As the main equipment of industrial power gas source of air compressor, with the gradual development of industry, air compressor is almost applied to all walks of life. The dryer, used as a reprocessing equipment for compressed air is also essential. At present, the types of dryer are cold dryer and suction machine. Drtter due to different regeneration methods. It is divided into pressure regeneration, micro heat regeneration blast regeneration, compression heat regeneration to make the dryer.
1、 Cold dry machine
Cold dryer is the frozen dryer, its working principle is based on the working principle of refrigeration cycle. Through the refrigerant in the evaporator heat absorption (compressed air heat), the compressed air cooling, the compressed air under the same pressure, different saturation humidity at different temperatures, there will be liquid condensate water precipitation, through the trap automatically eliminated. After the compressed air with the cooling and the compressed air with the higher temperature at the inlet, the temperature is raised again and discharged. So as to achieve the purpose of reducing the dew point temperature of compressed air. Because its working principle is refrigeration cycle cooling, the dew point temperature range of compressed air is 2~10. Because of its cheap price and simple installation, the energy is mainly electric energy consumption, which will not involve environmental pollution and other factors. In the case that the dew point temperature of compressed air is not too low, it can be given priority.
2、 No heat regeneration
The regeneration mode of heat-free regeneration dryer is to relieve the water in the adsorbent, so as to achieve the purpose of adsorbent regeneration. The characteristic of this kind of dryer is that it does not need heat source, directly through the dried compressed air as the regas source, and the dew point temperature can reach-20℃ ~ -40.℃The disadvantage is that the need to waste more gas source.
3、 Microthermal regeneration
Microthermal regeneration is through the additional heat source, using the regeneration characteristics of the adsorbent inside heating regeneration principle, through heating relife, slowly make the water in the adsorbent desorption. Make the adsorbent has the ability to readsorb water. The characteristics of microheat equipment can reduce the waste of recycled compressed air under the case of heating heat source, and the dew point temperature can reach-20C ~ -40C. But the disadvantage needs to heat up the heat source, and the volume increases accordingly. If the equipment can be used nearby waste heat, the equipment can also be appropriate selected.
4、Wind and heat regeneration
The blast thermal regeneration dryer is characterized by an external blower, by heating the blast air to remove the moisture from the adsorbent, so as to achieve the purpose of regeneration. Its characteristic is that the waste of recycled compressed air is further reduced, and the dew point temperature can reach-20C~ -40C. But also need to heat the heat source, and need to increase the consumption of the blower power, the volume is further increased.
5、 Compressed thermal regeneration
Compression heat regeneration adsorption dryer is the market for energy utilization more sufficient dryer, make full use of the compressor compression in the process of heat source, through the use of air compressor exhaust part of the high pressure high temperature heat source heating adsorbent, the adsorbent regeneration, cooling after further cooling compressed air and another part of the compressed air mixed into the adsorption water adsorption, so as to achieve the purpose of reducing the dew point. The dew point of compressed air can reach-20C-30. It can completely reach the dew point temperature of compressed air required by general enterprises. Waste heat utilization adsorption dryer because of no energy waste, but the long-term operation cost saving is very considerable. At present, the market is more and more affected by the priority choice of enterprises. But at the same time, because of its complex structure, and its use occasion needs to be strictly combined with the air compressor, the current market waste heat utilization type adsorption dryer are all equipped with oil-free compressor, that is, supporting centrifugal compressor and oil-free screw machine for supporting use. So in the investment of its price is also higher than other no heat regeneration and external heat source regeneration adsorption dryer is much higher. In the investment selection, the cost recovery period can be calculated according to the demand and energy savings.
Conclusion
Drdryer as a reprocessing equipment for compressed air. It is selected and used with the air compressor, in the selection of the first selection of the air compressor to select the appropriate dryer. At the same time, the investment cost budget, future energy consumption, maintenance cost and other factors should be more careful selection.
Our company’s alumina dryer, molecular sieve and other adsorbent can be applied to the above dryer, which can reach the lowest pressure dew point of-40℃，It can run stably, and the adsorption efficiency is still more than 95% after regeneration.
Post time: Mar-28-2023
