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용매 추출계에서 단일액적으로부터의 물질 전달
Mass Transfer from Single Drop in Slovent Extraction
HWAHAK KONGHAK, June 1981, 19(3), 159-168(10), NONE
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Abstract
n-octanol-인산-물의 삼성분계에서 분산상의 인산 액적이 연속상의 n-octanol속을 낙하하면서 물질이동이 일어날 때, 액적의 운동 양상과 계의 물리적 특성이 물질이동계수에 미치는 영향을 조사하였다. 종말속도는 인산 농도가 증가할수록 물질이동이 없는 계에서 도출된 Klee와 Treybal식과 큰 차이를 나타내었다. 계의 특성에 의해 저농도에서 연속상의 물질이동계수에 관한 무차원 해석의 결과 다음식을 얻었다.
Shc =0.26Rec1.13Scc0.6
고농도의 경우 위의 식을 이용하여 분산상의 물질이동계수를 구하여 비교한 결과, 침투 이론에 의한 값과 대체로 일치함을 보였다.
Shc =0.26Rec1.13Scc0.6
고농도의 경우 위의 식을 이용하여 분산상의 물질이동계수를 구하여 비교한 결과, 침투 이론에 의한 값과 대체로 일치함을 보였다.
The mass transfer of phosphoric acid from a single water drop falling in a continunous phase of n-octanool and the related drop dynamics were studied experimentally. For the drops of low acid concentration the terminal velocity agreed well with the prediction of Klee and Treybal. But its deviation was increased with the increase in acid concentrtion. The mass transfer coefficient in the continuous phase was well represented by
Also it was found that the dispersed phase coefficient for the drops of high concentration is favorably predicted by the model based on the penetration theory.
Also it was found that the dispersed phase coefficient for the drops of high concentration is favorably predicted by the model based on the penetration theory.