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molecular sieve Desiccant Dryers working principle

Mar. 25, 2021

The molecular sieve Desiccant  Dryers are used for drying air in Storage Tanks or pneumatic systems and are beneficial in the drying of hygroscopic (water-absorbing) resins. These Dryers remove water from the air by passing it through a molecular sieve Desiccant  that absorbs moisture. The term "molecular sieve Desiccant  dryer" refers to a broad class of dryers. Other terms commonly used are Regenerative molecular sieve Desiccant  Dryers and Twin Tower Dryers, and to a lesser extent Absorption Dryers.

The compressed air is passed through a pressure vessel filled with an absorbent media such as activated alumina, silica gel, molecular sieve or other molecular sieve Desiccant  material. The molecular sieve Desiccant  can bring the dew point of the water vapor in the air down to −40 °C (−40 °F) or below. This means that the air will not condense (deposition) water until it is cooled to −40 °C (−40 °F). In practice, two cylinders with molecular sieve Desiccant  are used; one is drying the air, while the other vessel is being regenerated. The switching of the vessels and the regeneration sequence is typically done automatically via solenoid operated valves The regeneration of the molecular sieve Desiccant  vessel can be during three different methods.

Heatless Dryers, which uses part of the dry compressed air coming from the other vessel to dry the molecular sieve Desiccant  in the vessel being regenerated at lower pressure. Heated Dryers, which uses a hot air blower, so there is no loss of compressed air. Heat of compression, which can only be used with an oil free compressor.

"Note:This is normal specification, in case of a particular application, specification or requirement, please contact us by email at for technical information."



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