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액-액 교반조에서 동력소모량과 액적크기
A Study on Power Consumption and Drop Size in Liquid-Liquid Agitating Vessel
HWAHAK KONGHAK, April 1987, 25(2), 135-141(7), NONE
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Abstract
방해판이 설치된 교반조에서 MIBK-water, i-amylalcohol-water, n-hexane-water, toluene-water계를 사용하여 체류량이 큰 상태에서 동력소모량과 액적크기를 측정하였다.
각 계의 동력소모량에 대한 체류량 및 계의 특성에 따른 무차원 상관관계식을 다음과 같이 제시하고 이 식에서 계산한 값과 실측치를 비교검토하였다.
PL/Po = 3.38（1-0.53ρc/ρd）Nwe-0.38Φ-0.9
액적크기는 사진촬영법으로 측정하였다. 액적크기에 대한 체류량의 영향은 직선적인 관계를 보였고, Weber 수와의 관계는 다음식으로 표시할 수 있었다.
D32/L = C（1+BΦ）Nwe-0.51
각 계의 동력소모량에 대한 체류량 및 계의 특성에 따른 무차원 상관관계식을 다음과 같이 제시하고 이 식에서 계산한 값과 실측치를 비교검토하였다.
PL/Po = 3.38（1-0.53ρc/ρd）Nwe-0.38Φ-0.9
액적크기는 사진촬영법으로 측정하였다. 액적크기에 대한 체류량의 영향은 직선적인 관계를 보였고, Weber 수와의 관계는 다음식으로 표시할 수 있었다.
D32/L = C（1+BΦ）Nwe-0.51
An experimental study was carried out to investigate the dynamic characteristics of a power consumption and drop size in the liquid-agitating vessel with 4-baffle plates for the MIBK-water, iso-amylalcohol-water, n-hexane-water, and toluene-water system.
The power consumption for each system was measured for each experimental variables. A dimensionless correlation for the power consumption was determined in relationship to the physical properties of the system, the hold-up, and the Weber number as follows:
PL/Po = 3.38（1-0.53ρc/ρd）Nwe-0.38Φ-0.9 for Φ=0.2-0.5, Nwe=40-1,300
The drop size was measured by the photographing method. The effect of hold-up on drop size was linear, and the relationship of the drop size to the hold-up and the Weber number was as follows:
D32/L = C（1+BΦ）Nwe-0.51
For the MIBK-water, iso-amylalcohol-water, and n-hexane-water system, the constant C was 0.03 and B was 9.3. For toluene-water system, these were 0.073 and 4.8, respectively.
The power consumption for each system was measured for each experimental variables. A dimensionless correlation for the power consumption was determined in relationship to the physical properties of the system, the hold-up, and the Weber number as follows:
PL/Po = 3.38（1-0.53ρc/ρd）Nwe-0.38Φ-0.9 for Φ=0.2-0.5, Nwe=40-1,300
The drop size was measured by the photographing method. The effect of hold-up on drop size was linear, and the relationship of the drop size to the hold-up and the Weber number was as follows:
D32/L = C（1+BΦ）Nwe-0.51
For the MIBK-water, iso-amylalcohol-water, and n-hexane-water system, the constant C was 0.03 and B was 9.3. For toluene-water system, these were 0.073 and 4.8, respectively.
