Advantages of venturi injectors in the desulfurization of low-volume acidic gases

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For the desulfurization of acidic gases with low volumes and toxic gases in some sectors of the chemical industry, choosing the appropriate absorption equipment not only ensures compliance with environmental regulations but also guarantees safe production; moreover, such equipment requires less investment and occupies less space. Firstly, the venturi injector utilizes the venturi effect to enable high-speed turbulent mixing between the acidic gas and the driving medium (desulfurization liquid) within the throat, resulting in rapid surface mass transfer and thus an efficient desulfurization process. Our company once used a Venturi injector in a petrochemical project to treat acidic gas with an H2S concentration of 71.65 wt%; as a result, the H2S concentration in the purified gas was reduced to below 10 ppm, ensuring optimal desulfurization effects. Secondly, for the desulfurization of gases with low flow rates and acidic properties, a properly designed venturi injector enables the desulfurization fluid to draw the acidic gases from a slightly positive pressure state to a negative pressure state. For the desulfurization of acidic gases containing toxic substances, operating under negative pressure ensures that the risk of acidic gases escaping in the event of pipeline or equipment failures is minimized, thereby protecting the safety of on-site workers. Finally, compared to traditional tower-based spray absorption or bubble absorption methods, the venturi injector has a smaller size, which helps to reduce investment costs; it can also be installed in combination with other equipment, resulting in less floor space required.