A kinetic study of the adsorption and desorption process of two commercial molecular sieves

✍ Scribed by Kenneth Werling; Roland Wimmerstedt

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 409 KB
• Volume: 35
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(80)85015-9

✦ Synopsis

A mathematical model and ds numerical solution IS presented to descnbe adiabatic adsorption-desorptlon processes m a fixed bed when the mass and heat transfer can be described by external film transfer coeficlents only, wluch 1s especially mterestmg m the case of non-umform. uregular parWes A new method to measure such rates IS presented, based on contmuous welghmg of a throughcnculated bed The measured rates can be checked agamst the ddference m humldrty and temperature between the outlet and inlet au m order to minimize errors

The comparison between expenmental results and calculations showed that the adsorption process m a bed of molecular sieve pellets can not be descnbd with a constant mass transfer coefficient, the desorptlon process IS better described although not entmzly satlsfactonly

In the case of a honeycomb molecular sieve, a constant mass transfer coefficient described both the adsorption and desorptlon processes satisfactorily