Absorption of Low Concentration Sulfur Dioxide Usi

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• Affiliation of Author(s):化学与化工学院
• Journal:过程工程学报
• Key Words:中文关键字：hollow fiber; liquid-containing membrane; citric a，英文关键字：hollow fiber; liquid-containing membrane; citric a
• Abstract:The absorption of low concentration SO2 in flue gas by using the module of liquid-containing microporous membrane which is made up of hollow fiber and citric acid-sodium citrate buffer solution has been studied. The absorption efficiency of hydrophilic and hydrophobic membranes by using the concept of dynamic contact-angle is mainly studied. The influences on absorption efficiency from the absorption time, the flow velocity of gas phase, the SO2 concentration of gas phase, the air pressure, the citrate concentration ,the pH value of the solution as well as the generation of sulfate radical in absorption solution were examined. The following results were obtained: the hydrophobic hollow fiber membrane is better than hydrophilic membrane; the absorption efficiency is decreased with the increase of absorption time, gas-phase flow velocity, gas-phase SO2 concentration and air pressure; the absorption rate and the capacity of SO2 can be improved by increasing the citrate concentration; the absorption efficiency can be improved by increasing the pH value of citrate solution; the concentration of SO42- in absorption solution increases linearly with the absorption time at a rate around 0.192 g/（L?h）.
• Note:薛娟琴
• First Author:xuejuanqin
• Indexed by:Journal paper
• Volume:卷：7
• Issue:期：3
• Page Number:页：483-489
• Translation or Not:no
• Date of Publication:2007-06-01