(395bd) HCl Adsorption and Desorption Breakthrough Behaviors of Molecular Sieve 13X in a Fixed Bed Reactor

In this study, adsorption and desorption behaviors of the hydrogen chloride mixture (balance with nitrogen) using commercial sorbents (Molecular Sieve 13X) was studied with varying the flow rate, the concentration, the temperature and the pressure in a fixed bed reactor (15 cm tall bed with 0.5 cm I.d.).

As results, adsorption capacity of HCl was not affected by the inlet flow rate (0.5 l/min ~ 2.0 l/min) and the inlet concentration (200 ppm ~ 650 ppm). At 30°C ~ 90°C of the temperature ranges and 1 bar ~ 20 bar of the pressure ranges, the HCl sorption capacity decreases with increasing temperature, whereas it increases with increasing pressure. Since the MS-13X shows a physisorption behaviors for HCl removal, sorbent regeneration was possible. Cyclic operations with adsorption and desorption steps were also studied. On the basis of this result, such as the sorbent regeneration and the re-adsorption, we will develop thermal swing adsorption (TSA) process.