Flue gas treatment is the process of reducing the amount of pollutants that are emitted when fossil fuels, including wood, natural gas, oil, and coal are burnt at a power plant, an industrial facility, or any other place. These pollutants, if released freely, can affect the quality of air, both locally and regionally, quite substantially. Read on to see the details around the process of flue gas treatment.
What is flue gas?
As mentioned, flue gas is a by-product of burning fossil fuels. This gas exits the fireplace, furnace, boiler, or steam generator, via a pipe called a flue, entering the atmosphere. The composition of flue gas depends on the specific fuel that' s being burnt, but the main components include nitrogen dioxide, water vapor, carbon dioxide, and particulate matter, including sulfur oxides and soot.
Water vapor is a large component of most flue gas resulting from the combustion of fossil fuels. This forms the main part of the smoke that can be seen pouring out of the incinerator and furnace flues, which is a result of the water vapor coming into contact with cool air in the atmosphere to form a cloud. Large plants typically generate a large amount of flue gas, and this makes it important for them to have a flue gas treatment in place.
flue gas treatment!
Activated carbon has strong adsorption properties and is effective in treating low-concentration, high-volume organic waste gases. It is widely used in waste gas treatment in coating, rubber, plastic, chemical, solvent recovery and other industries.
When there is no water vapor and oxygen in the flue gas, physical adsorption occurs first, and the adsorption amount is small. When activated carbon contains water vapor and oxygen, it is a process where physical and chemical methods exist together. Physical adsorption occurs first, and then the SO2 adsorbed on the surface of the activated carbon is catalytically oxidized into SO3 in the presence of water and oxygen. SO3 reacts with water vapor to generate sulfuric acid. The sulfuric acid adsorbed by the activated carbon can be washed out by water, or SO2 can be released by heating, thus Regenerate activated carbon. The adsorption capacity of sulfur dioxide increases.
When the surface of activated carbon comes into contact with gas, it can attract gas molecules, concentrate them and keep them on the surface of activated carbon. This phenomenon is called adsorption. The adsorption capacity of the activated carbon surface is used to bring the exhaust gas into contact with the activated carbon. The pollutants in the exhaust gas are adsorbed on the surface of the activated carbon to separate them from the gas mixture to achieve the purpose of purification. After the exhaust gas passes through the air filter to remove tiny suspended particles, it enters the top of the adsorption tank. After being adsorbed by the activated carbon in the tank, harmful components are removed. The gas that meets the emission standards is discharged outdoors through the fan.