DHP Air Dry Machine designed and manufactured by Acore Filtration Co.,Ltd sales to Canada, which mainly supply dry air when installing and maintaining the transformers, reactors and other large-scale power equipment. The dew point of dry air can reach -70°C. The Dry Air Generator can replace the traditional hot oil circulation, nitrogen supplementation, vacuum and other drying methods, and is more efficient, economical, safe and environmentally friendly.

The dry air machine device is mainly composed of four parts: air compressor, freeze drying system, adsorption drying system and electrical control system. The air enters the air storage tank through the air compressor, and most of the water is compressed and liquefied and discharged through the drain valve, and the air is sub-dried; After entering the refrigeration dryer, the water vapor is condensed into water, and the air is dried for the second time; Then enter the adsorption dryer for the third drying, adsorb the remaining trace water, and transport it to the equipment that needs to dry the gas through a high-precision air filter.

The dry air generator has the advantages of stable output pressure, low noise and strong purification ability, and is an ideal air source to replace high-pressure air cylinders. The product can not only meet the use of various types of domestic and imported gas chromatographs and various analytical laboratories, but also can be used as an air source for high-purity nitrogen generators. The Air Dry Machine is powered by a fully enclosed compressor, which purifies the natural air through three stages to remove water, oil and impurities in the air, and outputs stable and clean air through the pressure stabilizing device.

Air separation is most commonly achieved through refrigeration and distillation. This method is based on the differences in boiling points of different components at different temperatures and uses the principles of condensation and vaporization for gas separation.

Specifically, commonly used air separation methods include the following steps:

1. Compression: Compress air in the atmosphere through a compressor to increase gas density and pressure.

2. Precooling: Pass the compressed air into air coolers (precoolers) to cool it under normal pressure and condense the water vapor in it.

3. Expansion (expander or expansion valve): Pass the cooled gas through the expansion device to reduce both the pressure and temperature.

4. Separation: Pass the expanded gas into a separation device, usually a distillation tower or adsorption column.

    a. Distillation method: Separation using the differences in boiling points of different components in the air. In the distillation column, the temperature is gradually increased, causing the different components to vaporize and condense respectively, thereby separating oxygen, nitrogen and other inert gases.

    b. Adsorption method: Use an adsorbent, such as activated carbon, to selectively adsorb certain components. By changing pressure and temperature, the adsorbent can adsorb and desorb to achieve gas separation.

5. Product collection: After separation, the pure oxygen and pure nitrogen obtained are collected separately for further processing and storage.

This air separation method produces high-purity oxygen and nitrogen for use in many applications such as medical, industrial and scientific research.

Low-Temperature Oxygen and PSA (Pressure Swing Adsorption) are two common air separation technologies.

Low-temperature oxygen is used to separate oxygen and nitrogen in the air through low-temperature fractionation. The process exploits differences in the boiling points of air to separate gas components by cooling the air to a liquefied state and then gradually raising the temperature. Under low temperature conditions, oxygen in the air liquefies earlier, while nitrogen remains in a gaseous state. The liquid oxygen is then separated by distillation and collected.

 PSA uses the selective adsorption properties of adsorbents to separate oxygen and nitrogen. In the PSA oxygen generator process, air passes through a pressure swing adsorption tower composed of adsorbents. Adsorbents have different adsorption capacities for oxygen and nitrogen. During the adsorption stage, the adsorbent selectively adsorbs nitrogen while oxygen passes through. Then, during the pressure shift phase, the pressure is reduced so that the adsorbent releases the adsorbed nitrogen, making it available for adsorption sites again.

 Therefore, cryogenic oxygen and PSA are two different air separation processes. Low-temperature oxygen mainly relies on the boiling point difference of the gas, while PSA nitrogen generator uses the selective adsorption of the gas by the adsorbent to achieve separation. The choice of which process to use depends on the needs and technical requirements of the specific application.