Key Points about Industrial Oxygen Generators—understand Them at A Glance

Industrial oxygen generators utilize air separation technology to compress air at high density. By leveraging the differing condensation points of various components in the air, they facilitate gas-liquid separation at a specific temperature, followed by further distillation to produce oxygen. Industrial oxygen is typically obtained through this physical method.

Features of industrial oxygen generators:  

1. Equipped with a user-friendly human-machine interface and intelligent control system, ensuring simple operation and rapid production of qualified oxygen;

2. Utilizes advanced molecular sieve packing technology, making the molecular sieves more compact and durable, thereby extending their service life;

3. Features internationally renowned PLC controllers and pneumatic valves, enabling automatic switching and ensuring stable equipment operation;

4. Pressure, purity, and flow rate are stable and adjustable according to actual conditions to meet different customer needs;

5. Compact structure, attractive appearance, and minimal floor space.

The process flow is explained as follows:

Air is compressed by an air compressor, then undergoes dust removal, oil removal, and drying before entering the air storage tank. It then passes through the air inlet valve and left inlet valve into the left adsorption tower, where the tower pressure increases. Nitrogen molecules in the compressed air are adsorbed by the zeolite molecular sieves, while unadsorbed oxygen passes through the adsorption bed, then through the left gas outlet valve and oxygen gas outlet valve into the oxygen storage tank. This process is referred to as left adsorption and lasts for several seconds. After the left adsorption process is complete, the left adsorption tower and right adsorption tower are connected via a pressure equalization valve to balance the pressure between the two towers. This process is referred to as pressure equalization and lasts for 3–5 seconds. After pressure equalization, compressed air passes through the air inlet valve and right inlet valve into the right adsorption tower. Nitrogen molecules in the compressed air are adsorbed by zeolite molecular sieves, and the enriched oxygen passes through the right gas outlet valve and oxygen gas outlet valve into the oxygen storage tank. This process is called right adsorption and lasts for several seconds. Simultaneously, the oxygen adsorbed by the zeolite molecular sieves in the left adsorption tower is released back into the atmosphere through the left exhaust valve. This process is called desorption. Conversely, while the left tower is adsorbing, the right tower is simultaneously desorbing. To ensure that the nitrogen released from the molecular sieves under reduced pressure is emitted into the atmosphere, oxygen is blown through a normally open backflush valve to sweep the adsorption tower undergoing desorption, expelling the nitrogen from the tower. This process is called backflushing, which occurs simultaneously with desorption. After the right adsorption process is completed, the system enters the pressure equalization process, then switches to the left adsorption process, and continues in this manner to continuously produce high-purity oxygen.

Usage precautions:  

1. Adjust the regulating valve before the flowmeter and the oxygen production valve after the flowmeter according to the pressure and airflow. Do not arbitrarily adjust the flow to ensure normal operation of the equipment.

2. The opening of the inlet valve and oxygen production valve should not be too large to ensure the purity meets requirements.

3. Valves adjusted by commissioning personnel should not be arbitrarily moved to avoid affecting purity.

4. Do not move the electrical equipment inside the control panel or remove the pneumatic pipeline valves.

5. Operators should regularly inspect the four pressure gauges on the machine and record any pressure changes daily to analyze equipment faults.

6. Regularly monitor the outlet pressure, flow meter readings, and oxygen purity, compare them with the performance specifications, and address any issues promptly.

7. Maintain and service the compressor, refrigerated dryer, and filter according to technical requirements to ensure air quality. The compressor and refrigerated dryer must be inspected at least several times a year, and wear-prone parts must be replaced in accordance with equipment maintenance procedures. Filters requiring repair must be replaced immediately.

8. When repairing equipment, the air supply must be shut off (the air tank pressure gauge must display zero) and the power supply disconnected before proceeding with repairs.

9. Complete the daily record form in full.