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HWAHAK KONGHAK,
Vol.34, No.4, 407-412, 1996
Vol.34, No.4, 407-412, 1996
반응증류를 위한 체단탑의 수력학적 특성에 관한 연구
A Study on the Hydraulic Characteristics of a Sieve Tray Column for the Reactive Distillation
직경이 20cm이고 자유 면적비가 8.2%인 체단탑의 특성을 공기-물계에서 고찰하였다. 수력학적 특성으로는 체단의 건조 압력강하와 전체 압력강하, 그리고 체단위의 dynamic head와 froth height를 측정하였으며 실험 결과로부터 aeration factor를 계산하였다. 또한 반응증류 모사탑으로써 체단위에서의 액체 체류시간분포를 측정하였으며 성능 향상을 위한 개량된 체단탑을 제안하여 기존의 체단탑과 비교,고찰하였다. 그 결과, 개량된 체단탑에서는 기존의 체단탑에 비하여 체단 위에서의 액체 체류시간이 약 40% 정도 증가하였다.
The characteristics of a sieve tray having the 20 cm diameter and 8.2% free area were studied in an air-water system. Hydrodynamics such as dry pressure drops, total pressure drops, dynamic heads and froth heights on the sieve tray were carried out. Aeration factors were estimated from the experimental results obtained from this work. In addition, the residence time distributions of liquid on the sieve tray as a simulated reactive distillation column were measured and compared with those of the modified sieve tray combined a meshed chamber for an improvement of the performance. As a result, mean residence times on the combined sieve tray are about 40% higher than those on the conventional sieve tray.
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