When the humid air flows directly through the desiccant, its moisture will be absorbed by the desiccant。The ability of the dryer to adsorb water is limited, and the desiccant adsorbs water It must be dried or regenerated before it can continue to absorb water。To this end, cope with fillingThe desiccant drying tower is depressed-operated so that the desiccant is forcibly separated from the adsorbed water。The specific process varies depending on the type of dryer:

The non-thermal adsorption dryer completely uses compressed air as the desorption medium。

The micro-thermal adsorption dryer uses an external heater, and the compressed air is heated as a desorption medium。

1. Drying process

When the wet compressed air flows through the desiccant from the bottom up, the desiccant absorbs the air moisture from the bottom up (1)。

2. Regeneration process

Non-thermal adsorption dryer:

The dry air from the drying tower outlet flows through the desiccant and desiccant through expansion and decompression to atmospheric pressure, so that the desiccant and the adsorbed water are forcibly separated (2)(4)。

After disattaching, the vent valve is closed and the tower chamber is restored to pressurized state。

3, micro-thermal adsorption dryer

The dry compressed air is expanded through the orifice plate (4) and fed into the external heater (5)。 The heated hot air flows through the saturated desiccant (2), forcing the desiccant to separate from its adsorbed water from top to bottom。

4、转换

After the desiccant regeneration is completed, the two drying towers perform functional conversion (3)。

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