- January 13, 2024
Imen Datis Asia Co
Imen Datis Asia Co
Today, due to the expansion of compressed air compressors (piston, screw) in all types of small and large industries, as well as the need for clean compressed air without environmental pollutants, water and moisture, consumers are forced to use the dryer compressor system. or an industrial dryer. Using an air compressor dryer prevents moisture and rust in the compressed air transmission piping system and prevents damage and failure of air tools connected to the compressed air compressor system.
Using an air compressor dryer is one of the basic and important steps in cleaning the compressed air coming out of the air pump, but it should also be considered that the next step that completes the first step is the use of water. Compressor Primary and secondary compressors increase the purity of compressed air up to 99%.
As mentioned, Dryer Air is responsible for removing the moisture in the air compressed by screw compressors and air compressors. The exhaust fumes from compressors can cause many problems for compressed air consuming devices, so using a compressor dryer will prevent these problems. Air drying in dryer compressors is completely influenced by the environmental conditions and the sensitivity of the machines. Industrial dryers are usually installed after the main compressor, compressor tank and water trap, and remove moisture from the air by several different methods.
After the coarse particles of water are removed from the compressed air and the air enters the drying machine, the remaining water particles will be absorbed and the efficiency of the pneumatic equipment will be increased by reducing the temperature and moisture absorbent materials. Of course, in a number of compressors, microfilters and water traps are used to increase air quality.
The air compressor dryer is divided into two general categories:
The first thing about dryers is their capacity, which is usually shown as Q. The capacity of dryers is calculated in terms of cubic meters per minute and is also indicated by cfm, and it means the amount of capacity that the compressed air supplied to the dryer has.
Another point is the air pressure that enters the dryer, which is usually calculated in bar. The important point is that usually each brand or dryer manufacturer calculates the pressure in a specific way and presents it in the form of a table of effective pressure coefficients. It should be noted that the higher the pressure, the smaller the capacity of the dryer needed for drying.
Therefore, the higher the dew point temperature, the smaller the size of the dryer required. On the other hand, if the ambient temperature increases, larger dryers should be used. Also, if the air temperature is higher, bigger dryers should be used. Among the advantages of the dryer, the following can be mentioned.
Generally, dryers are produced in two types, absorption and refrigeration. The first type are refrigeration dryers.
All kinds of refrigeration dryers cool the compressed air and cause the moisture to leave it in a completely controlled manner. This causes the dew point temperature to reach close to zero. The meaning of dew point temperature is the temperature at which, if the air reaches that temperature, it shows its moisture in the form of water droplets. The importance of using this temperature is that it can assure the user that there will be no moisture or water in the compressed air before the temperature reaches zero degrees Celsius.
Currently, there are various types of refrigeration dryers in the market, which are designed and produced by different brands.
But absorption dryers absorb moisture by using some moisture absorbent materials, such as silica gel, active alumina, or molecular resin. Absorbent materials have very small holes that trap moisture in them. Of course, it is necessary to dry and remove moisture after absorbent materials have absorbed moisture.
This is why there are usually two tank towers for them; One of these tanks dehumidifies absorbent materials and the other tank desaturates them by using part of the dried air in the other tank. The important thing about absorption dryers is that the dew point temperature in them can even drop to 70 degrees Celsius below zero. It should also be noted that since evaporators are highly sensitive, microfilters should usually be used along with dryers.
One of the types of air compressor dryer is a refrigeration dryer that is placed after the piston or screw type compressed air compressor, and by cooling the air coming out of the air pump, it condenses water vapor and oil vapor in the compressed air. In this way, the steam turns into a liquid and is removed from the refrigeration dryer by means of autodrain.
Compressor refrigeration dryers have the ability to absorb moisture up to the dew point of at least 3 degrees Celsius, and for values less than 3 degrees Celsius, the consumer has to choose and use absorption dryers. (Dew point is the temperature at which water vapor turns into liquid particles.)
Another type of compressor dryer is absorption dryer, which is placed after the screw compressor in sensitive industries to remove pollution and particles of water vapor and oil. The main difference between it and the refrigeration dryer is the dew point, which is between -30 and 3 degrees Celsius.
Absorption dryers consist of two towers, inside these towers are placed moisture absorbing materials such as molecular active or active alumina, which absorb moisture by these materials and one tower is always absorbing moisture and the other tower is It is the regeneration of moisture absorbent materials, which is done by placing an electric heater or an air blower.
Absorption dryer is made in two types with heater and without heater, and a pair of primary and secondary microfilters and a water trap are placed on it. Among the weaknesses of the absorption dryer compared to the refrigeration dryer, we can mention the higher maintenance cost as well as the higher price.
But absorption dryers absorb moisture by using some moisture absorbent materials, such as silica gel, active alumina, or molecular resin. Absorbent materials have very small holes that trap moisture in them. Of course, it is necessary to dry and remove moisture after absorbent materials have absorbed moisture.
This is why there are usually two tank towers for them; One of these tanks dehumidifies absorbent materials and the other tank desaturates them by using part of the dried air in the other tank. The important thing about absorption dryers is that the dew point temperature in them can even drop to 70 degrees Celsius below zero. It should also be noted that since evaporators are highly sensitive, microfilters should usually be used along with dryers.
For more information, contact our technical experts at Imen Datis Asia Engineering Company.
If we want to summarize what the use of the dryer is, we must mention its use in all kinds of compressors that work with compressed air, such as screw and piston compressors. Some types of these compressors are used in refrigerators and freezers or in building air conditioners, and their task is to compress air. Also, dryers prevent compressed air pipelines or various types of pneumatic tools that are used with compressors and are actually connected to them, from rotting, wearing out and rusting due to moisture.
Note that using the right size of dryer is very important, and of course, you should also pay attention to the weather and geographical conditions when choosing it. In fact, if the dryers are smaller than the required size, the device in question will overheat and this overheating will cause the work efficiency to decrease drastically.
One of the most important things that should be taken into account when using an air compressor dryer in order to increase the life and efficiency of the device is to choose the appropriate capacity of the dryer according to the capacity of the compressor, replace the internal and external filters, and observe the principles of maintenance. According to the catalog of the manufacturer of the dryer.
Imen Datis Asia Company is recognized as one of the top companies in the private sector in the field of safety and fire fighting, relying on modern knowledge, continuous activity and the cooperation of highly specialized forces. This group is always trying to continuously and dynamically expand the safety and firefighting infrastructure of our beloved country Iran and take great steps in order to achieve goals such as the development and industrialization of new technologies.
