Liquid air separation plant molecular sieve adsorbers are used to remove impurities such as moisture, carbon dioxide and acetylene from the air by adsorption. The porous solids used in the adsorption process are called adsorbents.
The requirements of the adsorbent are mainly the following.
1) The adsorbent must be a porous substance. Adsorption can only be carried out on the surface of the solid, the more voids, the larger the surface area, the stronger the adsorption capacity.
2) The adsorbent must be selective adsorption, i.e. only the components that need to be removed are adsorbed, not all components of the mixture.
3) The adsorbent has a large adsorption capacity per unit, and the mass of material that can be adsorbed per kilogram of adsorbent should be large. If the adsorption in a liquid air separation plant capacity is small, the amount of adsorbent required should be more.
(4) The adsorbent should have a certain strength, pressure resistance, wear resistance, not easy to break.
(5) The adsorbent is easy to desorb and regenerate.
(6) The price of the adsorbent is cheap.
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