HWAHAK KONGHAK, Vol.26, No.3, 314-322, June, 1988
디스크형 망사 충전탑에서의 반응흡수 특성
Absorption of CO2 in a Screen-Disc Packing Column
초록
망사 충전물상에서의 물질전달과 유효접촉계면 특성을 파악하기 위하여 동일형태의 망사 디스크 충전탑과 매끈한 금속 디스크 충전탑을 설치하고, 차아염소산소다 촉매를 함유한 탄산칼륨-중탄산칼륨 완충용액과 탄산가스와의 1차 반응흡수계에서 습윤속도 변화에 따른 탄산가스 흡수량을 측정하였다. 그리고 충전물상에서의 액체혼합정도와 액체 체류량관계를 알기 위하여 추적자 순간주입기법에 의해 체류시간분포를 측정하였다.
액체 습윤속도가 증가함에 따라 액측물질전달계수, 유효접촉계면 및 액체체류량은 증가하였고, 유효접촉계면은 액체체류량의 영향을 받았으며, 그리고 망사 충전물상의 액체체류량과 액체 혼합도는 금속 충전물의 것보다 각각 1.8배 및 1.5배 크게 나타났다.
액체 습윤속도가 증가함에 따라 액측물질전달계수, 유효접촉계면 및 액체체류량은 증가하였고, 유효접촉계면은 액체체류량의 영향을 받았으며, 그리고 망사 충전물상의 액체체류량과 액체 혼합도는 금속 충전물의 것보다 각각 1.8배 및 1.5배 크게 나타났다.
The absorption of carbon dioxide accompanied by first order reaction into potassium carbonate-bicarbonate buffer solutions, containing sodium hypochlorite as the catalyst, was used to evaluate liquid film mass transfer coefficients and effective interfacial areas in a screen（60 mesh） disc packing column and a smoothed face metallic disc packing columm, respectively. The residence time distributions using a tracer pulse input-response technique were measured to find the extent of mixing of liquid on the disc packings.
It was found that liquid film mass transfer coefficients, effective interfacial areas and the holdup of liquid for both packings increased with increase of liquid wetting rate, that the effective interfacial areas depended on the holdup of liquid, and that the holdup of liquid and the extent of liquid mixing on the screen disc packing increased 1.8 and 1.5 times as high as that on the metallic disc packing, respectively.
It was found that liquid film mass transfer coefficients, effective interfacial areas and the holdup of liquid for both packings increased with increase of liquid wetting rate, that the effective interfacial areas depended on the holdup of liquid, and that the holdup of liquid and the extent of liquid mixing on the screen disc packing increased 1.8 and 1.5 times as high as that on the metallic disc packing, respectively.