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RISS 인기검색어
- 검색키워드
- 저자 : Renzo Di Felice (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Numerical simulation of CO2 diffusion and reaction into aqueous solutions of different absorbents
Antonio Comite,Camilla Costa,Renzo Di Felice,Paolo Pagliai,Dario Vitiello 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.2
A numerical model comprising a system of partial differential equations was set up to describe the diffusionand reaction of carbon dioxide into aqueous solutions of different absorbents. The solution of the governing equationwas a function of the physical and chemical parameters involved, such as Henry constant, diffusion coefficientsand reaction rates. Although these parameters have been estimated and reported in literature, uncertainty still existsabout their reliability. Comparison between numerical predictions and experimental values from specifically designedexperiments 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.
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Potential of different additives to improve performance of potassium carbonate for CO2 absorption
Rouzbeh Ramezani,Saeed Mazinani,Renzo Di Felice 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.10
The performance of potassium carbonate (K2CO3) solution promoted by three amines, potassium alaninate (K-Ala), potassium serinate (K-Ser) and aminoethylethanolamine (AEEA), in terms of heat of absorption, absorption capacity and rate was studied experimentally. The experiments were performed using a batch reactor, and the results were compared to pure monoethanolamine (MEA) and K2CO3 solutions. The heat of absorption of K2CO3+additive solution was calculated using the Gibbs-Helmholtz equation. In addition, a correlation for prediction of CO2 loading was presented. The results indicated that absorption heat, absorption rate and loading capacity of CO2 increase as the concentration of additive increases. The blend solutions have higher CO2 loading capacity and absorption rate when compared to pure K2CO3. The heat of CO2 absorption for K2CO3+additive solutions was found to be lower than that of the pure MEA. Among the additives, AEEA showed the highest CO2 absorption capacity and absorption rate with K2CO3. In conclusion, the K2CO3+AEEA solution with high absorption performance can be a potential solvent to replace the existing amines for CO2 absorption.
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