Today, the industrial nitrogen generator manufacturer-Suzhou Hengda Purification Equipment Co., Ltd. will tell you the working principle of the pressure swing adsorption nitrogen generator and the solution to the excessive oxygen content of the nitrogen generator.

The working principle of pressure swing adsorption nitrogen generator

The pressure swing adsorption nitrogen generator is based on the principle of pressure swing adsorption, using high-quality carbon molecular sieve as the adsorbent. Under certain mechanical effects, the diffusion rate of oxygen in the micropores of carbon molecular sieve is much greater than that of nitrogen. When the adsorption does not reach equilibrium, nitrogen It is enriched in the gas phase to form the finished nitrogen gas. Then the pressure is reduced to normal pressure, and the adsorbent desorbs other impurities such as oxygen adsorbed to achieve regeneration. Generally, two adsorption towers are set up in the system, one tower absorbs nitrogen, and the other tower desorbs and regenerates, which is automatically controlled by PLC program to make the two towers work alternately to achieve the purpose of continuous production of high-quality nitrogen. Under pressure, the purified and dried compressed air is subjected to pressurized adsorption and decompression desorption in the adsorber.

The solution to the excessive oxygen content of the nitrogen generator

1. Calibrate the oxygen controller to check whether the instrument measures accurate oxygen probe life or not.

2. Whether the sampling pipeline of the nitrogen analyzer falls off or is not smooth, adjust it to normal.

3. The gas output of the nitrogen generator exceeds the rated gas volume. The calculation method of the actual gas volume is if it is a glass rotor flowmeter or a metal rotor flowmeter: the actual flow reading=√pressure+1×The reading on the flowmeter If it is the pot street flow Calculated actual flow reading = (pressure + 1) × reading on the flowmeter

4. Check whether the adsorption pressure of the nitrogen generator is too low

5. Check whether there is leakage in the valve or pipeline of the nitrogen generator.

1) Whether there is air leakage in the system, including internal leakage and external leakage

2) Whether the time control between several links of pressure swing adsorption is reasonable to avoid mutual mixing?

3) Whether the selection of molecular sieve is appropriate, it must be able to separate oxygen and nitrogen well

Regarding the working principle of the nitrogen generator and the solution to the excessive oxygen content, I will tell you here; Suzhou Evergrande purification equipment is waiting for your visit. You just need it, and I happen to be a professional.