Gas absorption accompanied by a two-step chemical reaction

✍ Scribed by P.L.T. Brian; M.C. Beaverstock

• Publisher: Elsevier Science
• Year: 1965
• Tongue: English
• Weight: 798 KB
• Volume: 20
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(65)80043-4

✦ Synopsis

Film and penetration theory solutions are presented for gas absorption accompanied by a two-step chemical reaction involving a transient intermediate species. For the case of equal diffusivities, the two theories agree with each other within 6 per cent. When the intermediate species is relatively long-lived, $, the factor by which the chemical reaction enhances the absorption rate, goes through a maximum as liquid phase contact time increases, and 46 approaches its ultimate asymptote from above. This unique behaviour is not found in gas absorption accompanied by a single chemical reaction, but aspects of this interesting behaviour have been observed in published experimental data for the carbon dioxide-monoethanolamine system and for the chlorine-ferrous chloride system.