 잘 일치하였다. 또한 유채 씨앗의 기름 압착 과정에 대해 본 이론을 적용하여 보았다.
The Darcy’s equation is applied to the expression of a filter cake, with new boundary condition and new constitutive equation. The expression procedure, the variation of pressure distribution in a cake, and that of porosity distribution in the cake were calculated based on the conception named ‘unified theory on solid-liquid separation’, which had been already used in ‘cake filtration’ and ‘hindered sedimentation’. The experimental expression results using a very compressible cake agreed with the theoretically calculated results well. And this theoretical method was also applied to the expression of oil from rape seed.
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References
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Tiller FM, Green TC, AIChE J., 19(6), 1266 (1973)
Tiller FM, Leu W, "Cake Compressibility-Critical Element in Solid-Liquid Separation," World Filtration Congress III, 270-279 (1982)
Shirato M, Murase T, Fukaya S, Kato S, Kagaku Kogaku, 31(11), 1125 (1967)
Tergaghi K, "Theoretical Solid Mechanics," Wiley (1951)
Yim SS, Kim JH, Korean J. Chem. Eng., 17(4), 393 (2000)
Yim SS, Oh HY, Kwon YD, J. Korean Solid Wastes Eng. Soc., 12(5), 475 (1995)
Darcy HPH, "Les Fontaines Publiques de la Ville de Dijon," Victor Dalmont, Paris (1856)
Ruth BF, Ind. Eng. Chem., 38(6), 564 (1946)
Tiller FM, Chem. Eng. Prog., 51(6), 282 (1955)
Yim SS, Song YM, Kwon YD, Korean J. Chem. Eng., 20(2), 334 (2003)
Shirato M, Kato H, Kobyashi K, Sakazaki H, J. Chem. Eng. Jpn., 3(1), 98 (1970)
Tiller FM, Crump JR, "Solid-Liquid Separation: An Overciew," CEP., October, 65-75 (1977)
Shirato M, Murase T, Hayashi N, "Expression Theory and Its Practical Utilization," World Filtration Congree III, 280-287 (1982)
Yim SS, Song YM, Jun SJ, HWAHAK KONGHAK, 40(3), 330 (2002)
Tiller FM, Green TC, AIChE J., 19(6), 1266 (1973)
Tiller FM, Leu W, "Cake Compressibility-Critical Element in Solid-Liquid Separation," World Filtration Congress III, 270-279 (1982)
