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首页> 外文期刊>Environmental Science & Technology >Adsorption Separation of Carbon Dioxide from Flue Gas by a Molecularly Imprinted Adsorbent
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Adsorption Separation of Carbon Dioxide from Flue Gas by a Molecularly Imprinted Adsorbent

机译：分子印迹吸附剂从烟气中吸附分离二氧化碳

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摘要

CO_2 separation by molecularly imprinted adsorbent from coal-fired flue gas after desulfurization system has been studied. The adsorbent was synthesized by molecular imprinted technique, using ethanedioic acid, acrylamide, and ethylene glycol dimethacrylate as the template, functional monomer, and cross-linker, respectively. According to the conditions of coal-fired flue gas, the influencing factors, including adsorption temperature, desorption temperature, gas flow rate, and concentrations of CO_2, H_2O, O_2, SO_2, and NO, were studied by fixed bed breakthrough experiments. The experimental conditions were optimized to gain the best adsorption performance and reduce unnecessary energy consumption in future practical use. The optimized adsorption temperature, desorption temperature, concentrations of CO_2, and gas flow rate are 60 ℃, 80 ℃, 13%, and 170 mL/min, respectively, which correspond to conditions of practical flue gases to the most extent. The CO_2 adsorption performance was nearly unaffected by H_2O, O_2, and NO in the flue gas, and was promoted by SO_2 within the emission limit stipulated in the Chinese emission standards of air pollutants for a thermal power plant. The maximum CO_2 adsorption capacity, 0.57 mmol/g, was obtained under the optimized experimental conditions, and the SO_2 concentration was 150 mg/m~3. The influence mechanisms of H_2O, O_2, SO_2, and NO on CO_2 adsorption capacity were investigated by infrared spectroscopic analysis.
机译：研究了脱硫后燃煤烟气中分子印迹吸附剂对CO_2的分离作用。通过分子印迹技术，分别以乙二酸，丙烯酰胺和乙二醇二甲基丙烯酸酯为模板，功能单体和交联剂合成吸附剂。根据燃煤烟气的条件，通过固定床穿透实验研究了吸附温度，脱附温度，气体流速以及CO_2，H_2O，O_2，SO_2和NO的浓度等影响因素。优化了实验条件以获得最佳的吸附性能，并减少了未来实际使用中不必要的能耗。优化的吸附温度，解吸温度，CO_2浓度和气体流速分别为60℃，80℃，13％和170 mL / min，这在最大程度上对应于实际烟气的条件。烟气中的H_2O，O_2和NO对CO_2的吸附性能几乎不受其影响，而在火电厂空气污染物排放标准规定的排放限值范围内，SO_2促进了CO_2的吸附性能。在最佳实验条件下，最大CO_2吸附量为0.57mmol / g，SO_2浓度为150mg / m〜3。通过红外光谱研究了H_2O，O_2，SO_2和NO对CO_2吸附能力的影响机理。

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  • 来源
    《Environmental Science & Technology》 |2014年第3期|1601-1608|共8页
  • 作者

    Yi Zhao; Yanmei Shen; Guoyi Ma; Rongjie Hao;

  • 作者单位

    School of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, People's Republic of China;

    Shenhua Guohua (Beijing) Electric Power Research Institute Co., Ltd., Beijing 100025, People's Republic of China;

    State Grid Jibei Electric Power Co., Ltd. Maintenance Branch, Beijing 100053, People's Republic of China;

    School of Environmental Science & Engineering, North China Electric Power University, Baoding 071003, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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