Desert Dry Desiccant

Molecular Sieves retain their ability to absorb water molecules over a much wider spectrum of temperatures than other desiccant materials. Molecular Sieves also have a much higher equilibrium capacity for water vapor under very low humidity conditions. Molecular Sieves are very effective in reducing the water vapor content of gases in the parts per million range.

Molecular Sieve Desiccant: Type 4A

Molecular Sieve Type 4A is the sodium form of Zeolite. Type 4A is typically used in regenerable drying systems to remove water vapor or contaminants which have a smaller critical diameter than 4 angstroms. With a smaller pore size, Type 4A is less subject to contamination; however, the moisture absorption rate will be less than that of Type 13X.

Molecular Sieve Desiccant: Type 13X

Molecular Sieve Type 13X is a modified form of the sodium Zeolite with a pore diameter of 10 angstroms. Type 13X is used commercially for general gas drying, air plant feed purification (simultaneous removal of H2 O and CO2 ) and liquid hydrocarbon and natural gas sweetening (H2 S and mercaptan removal). The larger pore size allows for faster absorption of moisture; however, it is more subject to contamination.