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醇胺离子液体对烟气硫的高效脱除

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亓雁飞, 许倩倩, 李润浩, 朱洪堂, 孙德帅. 醇胺离子液体对烟气硫的高效脱除[J]. 环境工程学报, 2018, 12(11): 3131-3138. doi: 10.12030/j.cjee.201806066
引用本文: 亓雁飞, 许倩倩, 李润浩, 朱洪堂, 孙德帅. 醇胺离子液体对烟气硫的高效脱除[J]. 环境工程学报, 2018, 12(11): 3131-3138. doi: 10.12030/j.cjee.201806066
shu
QI Yanfei, XU Qianqian, LI Runhao, ZHU Hongtang, SUN Deshuai. High efficient flue gas desulfurization by alkanolamine ionic liquid[J]. Chinese Journal of Environmental Engineering, 2018, 12(11): 3131-3138. doi: 10.12030/j.cjee.201806066
Citation: QI Yanfei, XU Qianqian, LI Runhao, ZHU Hongtang, SUN Deshuai. High efficient flue gas desulfurization by alkanolamine ionic liquid[J]. Chinese Journal of Environmental Engineering, 2018, 12(11): 3131-3138. doi: 10.12030/j.cjee.201806066
shu

醇胺离子液体对烟气硫的高效脱除

  • 1.

    青岛大学化学化工学院，青岛 266071

  • 基金项目:

    国家自然科学基金资助项目（21206080）

    山东省重点研发项目（2015GSF117026）

    山东省自然科学基金资助项目（ZR2017MB024）

High efficient flue gas desulfurization by alkanolamine ionic liquid

  • 1.

    College of Chemical Science & Engineering, Qingdao University, Qingdao 266071, China

  • Fund Project:

  • 摘要: 燃煤烟气中的SO2对人体健康和生态环境危害很大，传统的除硫装置大都存在二次污染。离子液体作为新型吸收剂有着广泛的应用前景。制备柠檬酸三乙醇胺离子液体作为脱硫剂，在模拟烟气条件下对SO2的吸收性能进行研究。结果表明：柠檬酸三乙醇胺离子液体具有高效脱硫性能，在70 min时脱硫率仍能达到80%以上；温度升高不利于脱硫过程的进行；而SO2浓度增加，离子液体的吸收量增加；离子液体的解吸工艺简单，在90 ℃下加热80 min可完全解吸，再生性能良好。柠檬酸三乙醇胺离子液体对SO2的吸收主要以化学吸收为主，同时伴有物理吸收过程，吸收摩尔比达到3.38～3.68 mol·mol-1。
    Abstract: SO2 in coal-fired flue gas is harmful to human health and ecological environment. Most of the conventional sulfur removal devices can generate the secondary pollution. Ionic liquids, as a new adsorbate, have a broad application prospect. In this study, triethanolamine citrate ionic liquid was synthesized as a desulfurizer to absorb SO2 from simulated flue gas. The results showed that triethanolamine citrate ionic liquid has a good performance on SO2 removal, and the desulfuration rate could reach more than 80% at 70 min. High temperature discouraged the removal process, while the increment of SO2 concentration facilitated the process. The regeneration of ionic liquid was very easy, and it could desorb completely at 90 ℃ for 80 min. The dominated mechanism for SO2 removal by triethanolamine citrate ionic liquid was chemical adsorption, accompanying with physical adsorption, and the corresponding absorption molar ratio could reach 3.38 ~ 3.68 mol·mol-1.
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  • 刊出日期:  2018-11-12

醇胺离子液体对烟气硫的高效脱除

  • 1. 青岛大学化学化工学院，青岛 266071
基金项目:

国家自然科学基金资助项目（21206080）

山东省重点研发项目（2015GSF117026）

山东省自然科学基金资助项目（ZR2017MB024）

摘要: 燃煤烟气中的SO2对人体健康和生态环境危害很大，传统的除硫装置大都存在二次污染。离子液体作为新型吸收剂有着广泛的应用前景。制备柠檬酸三乙醇胺离子液体作为脱硫剂，在模拟烟气条件下对SO2的吸收性能进行研究。结果表明：柠檬酸三乙醇胺离子液体具有高效脱硫性能，在70 min时脱硫率仍能达到80%以上；温度升高不利于脱硫过程的进行；而SO2浓度增加，离子液体的吸收量增加；离子液体的解吸工艺简单，在90 ℃下加热80 min可完全解吸，再生性能良好。柠檬酸三乙醇胺离子液体对SO2的吸收主要以化学吸收为主，同时伴有物理吸收过程，吸收摩尔比达到3.38～3.68 mol·mol-1。

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