The general process flow of the compressed air station is: air compressor-pre-air storage tank-pre-filter-dryer-post-filter-post-air storage tank-compressed air pipe network.

Because the optimum regeneration temperature of the adsorbent is above 130°C, and the regeneration effect drops sharply when it is lower than 100°C, the temperature of the compressed air entering the dryer should not be lower than 110°C. This makes it impossible to set up a pre-filter before the dryer, so the oil content of the air entering the dryer must be controlled at a low level. Only centrifugal air compressors and oil-free screw machines can meet this requirement.

When the heat-of-compression regenerative dryer is used as the post-processing equipment, the process flow of the air compressor station is changed to: air compressor - dryer - post filter - post air storage tank - compressed air pipe network.

Whether the dew point of the compressed air treated by the dryer can meet the requirements depends on the type and filling capacity of the adsorbent from the equipment level; from the operation level, it depends on whether the regeneration of the adsorbent is complete.

The desorption speed of activated alumina is fast, the regeneration process of the adsorbent is short, and the switching period of the double tower is short, but the adsorption capacity is not as good as that of molecular sieve. Therefore, when the pressure dew point temperature is -40 °C, the adsorption tower can only be filled with activated alumina as the adsorbent. When the pressure dew point is required to reach -70°C, a certain amount of molecular sieve must be filled.

The operating conditions of the dryer will affect the heating process of the adsorbent. Because all the high-temperature compressed air at the outlet of the compressor enters the regeneration tower to heat the adsorbent, the flow and temperature of the incoming compressed air will affect the heating time. The compressed air flow entering the dryer is affected by the air compressor discharge volume and the hydraulic characteristics of the compressed air pipe network between the air compressor and the dryer; the compressed air temperature entering the dryer is affected by the air compressor exhaust temperature and equipment and pipes. The net is related to external heat exchange.