Dehumidification performances of two materials on packed bed

Experiments the dehumidification performances of 4A molecular sieve and activated alumina. The results show that the regeneration performances of 4A molecular sieve are superior to activated alumina when the air rate is 3 638 m³/h and the air temperature is 55 ℃ and the humidity ratio is 5 g/kg. In the absorption process, for the inlet air of 25.8 ℃ and 20.05 g/kg with air rate of 3 638 m³/h, the two materials show less difference in dehumidification performances at the beginning of the adsorption process while activated alumina dehumidification rate is 3.5 times that of 4A molecular sieve in stable adsorption process. Therefore, the activated alumina is more suitable for the packed bed on the above conditions.