Gas-liquid mass transfer in trickle-bed reactors: Gas-side mass transfer

✍ Scribed by Dr. Ing. Ion Iliuta; Dr. Ing. Maria C. Iliuta; Prof. Dr. Fernand C. Thyrion

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 540 KB
• Volume: 20
• Category: Article
• ISSN: 0930-7516
• DOI: 10.1002/ceat.270200904

✦ Synopsis

Abstract

New data of gas‐liquid mass transfer for cocurrent downflow through packed beds of non‐porous particles are presented. Mass transfer parameters for air/carbon dioxide/water and air/carbon dioxide/sodium hydroxide systems were evaluated by least squares fit of the calculated CO~2~ concentration profiles in the gas phase to the experimental values. The dependence of k~G~a on gas and liquid flow rates is caused by the dependence of gas‐liquid interfacial area, not by the gas‐side mass transfer coefficient k~G~. In the case of the absorption of dilute carbon dioxide the gas‐side resistance is considerably smaller than the liquid‐side resistance. In the pulse flow regime, gas‐liquid interfacial area calculated from k~L~a and k~L~ values obtained by physical, respectively, chemical absorption are lower than the gas‐liquid interfacial area evaluated from the measurements under reaction conditions.