Premium
Pressure swing adsorption. Part II: Experimental study of a nonlinear trace component isothermal system
Author(s) -
Hassan M. M.,
Raghavan N. S.,
Ruthven D. M.,
Boniface H. A.
Publication year - 1985
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690311210
Subject(s) - pressure swing adsorption , mass transfer , isothermal process , thermodynamics , nonlinear system , diffusion , adsorption , langmuir , molecular sieve , chemistry , component (thermodynamics) , helium , refrigeration , mechanics , chromatography , physics , organic chemistry , quantum mechanics
The recently developed mathematical model for simulation of a PSA system (Raghavan et al., 1985) has been extended to a nonlinear Langmuir equilibrium system. The pressure swing adsorption separation of a small concentration of ethylene from helium has been studied experimentally on 4A and 5A molecular sieves. In the 4A system mass transfer is controlled by intracrystalline diffusion and is slow, whereas in the 5A system mass transfer is very much faster and is controlled by macropore diffusion. With rate and equilibrium parameters derived from experimental breakthrough curves, the theoretical model provides a good representation of the experimentally observed behavior of both PSA systems.