The working principle of the flue gas treatment system mainly includes the following aspects:
Adsorption: The flue gas first passes through an adsorption device, such as an activated carbon adsorber. Activated carbon and other adsorbents have a large specific surface area and adsorption capacity, which can effectively adsorb harmful substances in flue gas, such as benzene, toluene and other organic substances.
Absorption: Next, the flue gas enters the absorption device. Here, chemical solutions or solvents are used to dissolve the harmful substances in the flue gas in the solution through spraying, washing, etc., so as to achieve the purpose of purifying the flue gas. For example, lye absorption technology can remove acidic gases such as sulfur dioxide.
Condensation: The condensation process is mainly by reducing the temperature of the flue gas, so that the harmful substances in it condense into droplets. This process can be achieved through a condenser, which usually uses cooling water or other cooling medium to cool the flue gas to below **, so that the harmful substances can be condensed and separated.
Dust removal: The flue gas may also contain particulate matter, such as fly ash, soot, etc. The dust removal process can be achieved by a bag filter or an electrostatic precipitator. Bag filters use filter bags to capture particles, while electrostatic precipitators charge particles and adsorb them on electrodes through electrostatic action.
Emission: After the above treatment, the content of harmful substances in the flue gas has been greatly reduced, and after meeting the environmental protection standards, it is safely discharged into the atmosphere through the discharge pipeline.