Molecular sieve type 3A adsorbed 19-20 % w/w and type 4A could adsorb 20-21 % w/w. Molecular sieve 5A pellets or beads can adsorb 21-22 % w/w whereas 13X type can adsorb 23-24 % w/w.
It is important to reactivate the molecular sieves before use. The molecular sieve can be regenerated in the following ways:
Regeneration through thermal activation at the temperature ranging from 175 to 315 °C.
Pressure change process.
By using a carrier gas and conducting the heating and purging process.
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