The principle of vacuum degassing is mainly based on Henry's law, which states that at a constant temperature, the solubility of a gas in a liquid is proportional to its partial pressure above the liquid surface.
The principle of vacuum degassing is mainly based on Henry's law, which states that at a constant temperature, the solubility of a gas in a liquid is proportional to its partial pressure above the liquid surface. In other words, the solubility of a gas decreases as the pressure decreases. Therefore, by reducing the pressure above the liquid in a vacuum environment, the gas dissolved in the liquid can be released.
In actual operation, the vacuum degasser places the liquid in a closed container and uses a vacuum pump to extract the air in the container, thereby reducing the pressure above the liquid. Under low pressure, the gas in the liquid will gradually escape and be absorbed and discharged by the vacuum system. This process can be repeated until the gas content in the liquid is reduced to the desired level.
In addition, since the solubility of gas is also related to temperature, a heating step may be combined with the vacuum degassing process to further improve the degassing efficiency.
Vacuum degassing technology is widely used in many fields, including the chemical, electronic, pharmaceutical, medical, and food industries. It is utilized to produce high-quality chemicals, electronic components, distilled water, and deionized water products to ensure their purity and stability.
For example, in water treatment, vacuum degassing can remove dissolved gases such as oxygen and carbon dioxide in water to prevent pipeline corrosion and improve heat exchange efficiency. In the laboratory, vacuum degassing is used to remove gases from solvents to ensure the accuracy of experimental results.
In steel production, vacuum degassing is an important secondary refining process in the steelmaking process, which is used to remove hydrogen, nitrogen, and other gases from molten steel to improve the cleanliness of steel.
