| 离子液体水溶液吸收模拟烟气中SO_2 |
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| 引用本文： | 王晨星,任树行,侯玉翠,王一鸣,田士东,吴卫泽.离子液体水溶液吸收模拟烟气中SO_2[J].化工学报,2015,66(Z1):222-227. |
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| 作者姓名： | 王晨星 任树行 侯玉翠 王一鸣 田士东 吴卫泽 |
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| 作者单位： | 1.北京化工大学化学工程学院, 化工资源有效利用国家重点实验室, 北京 100029;2.太原师范学院化学系, 山西 太原 030031;3.中南大学化学化工学院, 湖南 长沙 410083 |
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| 基金项目： | 国家自然科学基金项目(21176020 |
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| 摘 要： | 建立了一套放大脱硫装置,利用该装置研究了乙醇胺乳酸盐(MEA]L)水溶液在不同条件下吸收SO2的性能,确定出了较优的实验条件,并在该条件下进行吸收-解吸SO2循环实验。研究结果表明:烟气中SO2的去除率随MEA]L中水分的增加而增加;SO2的去除率随着气液比的减少而增加,在气液比为420,SO2浓度为2850~14280 mg·m-3范围内时,出口烟气中SO2浓度均小于285 mg·m-3,满足排放标准;烟气中的CO2对MEA]L水溶液吸收SO2没有影响;利用蒸汽对富液进行解吸再生,解吸后的贫液可以继续使用,并且仍具有很高的SO2去除率。
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| 关 键 词： | 离子液体 乙醇胺乳酸盐 水溶液 吸收 解吸 SO2 |
| 收稿时间： | 2015-02-02 |
| 修稿时间： | 2015-02-12 |
Absorption of SO2 in simulated flue gas with aqueous ionic liquid solutions |
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| WANG Chenxing,REN Shuhang,HOU Yucui,WANG Yiming,TIAN Shidong,WU Weize.Absorption of SO2 in simulated flue gas with aqueous ionic liquid solutions[J].Journal of Chemical Industry and Engineering(China),2015,66(Z1):222-227. |
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| Authors: | WANG Chenxing REN Shuhang HOU Yucui WANG Yiming TIAN Shidong WU Weize |
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| Affiliation: | 1.State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2.Department of Chemistry, Taiyuan Normal University, Taiyuan 030031, Shanxi, China;3.College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China |
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| Abstract: | A large-scale desulfurization device was designed and made to investigate the absorption of SO2 in simulated flue gas with aqueous ethanolamine lactate (MEA]L) solutions at different conditions. The optimum conditions were found and circulatory SO2 absorption-desorption experiment was performed on the device. The results showed that the SO2 removal rate increased with an increase of water content of aqueous MEA]L solution. The SO2 removal rate increased with a decrease of the molar ratio of gas to liquid absorbent G/L). When G/L is 420 and the concentrations of SO2 in flue gas are 2850-14280 mg·m-3, the output concentration of SO2 was under 285 mg·m-3, which conforms to the standard of flue gas issue. CO2 in the flue gas had no effect on absorption SO2 with aqueous MEA]L solutions. Furthermore, the solution after SO2 absorption could be regenerated by stream stripping, and reused for absorbing SO2 with a high removal rate. |
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| Keywords: | ionic liquids ethanolamine lactate aqueous solution absorption desorption SO2 |
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