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HWAHAK KONGHAK,
Vol.28, No.3, 327-333, 1990
Vol.28, No.3, 327-333, 1990
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-
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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