CADAIR provides high quality scrubber that efficiently treat particulate matter, droplets, acid and alkaline gaseous pollutants, volatile organic compounds (soluble) and toxic substances by adding different chemical agents.
The scrubber consists of a packed column where the air flow makes countercurrent contact with the sprayed droplets to absorb pollutants and further chemical reactions. In addition to the outside of the tower, the scrubber system includes one or more circulating pumps for circulating the absorbent solution.
When treating with gases that contain acidic (such as hydrogen chloride, hydrogen fluoride, sulfuric acid, etc.) or alkaline (such as ammonia, etc.) pollutants, for acidic pollutants, a strong alkaline solution is used to neutralize acidic contaminants, while an acidic solution is employed to neutralize alkaline contaminants.
In cases where the process air contains halides that is oxidized in the incineration system, these halides recombine with hydrogen to form the corresponding acid. In the case of chlorine (Cl), when combined with hydrogen, hydrogen chloride (HCl) is formed. This fact means that a scrubber with an alkaline absorbent solution, such as sodium hydroxide (NaOH) solution, must be installed at the outlet of the oxidation furnace.
