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Definition and working principle of chemical filter unit
Definition and working principle of chemical filter unitThe chemical filter unit is a kind of equipment used to purify indoor air, which removes harmful gases and pollutants through physical blocking and chemical absorption.(I) Mechanism of physical blocking Physical blocking in chemical filter units is mainly achieved by primary and medium efficiency filters. The primary plate dust filter is set at the air inlet of the anti-corrosion filter equipment, which can effectively intercept large particles of dust and impurities and play a role in preliminary filtering. The medium efficiency box filter at the air outlet can further filter out smaller fine particles to ensure that the output air is purer. This hierarchical filtration method is like a series of strict checkpoints, which gradually screens out particulate matter in the air and lays a good foundation for subsequent chemical absorption. (II) The process of chemical absorption In chemical filter units, chemical absorption is the key link in air purification. Adsorbents play a core role in this process. They react specifically with pollutants in the air to convert harmful gaseous pollutant molecules into harmless substances. For example, when pollutants such as hydrogen sulfide (H₂S), sulfur dioxide (SO₂), and nitrogen oxides (NOx) in the air come into contact with the adsorbent, they are adsorbed in the pores of the adsorbent and then chemically react with the active substances in the adsorbent to generate stable and harmless compounds. This chemical reaction is at room temperature, long-lasting, stable, and irreversible, thus ensuring that the pollutants are effectively removed and greatly improving the air purification effect. |
