operational principle

By utilizing the differences in adsorption performance of nitrogen and oxygen in the air on zeolite molecular sieves (ZMS) due to different pressures, selective adsorption is carried out for oxygen nitrogen separation, adsorption of nitrogen and other impurities, and generation of oxygen.

Similar to the nitrogen production process of air pressure swing adsorption separation, compressed air with a certain pressure (0.3Mpa -0.55MPa) is removed from oil, dust, and most of the gaseous moisture by the air pre-treatment system. Clean air enters the PSA O ₂ system adsorption tower, which is equipped with a boiling stone sieve (ZMS). Most of the nitrogen, carbon dioxide, and residual moisture in the clean air are adsorbed by the boiling stone sieve, while oxygen is separated. When the impurity components adsorbed in the adsorption tower reach the set control value, the oxygen generation adsorbent of the adsorption tower is regenerated through atmospheric pressure desorption and desorption. The adsorption and separation system composed of two towers is controlled by the PLC system to achieve continuous oxygen production through cycle switching of process control valves. This oxygen production process is called the pressure swing adsorption atmospheric pressure desorption oxygen production process.

Excellent performance and quality assurance

1. Simple process: The equipment has a simple process flow and modular design

2. Strong adaptability: product purity and yield are easy to adjust, with strong adaptability

3. Long lifespan: Imported molecular sieves are used, with a normal lifespan of up to ten years, stable performance, and low maintenance costs.

4. High automation: The equipment has a high degree of automation and is fully automatic and unmanned operation. It provides an alarm for unqualified oxygen, automatic evacuation, convenient and fast startup and shutdown, and remote centralized monitoring function. It can obtain real-time data related to yield, purity, and other related data.

5. Stable operation: The equipment has good operational stability, high reliability, strong independence, high safety performance, and also has fault diagnosis, alarm, and automatic shutdown functions.

Technical indicators

Oxygen production: 5-500Nm3/h

Oxygen purity: 65-93%

Outlet pressure: 0.2-0.5Mpa

Oxygen dew point: ≤ -45 ℃