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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 22, Number 5
JKCSEZ 22(5)
October 20, 1978 

Effect of Contact Time on the Determination of Mass Transfer Coefficient and Interfacital Area with Sulfite-System

Sulfite-System 을 가지고 물질전달계수와 상계면적을 측정하는데 접촉시간의 영향
Bosung Rhee, Seungkon Ryu, Haeyeong Kim

이보성, 유승곤, 김혜영
화학반응을 기체흡착반응기의 설계에 가장 중요한 기액계면간의 물질전달계수와 면적을 측정하는데 자주 모델반응이 이용된다. 본연구는 그 중에서 wetted wall column 에 sulfite-system을 dldydgkdu 특별히 기액간의 접촉시간이 기체흡착속도에 미치는 영향을 연구 검토하였다. 반응속도가 매우 빠르거나 늦으면 column의 길이에 따라서, 다시 말하면 접촉시간에 따라서 기체흡착속도에 차이가 크다는 것을 발견했다. 반응속도항수 k2 = 5.5 × 106m3 / kmol·s근처에서는 이 차이가 없어진다. 환언하면 이런 조건하에서 장치의 hydrodynamics가 기체흡착속도에 무관해진다. 금속 column 대신에 graphite column을 사용할 수 있다는 예증을 제시하였다.

Model reactions were often applied in the measuring of the mass transfer coefficient and interfacial area between gas and liquid, which are the most important factors in the design of equipment for gas absorption accompanied with chemical reaction this study, wetted wall column was applied to the sulfite-system among the known model reactions. It was found that one could not ignore the effect of contact time on the determination of mass transfer coefficient and interfacial area. When the reaction rate is very high or very low, the differences of absorption rate would be very large in according to the length of column, that is to the contact time. But the effect of contact time was free about the rate constant k2 = 5.5 × 106m3 / kmol·s, that means the rate of gas absorption become independent upon the hydrodynamics of the equipment. It has shown that instead of steel column could be applied the fine grain-graphite column.

340 - 355
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