The non heat regeneration dryer does not transfer heat from the outside during regeneration, but adopts the PSA (Pressure Swing Absorption) principle. The regenerated dry air required for this type of dryer accounts for 12-16% of its processing capacity. Regenerated dry air should be reduced to atmospheric pressure to achieve lower relative humidity.

The micro heat regeneration dryer uses the principle of variable temperature adsorption (TSA) for adsorbent regeneration, and the regeneration conditions are superior to those of the non heat regeneration dryer. Heating can desorb the water vapor on the inner surface of the adsorbent, enabling it to achieve deep adsorption. Therefore, the dynamic adsorption capacity of the adsorbent in a hot regeneration dryer is much larger than that in a non hot regeneration dryer.

As the name suggests, the regeneration temperature of a micro heat regeneration dryer is slightly lower than that of an externally heated regeneration dryer. However, the understanding of micro heat regeneration varies among different dryer manufacturers. There are significant differences in parameters such as regeneration temperature, working cycle, and adsorbent filling amount.