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CMSMPR결정화기의 시동특성 연구(II) -체재시간분포(RTD) 모델에 의한 해법-

A Start-up Dynamic Study in CMSMPR Crystallizers(II) -Solution by Residence Time Distribution(RTD) Model-

HWAHAK KONGHAK, February 1987, 25(1), 19-26(8), NONE
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Abstract

지금까지 CMSMPR결정화기의 동특성 해석에는 보통 Population Balance모델이 사용되어 왔으나 결정의 성장속도가 결정크기함수로 나타나는 결정화계에서는 이 Population Balance 모델에 의한 동특성 해석이 상당히 어렵게 되는 단점을 지니게 된다. 이러한 이유때문에 지금까지 발표된 많은 연구들이 결정화기의 동특성 해석시 결정 성장속도를 결정크기 비의존형으로 취급하여 왔다.
본 연구에서는 결정 성장속도가 결정크기함수로 나타나는 계에서도 쉽게 적용할 수 있는 RTD(체재시간분포) 모델을 채택, 그 해석법을 발전시켰으며 결정크기 비의존형 성장속도를 Populatior Balance모델에 적용 계산된 결과치와 비교한 바 RTD모델의 우수성을 확인하였다.
The crystal size distribution in continuous mixed suspension mixed product removal(CMSMPR) crystallizers is conveniently analyzed by the population balance model as shown in part I of this study. This model, however, presents difficulties when the growth rate is dependent on crystal size. Most of recent studies indicate the importance of this dependence.
In this part, as an alternative approach, a method based on residence time distribution was extensively investigated. This method is applicable when not only the growth rate is size dependent but also solid mixing is imperfect. Experimental data shown in part I was reanalyzed and showed improvements.

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