Bd. Crittenden et al., PRESSURE, CONCENTRATION AND TEMPERATURE PROFILES IN A 5A ZEOLITE ADSORBENT BED DURING PRESSURIZATION AND DEPRESSURIZATION WITH AIR, Chemical Engineering Science, 50(9), 1995, pp. 1417-1428
Experimentally measured pressure, temperature and composition profiles
for air admitted to and exhausted from a bed of 5A zeolite are compar
ed with the corresponding profiles simulated by an electrical analogue
representation of a non-isothermal model of the system. While pressur
e and composition profiles are in good agreement, the experimentally m
easured temperature profiles are some 8 to 10 degrees C lower than sim
ulated on pressurisation and 8 to 10 degrees C higher on depressurisat
ion. Simulations comparing differing model assumptions show that there
are slight differences between results when fluid and solid temperatu
res are taken to be identical and results when a difference between fl
uid and solid temperatures is assumed. Greater differences are apparen
t in simulations when the system is regarded as adiabatic and when the
column wall is assumed to be at a constant temperature. The experimen
tal results reflect a non-adiabatic system more closely than an adiaba
tic one.