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RISS 인기검색어
- 검색키워드
- 저자 : Basheer Ashraf Ali (검색결과 1 건)
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Effect of baffle configuration on performance of batch stirred vessel
Basheer Ashraf Ali,Lister Herington Falleiro 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.5
Crystallization is often carried out in batch stirred vessels. However, it is difficult to obtain uniform crystalsize distribution (CSD), as it strongly depends on prevailing flow field operating conditions. This is adversely affectedby the geometry of stirred vessels. Hence in this work, CFD simulations were performed to investigate flow field, mixingand crystallization phenomena in a stirred vessel. The performance of the stirred vessel was compared with drafttube baffled stirred vessel. The flow field was quantified through liquid circulation and vorticity. The mixing was analyzedthrough macromixing time in the stirred vessel. The solubility data, nucleation, and growth kinetics were integratedwith CFD through a user-defined function (UDF) to predict crystallization phenomena. The predicted resultswere validated with experimental data available in the literature. The effects of seed mass, size and temperature on CSDwere investigated and optimum conditions [750 gm (seed mass); 500 m (seed size); 308 K (temperature)] for favourablecrystal growth were identified. The performance of the proposed baffled stirred vessel was found to be significant,and it supports enhancing flow field, mixing and crystallization process.
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