Introduction Due to the development and utilization of oxygen molecular sieve adsorbent and continuous improvement of technological process, which makes the 1960s founded pressure swing adsorption air separation PSA technology develop rapidly. compared with the air separation device, pressure swing adsorption air separation by psa process has a short start-up time and open parking convenience, less energy consumption and low operation cost, high degree of automation and simple maintenance, cover a small area and low construction cost. Thus, psa oxygen generation occupy more market share, particularly in the field of saving energy and reducing consumption of oxygen-enriched combustion.
The key of pressure swing adsorption for gas separation technology is the selection of adsorbents. The properties of adsorbents directly affect the final separation effect, and even affect the selection of process steps and the vitality of pressure swing adsorption.Generally, A and X zeolites are used in PSA air separation for oxygen production. However, due to their low separation selectivity and low adsorption capacity to nitrogen, the development of PSA oxygen production technology is constrained.Based on this situation, many companies at home and abroad are actively engaged in the research and development and promotion of new oxygen-rich adsorbents.At present, many companies at home and abroad are actively developing and promoting the new generation of lithium low silicon oxygen molecular sieves.
Advantages Lithium low silicon oxygen generation molecular sieve, its advantages are producing high purity of oxygen, small mechanical wear, long service life, high oxygen production ratio, equipment volume and energy consumption of air compressor can be greatly reduced under the same amount of oxygen production.