Modeling Ozone Contacting Process in a Rotating Packed Bed

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• 作者：Y. H. Chen ; C. Y. Chang ; W. L. Su ; C. C. Chen ; C. Y. Chiu ; Y. H. Yu ; P. C. Chiang ; and Sally I. M. Chiang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2004
• 出版时间：January 7, 2004
• 年：2004
• 卷：43
• 期：1
• 页码：228 - 236
• 全文大小：151K
• 年卷期：v.43,no.1(January 7, 2004)
• ISSN：1520-5045

文摘

The process of the ozone dissolution with decomposition in a rotating packed bed (RPB) is studiedfor model establishment. The RPB, which provides a high gravitational force by adjusting therotational speed, is taken as a novel ozone contactor because of its high mass-transfer coefficient.It has a high potential to improve the ozonation performance or reduce the ozone contactorvolume by applying RPBs. The objective of this study is to investigate and model the dynamicozone dissolution process with decomposition in a RPB with oxygen mass transfer. In addition,the empirical correlations between the system parameters (including liquid holdup, liquid filmthickness, specific area of the gas-liquid interface a, and mass-transfer coefficient ournals/iecred/43/i01/eqn/ie030545ce10001.gif">) andoperating conditions are presented. Furthermore, the variations of gas and liquid ozoneconcentration profiles are predicted to illustrate the dynamic behavior of mass transfer in aRPB. The validity of the model is demonstrated by comparing the predicted results withexperimental data, indicating good agreement. As a result, the present model is useful andreferable for the proper description of ozone contacting in a RPB system.