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Comment Processing & Handling

Gas Sparging

By Chemical Engineering |

Sparging refers to the process of injecting a gas through a diffuser into a liquid phase. It is used in both physical and chemical process applications. In physical process applications, the gas is used to either dissolve gas into liquid (such as aeration and carbonation) or to remove contaminants from the liquid phase (such as oxygen stripping, volatile organic compound stripping and water stripping). In chemical process applications, sparging is used to dissolve reactant gases into a liquid phase for further reaction (such as in hydrogenation, oxidation, fermentation and ozonation reactions). The following information discusses some of the considerations required for setting up a sparging operation and selecting sparging equipment. Spargers (diffusers) come in various sizes, configurations and materials of construction. They are chosen based on the design and operating conditions of the process. Metal spargers are used in high-temperature, corrosive or oxidizing conditions, whereas ceramic spargers are sufficient for mild conditions. The type and configuration of the sparger used depend on factors such as whether a process is continuous or batch, gas flowrate, tank size, mechanical agitation, operating pressure and temperature.  Mass-transfer…
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