Pressure Swing Adsorption PSA Nitrogen Generator

I.Overview

Pressure Swing Adsorption (PSA) is a gas separation technology that has an irreplaceable position in on-site gas supply. The adsorbent (called carbon molecular sieve) is the core part of the PSA nitrogen production equipment. It uses the difference in the adsorption capacity of different components in the gas medium on the adsorbent. The adsorbent performs selective adsorption when the pressure increases, and when the pressure decreases Obtain desorption and regeneration, so that the product-nitrogen is continuously produced in alternating cycles.

II.Principle of PSA Nitrogen Generator

The air is compressed by an air compressor, and the air enters the buffer tank for storage, and is filtered by a filter system to remove oil, dust, and water. Then it is freeze-dried by a freeze dryer and enters the nitrogen generator. The compressed air that enters the nitrogen-making device is first passed through an integrated high-efficiency filter to deeply remove oil and water, then is stabilized by the air buffer tank, and then enters the adsorption tower filled with carbon molecular sieve, where the clean compressed air is separated from oxygen and nitrogen. The obtained nitrogen is sent to a nitrogen buffer tank, tested by a nitrogen analyzer and measured by a flow meter, unqualified nitrogen is vented, and qualified nitrogen is stored in a nitrogen storage tank for production use.

In the case of adsorption equilibrium, when the same gas is adsorbed, the higher the gas pressure, the greater the adsorption capacity of the adsorbent. Conversely, the lower the pressure, the smaller the adsorption capacity. As shown below：

III.Product features

1. The output pressure is 0--0.7MPa, which can fully meet the high pressure requirements of the gas source.

2. The machine includes an air compressor, a cold dryer and a filtration system.

3. The bottom of the nitrogen generator has a load-bearing wheel and a lock design, which is stable and easy to move

4. With nitrogen purity meter and flow meter, it can display nitrogen purity and flow in real time, which is easy to operate.

5. Adopting specially designed compressed air micro-oil adsorber, using PSA nitrogen-making activated carbon to absorb the residual oil in the compressed air to prevent possible trace oil penetration and provide protection for carbon molecular sieve.

6. With long-term cooperation experience with domestic and foreign molecular sieve manufacturers, more energy-saving products can be selected according to the user's working conditions.

7. The air storage tank provides the compressed air required by the oxygen-nitrogen separation unit, reduces the load of the compressed air purification unit, reduces system pressure fluctuations, reduces air flow pulsation, improves purification performance, reduces failure rate, and increases service life.

8. The nitrogen buffer tank balances the purity and pressure of the nitrogen output from the oxygen-nitrogen separation unit, provides high-purity nitrogen required for the secondary uniform process, optimizes the nitrogen distribution in the adsorption tower bed, and ensures the stable nitrogen flow, purity and pressure.

IV.Technical parameter：