Method of replacing molecular sieve
The impurities of oil and water directly enter into the adsorption tower with air and are absorbed by carbon molecular sieve, resulting in poisoning. The analytical ability is seriously damaged, and the amount and purity of nitrogen production are greatly reduced. In addition, when the carbon molecular sieve reaches a certain service life, its nitrogen purity will obviously decline, which can not guarantee the use requirements. In such cases, it is necessary to consider replacing the carbon molecular sieve.
Insoluble in water, thermal stability and acid resistance increase with the increase of SiO2 / Al2O3 composition ratio. Molecular sieves have a large specific surface area, up to 3001000m2 / g of inner crystal surface highly polarized. They are a kind of high-efficiency adsorbent and a kind of solid acid. They have high acid concentration and acid strength on the surface, which can cause positive carbon ion type catalytic reaction.
The impurities of oil and water directly enter into the adsorption tower with air and are absorbed by carbon molecular sieve, resulting in poisoning. The analytical ability is seriously damaged, and the amount and purity of nitrogen production are greatly reduced. In addition, when the carbon molecular sieve reaches a certain service life, its nitrogen purity will obviously decline, which can not guarantee the use requirements. In such cases, it is necessary to consider replacing the carbon molecular sieve.
Insoluble in water, thermal stability and acid resistance increase with the increase of SiO2 / Al2O3 composition ratio. Molecular sieves have a large specific surface area, up to 3001000m2 / g of inner crystal surface highly polarized. They are a kind of high-efficiency adsorbent and a kind of solid acid. They have high acid concentration and acid strength on the surface, which can cause positive carbon ion type catalytic reaction.