What is the principle and function of stripping?
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To separate the acidic gases from wastewater, steam is used to strip the water from below upward, thereby separating the acidic gases. I would like to ask what determines the amount of steam required for this process? What is its principle?
By reducing pressure, increasing temperature, and decreasing the proportion of the component in the gas phase that needs to be stripped, it is naturally stripped away
If one has studied the principles of distillation, it becomes easier to understand. A stripping tower is the lower part of a distillation tower; it is a distillation mode used when it is necessary to control the purity of the heavier components only, without paying much attention to the purity of the lighter component product. In your case, the purity of the water coming out from the bottom of the tower can be controlled, meaning that the content of harmful components remains below a certain threshold; whereas the harmful gases coming out from the upper part need to be removed, and there are no requirements regarding their purity. As for the amount of steam required, there is a detailed calculation process involved; however, it’s not necessary for those who are not designers to know how to perform such calculations. It’s sufficient to adjust the amount of gas supplied and find through experimentation the appropriate level.
The theoretical basis for stripping is Henry’s law: at a constant temperature, when phase equilibrium is reached between the gas and liquid phases, the partial pressure of the dissolved gas in the gas phase is proportional to its concentration in the liquid phase. Therefore, in actual production, air or water vapor can be used as the carrier gas to reduce the partial pressure of the solute in the gas phase, thereby causing the solute to precipitate from the solution, leaving a lean solution that can be reused. This is what is known as gas lift
The theoretical basis for stripping is Henry’s law: at a constant temperature, when phase equilibrium is reached between the gas and liquid phases, the partial pressure of the dissolved gas in the gas phase is proportional to its concentration in the liquid phase. Therefore, in actual production, air or water vapor can be used as the carrier gas to reduce the partial pressure of the solute in the gas phase, thereby causing the solute to precipitate from the solution, leaving a lean solution that can be reused. This is what is known as stripping science*
Agree with the person above; we need to study seriously* and master the basic principles of production.