What are the working principles of the two models of the zero-air-consumption regenerative adsorption dryers?
Heatless regenerative adsorption dryer There are two types of regenerative adsorption dryers: water-cooled and air-cooled.
Water-cooled Blower Principle:
1. When a heatless dryer is selected, the regeneration tower residual heat is used together with a water-cooled heat exchanger to lower the temperature. After the thermal cycle, a series of valves are opened or closed to form a closed cooling loop for the blower;
2. The hot air from the regeneration tower bypasses the heater and is cooled by the water-cooled heat exchanger;
3. The cooled air is sucked in by the fan and sent to the regeneration tower;
4. The cooled air passes through the regeneration tower, which absorbs heat from the tower, and then returns to the water-cooled heat exchanger for cooling. It circulates in such a closed loop until the temperature of the regeneration tower drops to the operating point.
Air-cooled Blower Principle:
1. Wet compressed air is controlled by a butterfly valve and delivered to the bottom of the adsorption tank;
2. The compressed air passes through the adsorption tank to dehumidify the air, reducing its dew point temperature to below -40℃;
3. The dry compressed air flows out from the top of the adsorption tank, passes through a check valve, and flows to the point of use;
4. The regeneration tower adsorption is saturated. In order to regenerate it, the pressure in the tank is first reduced, and the pressure in the regeneration tower is released to atmospheric pressure by opening the pressure relief valve at the bottom of the tower, and the noise generated is eliminated through a silencer;
5. After the regeneration tower pressure drops to atmospheric pressure, the centrifugal fan draws air from the environment, compresses it, and sends it to the heater. The air discharged by the blower enters the heater, and the heated compressed air is used to heat the adsorbent and desorb it to achieve regeneration;
6. When the hot regeneration air flows through the regeneration tower, water molecules evaporate from the surface of the desiccant and enter the airflow;
7. The hot regeneration air exits to the atmosphere through the butterfly valve and outlet
8. At the end of the thermal regeneration cycle, there is still a large amount of heat in the regeneration tower. Part of the gas in the dry outlet air flows into the regeneration tower through a control valve to cool the regeneration tower, and the cooled gas is discharged into the atmosphere;
9. After cooling and pressurizing the regeneration tower, it runs simultaneously with the adsorption tower for 10 minutes. During this period, wet compressed air passes directly through both towers, thereby reducing or eliminating peak dew point temperatures and maintaining dew point stability. After running simultaneously for 10 minutes, the machine enters the next cycle.
Heatless regenerative adsorption dryer In a stable state, energy conservation and emission reduction has become a development trend. The obvious reason is to manage the environment and conserve natural resources, which is of course one reason. The main reason is to eliminate unorganized enterprises that are dirty, messy, and poorly managed, providing a healthier environment for the transformation and upgrading of all enterprises.
Energy saving has become a development trend in the compressed air industry. The main problems in the use of compressed air are waste, high electricity consumption, and substandard compressed air quality. Substandard compressed air quality causes many problems, including excessive water and impurities, which can lead to damage to pneumatic equipment, pipeline corrosion, gas leaks, and contamination of raw materials. Therefore, the important issue with substandard compressed air is the water content problem, which cannot be solved without a heatless adsorption dryer. In these two huge market gaps, energy-saving air compressors and Heatless regenerative adsorption dryer the market has been driven.
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