The refrigeration dryer mainly uses the refrigerant to exchange heat with the compressed air to reduce the temperature of the compressed air to the dew point temperature in the range of 2 to 10 °C, so that the water content in the compressed air tends to be supersaturated, so as to remove the moisture in the compressed air and reduce the temperature of the compressed air. Guarantee the stability of production.
According to the principle of pressure swing adsorption and regeneration cycle, the compressed air is adsorbed and dried by external (electric heating) micro-heating regeneration method. This product combines the advantages of heatless regeneration and heat regeneration dryer, and uses external micro-heating to reduce the loss of regeneration gas volume, and also avoids the disadvantage of large power consumption of heat regeneration dryer.
Using the pressure swing adsorption regeneration cycle, the compressed air is exchanged through the two drying cylinders (towers) filled with adsorbents A and B, that is, when one cylinder (tower) absorbs water vapor under high partial pressure (working pressure), the other A drying cylinder (tower) is decomposed under low partial pressure (accepting atmospheric pressure), and then switched according to the set time program.
According to the principle of air freeze drying (cooling and condensation), the humid hot compressed air is cooled to a certain dew point temperature (saturation temperature) by refrigeration equipment, and then the corresponding moisture is precipitated. Liquid water is drained through an automatic drain, allowing the compressed air to achieve the desired drying dew point.
The main function of the freeze dryer is to remove the moisture in the compressed air and ensure the stability of production. It is necessary to configure compressed air purification equipment (also called air compressor post-processing equipment) to purify the impurities in the compressed air, and the freeze dryer is the equipment used to remove water. There are two types of air compressor dryers commonly used in the market, freeze dryer (referred to as cold dryer) and adsorption dryer (referred to as suction dryer).
The cold dryer is based on the principle of freezing and dehumidification. The compressed air is forced to pass through the evaporator for heat exchange to cool down, so that the gaseous water and oil in the compressed air are cooled by isobaric pressure, condensed into liquid water and oil, and entrained with dust. The automatic drain drains the system out of the system to obtain clean compressed air.
The compressed air entering the dryer first enters the heat exchanger for cooling, and the moisture and oil in the preliminarily cooled compressed air are discharged through the separator. Then the air enters the evaporator, which further cools the air to 2-5 degrees Celsius, so that the air contains gaseous moisture, and the oil is further precipitated due to the decrease in temperature, and is discharged through the separator. The cooled air then enters the heat exchanger to heat the output.
In the process of compressed air cooling, the function of the cooler is to cool the input gaseous refrigerator to make it liquid, then filter the refrigerant, dry it and send it to the capillary or automatic expansion valve, so that the refrigerant becomes low temperature and low pressure. The liquid is output to the evaporator. When the refrigerant enters the evaporator to cool the air, it absorbs the heat of the compressed air and converts it into a gaseous state, and then is compressed by the compressor and then enters the evaporator, repeating the above heat exchange process.
Manufacturers often use freeze dryers and suction dryers to dry the moisture on the surface of objects. Refrigeration dryer is the abbreviation of refrigerated dryer. It uses refrigerant to exchange heat with compressed air, and reduces the temperature of the compressed air to a dew point temperature in the range of 2 to 10 °C. According to the cooling method of the condenser, the dryer can be divided into two types: air-cooled type and water-cooled type; according to the intake temperature, there are high temperature intake type (below 80℃) and normal temperature intake type (about 45℃); according to the working pressure There are ordinary type (0.3-1.0MPa) and medium and high pressure type (above 1.2MPa).
The function of the cold dryer is to remove the moisture in the air in the pipeline. The characteristic is that it can only reach the dew point of 2-10 degrees Celsius. In terms of temperature, this is the limit value it can reach, because its structure uses refrigerant to cool, and if it is too cold, it is easy to freeze. That’s right, adsorption is the best, can achieve a negative pressure dew point, and works well in cooler environments.
The quality of the air will seriously affect our health, so we need to find ways to improve the quality of the air. Refrigeration dryer is a good helper for air purification. In compressing air, refrigeration dryer is undoubtedly the most ideal purification equipment. It has many advantages such as low energy consumption, light weight, small size, stable operation, maintenance and Easy maintenance, etc.
