How to extend the service life of a nitrogen generator

Many people have used nitrogen generators, but not everyone knows how to extend their lifespan. Here's a simple operating procedure.

Release time:

2018-11-05

How to extend the service life of a nitrogen generator

Many people have used nitrogen generators, but not everyone understands how to extend their lifespan. Below is a simple operating procedure.

1. Turn off the nitrogen generator, nitrogen inlet valve, and sampling valve, and also turn off the power switch of the nitrogen generator. Wait for the system and pipeline to completely depressurize (the exhaust gas from the system is concentrated oxygen; pay attention to fire safety and ensure good indoor air circulation). Adjust the oxygen analyzer for sampling and adjust the pressure reducing valve to 1.0 bar. Adjust the sampling flow meter to set the gas flow to around 1. Note that the sampling gas volume should not be too large. Begin detecting the nitrogen purity.

2. When the compressed air source pressure reaches 0.7 MPa or more, open the nitrogen generator's main inlet stop valve. Then, adjust the pressure reducing valve to reduce the pressure to around 0.4-0.5 MPa. At the same time, observe the pressure conditions of the two adsorption tanks and whether the pneumatic valve is operating normally.

3. Then, turn on the nitrogen generator power switch on the PLC main station control cabinet clockwise. Observe the pressure changes of the two adsorption towers to determine whether the two adsorption towers can switch normally. When the regeneration tower pressure is zero and uniform, the pressure of the two towers should be close to half of the original working tower pressure.

4. Turn on the oxygen meter's power switch and adjust the appropriate sampling flow, observing the oxygen content. Adjust the opening of the purity valve according to the required nitrogen purity. After the purity is qualified, it will automatically switch to the nitrogen storage tank. The nitrogen storage pressure in the storage tank is generally around 0.6-0.8 MPa.

5. Close the entire system and its components. When the adsorption tank pressure of the nitrogen generator reaches around 0.6 MPa, observe whether the nitrogen generation system is working normally.

6. Slowly open the vent inlet stop valve and adjust the flow rate to 1/2 of the rated flow (hospital central oxygen supply system). Adjust the opening of the nitrogen inlet valve to adjust the purity and flow rate of the nitrogen.

7. Observe whether the oxygen content indicated by the oxygen meter meets the requirements. When the nitrogen purity meets the requirements, slowly open the pure gas outlet stop valve and adjust the flow rate to the required flow rate. Close the vent inlet stop valve. The equipment can be put into use after normal operation.

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