Numerical simulation of CO2 diffusion and reaction into aqueous solutions of different absorbents

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• 作者：Antonio Comite (1)
  Camilla Costa (1)
  Renzo Di Felice (2)
  Paolo Pagliai (2)
  Dario Vitiello (2)
  
  1. Dipartimento di Chimica e Chimica Industriale ; Universit脿 degli Studi di Genova ; Via Dodecaneso ; 31 ; Genova ; 16146 ; Italy
  2. Dipartimento di Ingegneria Civile Chimica ed Ambientale ; Universit脿 degli Studi di Genova ; Via Opera Pia ; 15 ; Genova ; 16145 ; Italy
  
• 关键词：CO2 Capture ; Reaction ; Diffusion ; Henry Constant ; Modeling ; Membrane
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：32
• 期：2
• 页码：239-247
• 全文大小：620 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220

文摘

A numerical model comprising a system of partial differential equations was set up to describe the diffusion and reaction of carbon dioxide into aqueous solutions of different absorbents. The solution of the governing equation was a function of the physical and chemical parameters involved, such as Henry constant, diffusion coefficients and reaction rates. Although these parameters have been estimated and reported in literature, uncertainty still exists about their reliability. Comparison between numerical predictions and experimental values from specifically designed experiments shows them to be in good agreement, thus increasing the confidence on the correctness of these parameters, which form then the basis for a proper design of industrial units.