Deaerator and carbon dioxide remover
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Baidu describes the carbon dioxide remover as follows: \"Water enters the carbon removal device from the top, is distributed via distribution equipment, passes through the packing layer, and then enters the water tank from the bottom.\" In the decarburizer, due to the obstruction provided by the packing, the water flowing from above is dispersed into many small streams or droplets. The air blown in from the bottom has a very large contact area with the water, and the partial pressure of carbon dioxide in the air is low; as a result, the carbon dioxide dissolved in the water is quickly removed. By using air blower carbon removal, the carbon dioxide content can be reduced to below 5 mg/L. Simply put, the amount of gas dissolved in water is proportional to the partial pressure of the air in contact with it; this principle is similar to that behind the atmospheric deaerators used in power plants. ” What I want to ask is that when the small droplets flowing down from above come into full contact with air, they may dissolve due to the low partial pressure of carbon dioxide; but with a larger contact area, more air will surely enter the droplets. . Where did I go wrong in my thinking: L. .
Are there any experts?? Aren’t you one of them?? :(
“What I want to ask is that when the small droplets flowing down from above come into full contact with air, they may evaporate due to the low partial pressure; but with a larger contact area, more air will surely enter the droplets. . ”Components of air: Nitrogen (N2) accounts for about 78%, oxygen (O2) accounts for about 21%, noble gases account for about 0.939%, and carbon dioxide (CO2) accounts for about 0.031% ； The solubility of oxygen and nitrogen in air in water is extremely low; regardless of the size of the contact surface, the amount of air that can dissolve in water does not exceed the solubility limits of nitrogen and oxygen under those conditions ； The proportion of carbon dioxide in the air is also extremely low: 0.031%. Even if all of this carbon dioxide (CO2) were to dissolve in water, its amount would still be far less than the amount of carbon dioxide (CO2) that is removed from the water by the air.
Then I would like to ask you, where does this carbon dioxide in the water come from? According to the information I have, the water comes from a reservoir; does the water in that reservoir contain a lot of carbon dioxide?
Carbon dioxide has a high solubility in water; under normal conditions, 1 volume of carbon dioxide gas can dissolve in 1 volume of water； Air aeration for carbon dioxide removal follows Dalton’s law of partial pressures, which is the same principle as steam stripping used in our chemical production processes.
Got it, thank you so much! ! !