In this work, nitrogen adsorption behavior on zeolite 13X bed issimulated. Desorption and adsorption dynamics of zeolite 13X wasinvestigated in order to study the behavior of this zeolite. Thesimulation results showed that the high Roll-up Phenomena occurs foroxygen than nitrogen. There is a large mass transfer zone (MTZ) forzeolite 13X. Therefore, the adsorption rate of zeolite 13X is high. Themain drop of nitrogen concentration in the outlet of zeolite 13X occursat the time of about 125 ...