Diffusion and reaction in ideal multicomponent systems: I. Tubular reactor near equilibrium

✍ Scribed by R. L. Solomon; J. L. Hudson

• Publisher: American Institute of Chemical Engineers
• Year: 1971
• Tongue: English
• Weight: 712 KB
• Volume: 17
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690170225

✦ Synopsis

Abstract

Diffusion and either surface or gas‐phase reaction in a ternary ideal gas mixture in steady fully developed laminar flow in a tube is considered. The linearized equations valid near equilibrium and under isothermal conditions are solved. Concentration profiles predicted using a multicomponent diffusivity matrix are compared to those predicted using more approximate diffusivities. Local overshoots past equilibrium occur, but oscillations (with axial position) are not possible. A simplified diffusivity expression is found which predicts cup‐mixing mole fractions in good agreement with those predicted using the multicomponent diffusivities.