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슬러리에 CO2 기체의 흡수(II)-카올린과 백카본 슬러리의 층류막에 CO2의 물질전달-
Absorption of CO2 into Slurries(II)-Mass Transfer of CO2 Gas into Laminar Falling Films of Slurries of Kaolin and White Carbon-
HWAHAK KONGHAK, June 1990, 28(3), 327-333(7), NONE
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Abstract
Power-law 거동을 나타내는 비뉴톤 액체의 층류막에 기체 흡수실험을 행하였다. 층류막에 흡수된 기체용질에 대한 대류-확산방정식의 해를 변수분리형으로 얻었으며, 평균 Sherwood 수를 Graetz수와 비뉴튼 액체의 power-law index의 함수로 나타내었다. CO2 기체의 흡수속도를 젖은 벽탑을 사용하여 kaolin과 white carbon slurry의 층류막에서 측정하였으며, 이론치와 비교하였다. Beek-Bakker model을 사용하여 물질전달속도에 대한 근사해를 얻어 실험치와 비교하였다.
Absorption of CO2 gas into laminar falling films of kaolin and white carbon slurries by using a wetted-wall column was studied theoretically and experimentally at 25℃ and I atm. The convective-diffusion equation was solved by sparation of variables and the analytical solution for the average Sherwood number was obtained as a function of the Graetz number and the power-law index of the slurries. An approximate solution for the rate of mass transfer could be also obtained by using the Beek-Bakker model. The experi-mental results were in good agreement with the theoretical predictions.
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Yih SM, Huang PG, Chem. Eng. Sci., 36, 387 (1981)
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Danckwerts PV, Ind. Eng. Chem., 43, 1450 (1951)
Mashelkar RA, Soylu MA, Chem. Eng. Sci., 29, 1089 (1974)
Mashelkar RA, Soylu MA, J. Appl. Polym. Sci., 27, 698 (1982)
Mashelkar RA, AIChE J., 30, 353 (1984)
Hikita H, Ishimi K, Hara M, Matsunami T, Can. J. Chem. Eng., 62, 352 (1984)
Lee SJ, Lee WK, Korean J. Chem. Eng., 1(1), 51 (1984)
Park SW, Han SB, Kim SS, Park TY, HWAHAK KONGHAK, 26(3), 280 (1988)
Roten Z, Neilson JE, Can. J. Chem. Eng., 47, 341 (1969)
Kim SS, Ph.D. Dissertation, Pusan National University (1989)
Park SW, Kim SS, Kim JH, HWAHAK KONGHAK, 28(1), 52 (1990)
Higbie R, AIChE J., 31, 365 (1935)
Beek WJ, Bakker CAP, Appl. Sci. Res., A10, 241 (1961)
Byers CH, King CJ, AIChE J., 13, 628 (1967)
Hatanaka J, Chem. Eng. J., 28, 127 (1989)
Asai S, Hatanaka J, Kimura T, Yoshizawa H, Ind. Eng. Chem. Res., 26, 483 (1987)
