Many people don't understand what PSA is, PSA is pressure swing adsorption, PSA process is a simple method of oxygen production, using air as raw material, energy consumption is only the energy consumed by air compressor, with low operating cost and low energy consumption. The advantages of high efficiency, so the popular PSA oxygen generator can also be called pressure swing adsorption oxygen generator, but in addition to medical oxygen, some industrial and commercial also need oxygen support, today we will come to understand the oxygen in the industry.
First, the principle of pressure swing adsorption oxygenation:
The PSA oxygen generator uses zeolite molecular sieve as the adsorbent, and uses the principle of pressure adsorption, depressurization and desorption to adsorb and release oxygen from the air, thereby separating the oxygen automatic equipment. The separation of O2 and N2 by zeolite molecular sieves is based on the small difference in the kinetic diameter of the two gases. The N2 molecule has a faster diffusion rate in the micropores of the zeolite molecular sieve, and the O2 molecule has a slower diffusion rate. As the industrialization process continues to accelerate, the market demand for PSA oxygen concentrators continues to increase, and the equipment plays an important role in the industrial sector.
1. Application of oxygen generator in the field of oxyfuel combustion
The oxygen content in the air is ≤ 21%. The combustion of industrial boilers and industrial kiln fuels is also performed at such air levels. Practice shows that when the amount of oxygen gas burned by the boiler reaches 25% or more, the energy saving is as high as 20%; the boiler start-up time is shortened by 1/2-2/3. Oxygen enrichment is the application of physical methods to collect oxygen in the air so that the oxygen content in the collected gas is 25%-30%.
2. About the application of oxygen generator in the field of papermaking
As the country upgrades the environmental protection requirements of papermaking processes, the requirements for pulp (including wood pulp, mash pulp, and bamboo pulp) are becoming higher. The pulp production line using chlorine bleaching has to be gradually transformed into a chlorine-free bleached pulp production line; The new pulp production line requires a chlorine-free bleaching process, pulp bleaching does not require high-purity oxygen, and the oxygen produced by the pressure swing adsorption oxygen generator meets the requirements, which is economical and environmentally friendly.
3. Application of oxygen generator in the field of non-ferrous smelting
With the adjustment of the national industrial structure, non-ferrous smelting has developed rapidly in recent years. Many manufacturers have begun to use pressure swing adsorption oxygen generators in the process of blowing lead, copper, zinc, and smelting with oxygen bottom and smelting plants for oxygen leaching of gold and nickel. The market for the use of PSA oxygen generators has expanded.
The quality of molecular sieves used in PSA oxygen generators is dominant. Molecular sieves are the core of pressure swing adsorption. The superior performance of molecular sieves and the length of service life have a direct impact on the stability of yield and purity.
Second, the pressure swing adsorption oxygen equipment selection considerations:
1. First confirm the requirements for the final product gas of the required oxygen equipment before the specific selection, and determine the process of the required equipment under the manufacturer's suggestion;
2. Investigate the rationality of equipment design (whether the setting of each accessory is reasonable, necessary, and exert its maximum effect);
3. Investigate the reliability of equipment operation (to verify the rationality of the measures in the equipment design);
