• 2024/8/29 9:04:18

The difference between frozen dryer and adsorption dryer and how to choose?

In air compression, if the water of the compressed air is not removed, the equipment will rust and thus affect the service life. There are two common dehumidification equipment in the compressed gas system: frozen dryer and adsorption dryer, there are significant differences , so what are the differences between them and how to choose, we carry out the following analysis.

1. the working principle

Frozen dryer: Based on the principle of refrigeration dehumidification, through the heat exchange with the refrigerant, the upstream saturated compressed air is cooled to a certain dew point temperature. At the same time, a large amount of liquid water is condensed and separated by the gas-liquid separator, and then automatically discharged from the machine to achieve the effect of dehydration and drying.

Adsorption dryer: The saturated compressed air is in contact with the dryer to adsorb a large amount of water in the compressed air to achieve deep drying. The dry re-gas can also suck out the moisture in the dryer, achieve the two tower cycle work, continue to provide dry compressed gas, the compressed air dew point can easily reach -40 ° C.

2. Energy consumption and operating costs

Refrigerated dryer: In the process of refrigerant compression to achieve cooling, a large amount of energy supply is required, and the energy consumption is high.

Adsorption dryer: The regeneration process needs to consume a certain amount of energy, the power of the electric heater is high, and the power consumption is high.

3. Scope of application

Frozen dryer: Frozen dryer can remove 99% of the moisture in the compressed air, often used in electronics, painting and plastic, food, chemical and other more strict industries.

Adsorption dryer: Often used in the need for low dew point dry air, such as compressed air systems, pharmaceutical and electronics industries, it can provide stable low humidity air to ensure product quality.

4. Failure rate and maintenance

Refrigerated dryer: with three major systems, namely refrigerant, air and electrical, the complex components of the system also increase the probability of failure. Therefore, it is necessary to regularly check and maintain the refrigeration system, clean the condenser and heat exchanger, or replace the refrigerant and filter element.

Adsorption dryer: In the case of frequent start of the valve may cause failure, so in general, only need to replace the adsorbent and filter element regularly, and its long life brings relatively low maintenance costs.

In summary, adsorption dryers and frozen dryers have great differences in working principle, energy consumption, application scope and fault maintenance. Refrigerated dryers are widely used to provide lower dew point temperatures and stable drying effects, but require higher energy consumption and larger installation space; Adsorption dryers can be used in applications requiring a low dew point, its smaller size, low maintenance costs. Enterprises can combine their actual needs and economic conditions to choose the right dryer.