Development of Unified Correlations for Volumetric Mass-Transfer Coefficient and Effective Interfacial Area in Bubble Column Reactors for Various Gas−Liquid Systems Using Support Vector Regressi

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• 作者：Ankit B. Gandhi ; Prashant P. Gupta ; Jyeshtharaj B. Joshi ; Valadi K. Jayaraman ; Bhaskar D. Kulkarni
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2009
• 出版时间：May 6, 2009
• 年：2009
• 卷：48
• 期：9
• 页码：4216-4236
• 全文大小：630K
• 年卷期：v.48,no.9(May 6, 2009)
• ISSN：1520-5045

文摘

The objective of this study was to develop a unified correlation for the volumetric mass-transfer coefficient (kb>Lb>a) and effective interfacial area (a) in bubble columns for various gas−liquid systems using support vector regression (SVR-) based modeling technique. From the data published in the open literature, 1600 data points from 27 open sources spanning the years 1965−2007 for kb>Lb>a and 1330 data points from 28 open sources spanning the years 1968−2007 for a were collected. Generalized SVR-based models were developed for the relationship between kb>Lb>a (and a) and each design and operating parameters such as column and sparger geometry, gas−liquid physical properties, operating temperature, pressure, superficial gas velocity, and so on. Further, these models for kb>Lb>a and a are available online at b/UICT-NCL" class="extLink">http://www.esnips.com/web/UICT-NCL. The proposed generalized SVR-based correlations for kb>Lb>a and a have prediction accuracies of 99.08% and 98.6% and average absolute relative errors (AAREs) of 7.12% and 5.01%, respectively. Also, the SVR-based correlation provided much improved predictions compared to those obtained using empirical correlations from the literature.