Oxygen generator is a kind of machine for producing oxygen, its principle is the use of air separation technology. First, the air is compressed at high density and then the different condensing points of each component in the air make it separate into gas and liquid at a certain temperature, and then carry out rectification to separate it into oxygen and nitrogen. In general, because it is used to produce oxygen, people are used to calling it an oxygen generator. Because oxygen and nitrogen are widely used, oxygen generators are also widely used in the national economy. Especially in metallurgy, medical, chemical, petroleum, national defense and other industries used the most.

Working Principle of Oxygen Gas Generator Making Machine

1. PSA Nitrogen Plant adopts the principle that under a certain pressure, the diffusion speeds of oxygen and nitrogen are quite different

on carbon molecular sieve. In a short time, oxygen molecule is adsorbed by the carbon molecular sieve but nitrogen can pass through the

molecular sieve bed layer to separate the oxygen and nitrogen.

2. After the adsorption process, the carbon molecular sieve will regenerate by depressurizing and desorb the oxygen.
3. Our PSA Nitrogen Plant is equiped with 2 adsorbers, one in adsorption to produce nitrogen, one in desorption to regenerate the

molecular sieve. Two adsorbers work alternately to generate qualified product nitrogen continuously.

Equipment composition and description

1) Compressed air purification components
It consists of an efficient degreaser, a refrigerated dryer, a precision filter, and an activated carbon filter. After being compressed by the air compressor, the air first enters the air buffer tank for buffering, then enters the high-efficiency degreaser to remove most of the impurities such as oil, water, and dust, and is further dehydrated by the freeze dryer. It is then filtered by precision filters for oil and dust removal, and finally enters the activated carbon filter for further oil removal.
Our specially designed activated carbon filter can be used to prevent possible trace oil infiltration, ensuring effective protection of zeolite molecular sieves and extending their service life. The compressed air processed by this purification section can be used for instrument air.

2) Air buffer tank
Composed of an air buffer tank and associated valve instruments. Air buffer tank is used to reduce airflow pulsation and provide buffering effect; Thus reducing the fluctuation of system pressure, allowing compressed air to smoothly pass through the compressed air purification component to remove impurities such as oil, water, and dust, and reducing the load on the oxygen nitrogen separation system. At the same time, it also provides a large amount of compressed air required for rapid pressure increase in a short period of time during the switching of adsorption tower operation in the oxygen nitrogen separation system, which not only quickly raises the internal pressure to the working pressure, but also ensures the reliable and stable operation of the equipment.

3) Oxygen nitrogen separation system
It consists of an adsorption tower, a compression device, auxiliary valves, and instrumentation. The adsorption tower designed with a composite bed structure is divided into two towers, A and B. The tower is filled with imported zeolite molecular sieves, and the stretching torsion vibration filling method is used to make the zeolite molecular sieves more evenly packed. Clean compressed air first flows from the inlet end of tower A through zeolite molecular sieve towards the outlet end, where N2, CO2, and H2O are adsorbed, and product oxygen flows out from the outlet end of the adsorption tower. After a period of entry, the zeolite molecular sieve in tower A automatically stops adsorption before reaching saturation. Clean compressed air flows into tower B for nitrogen absorption and oxygen production, and regenerates the molecular sieve in tower A. The regeneration of molecular sieves is achieved by rapidly reducing the adsorption tower to atmospheric pressure to desorb N2, CO2, and H2O Two towers alternate for adsorption tower regeneration, completing oxygen and nitrogen separation and continuously producing oxygen.

4) Oxygen nitrogen buffer system
Composed of oxygen buffer tank, precision filter, flow meter, pressure regulating valve, venting components, etc. The oxygen buffer tank is mainly used to balance the pressure and purity of oxygen separated from the nitrogen oxygen separation system, ensuring stable continuous supply of oxygen. At the same time, after switching the operation of the adsorption tower, it returns some of its own gas to the tower, which not only helps to increase the pressure of the adsorption tower, but also protects the bed layer, playing an extremely important process auxiliary role in the equipment operation process. Finally, it is filtered by a precision filter to fully ensure the quality of oxygen.

Classification of oxygen concentrators

Application fields of oxygen production equipment

When the pressure increases, zeolite molecular sieves absorb nitrogen and produce oxygen. When the pressure drops to atmospheric pressure, zeolite molecular sieves desorb nitrogen and regenerate. Pressure swing adsorption oxygen production equipment usually has two adsorption towers, one for nitrogen absorption and oxygen production, and the other for denitrification and regeneration, so as to alternate and continuously produce oxygen.
Gold industry: oxygen enriched iron smelting in electric arc furnaces and oxygen enriched combustion assistance in vertical furnaces.
Nonferrous refining industry: lead smelting, copper smelting, zinc smelting, aluminum smelting, and various furnace oxygen enrichment.
Environmental protection industry: drinking water treatment, wastewater treatment, pulp bleaching, and biochemical treatment of pollutants.
Chemical industry: various oxidation reactions, ozone production, coal gasification.
Medical industry: oxygen therapy, oxygen therapy, sports and health care.
Aquaculture: Marine and freshwater aquaculture.
Other industries: fermentation, cutting, glass furnaces, air conditioning, waste incineration.