흡착조작내에서 분말활성탄 슬러리 혼합의 최적조건을 산출하기 위하여 비교적 고농도 활성탄슬러리에 대한 혼합특성을 연구하였다. 사용된 장치는 흡착제인 분말상 활성탄이 기포유입으로 교반되는 내부순환형 혼합조이며 실험결과 슬러리 혼합속도는 기체유입량이 증가할수록 증진되었고 활성탄 유입량이 증가할수록 감소하였으나 기체유입속도가 0.04-0.06m/s에서는 활성탄농도가 증가되면 오히려 혼합속도가 증진됨을 알 수 있었다. 이러한 경향을 기체체류량과 활성탄슬러리속도를 산출하여 분석한 결과 액상내 활성탄입자가 초래하는 기포합체에 의한 슬러리속도 증진에 따른 현상임을 알 수 있었으며 높은 혼합속도를 갖는 활성탄농도와 기체유입속도의 조건을 제시할 수 있었다.

The mixing characteristics of powdered activated carbon slurry of relatively high concentration was studied to find the optimal mixing condition in an adsorption column with bubble-agitation. System adopted was an activated carbon slurry column with internal looping where the mixing of adsorbents are conducted by gas input. From th experiment, it was found that the mixing rate increased with gas input and decreased with increasing activated carbon content, but the mixing rate increased with increasing activated carbon concentration at the superficial gas velocity of 0.04-0.06m/s. From the analysis of gas holdup and the calculated slurry velocity, this tendency could be explained by the enhanced slurry fluidization due to coalescence of bubbles and the condition of high mixing with activated carbon concentration and input gas velocity could be suggested.

Slurry Mixing Rate Activated Carbon

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