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首页> 外文期刊>Environmental Science & Technology >Advanced Monoethanolamine Absorption Using Sulfolane as a Phase Splitter for CO_2 Capture
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Advanced Monoethanolamine Absorption Using Sulfolane as a Phase Splitter for CO_2 Capture

机译：环丁砜作为相分离剂用于CO_2捕集的高级单乙醇胺吸收

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摘要

A novel phase splitter, namely, sulfolane, was proposed to advance the traditional monoethanolamine (MEA) absorption technology for CO2 capture by simultaneously promoting the absorption rate and lowering heat duty. The phase-splitting phenomenon was observed after the CO2 loading level had exceeded 0.73 mol CO2/L, thereby generating a CO2-rich MEA upper layer and a lower layer containing sulfolane. Sulfolane facilitated CO2 absorption because of its strong affinity with acid gases, which resulted in an absorption rate 2.7 times higher than that of the conventional MEA process. The process simulation using Aspen Plus indicated that the regeneration heat with the MEA/sulfolane mixture as a solvent substantially decreased to 2.67 GJ/t-CO2, which was 31% lower than that of the conventional MEA process (3.85 GJ/t-CO2). Moreover, the sensible heat and vaporization heat of MEA/sulfolane were markedly decreased by 62.4% and 47.9%, which could be ascribed to the decreased stripping volume and relatively high CO2 partial pressure caused by liquid-liquid phase separation. The proposed system is proved to be a promising candidate for the advancement of CO2 capture techniques with high CO2 absorption capacity, rapid absorption rate, and low-energy penalty.
机译：提出了一种新型的分相器，即环丁砜，以通过同时提高吸收速率和降低热负荷的方式来提高传统的单乙醇胺（MEA）吸收CO2的吸收技术。在CO 2负载量超过0.73mol CO 2 / L之后观察到相分离现象，从而产生了富含CO 2的MEA上层和包含环丁砜的下层。环丁砜具有很强的与酸性气体的亲和力，从而促进了CO2的吸收，吸收率是传统MEA工艺的2.7倍。使用Aspen Plus进行的过程模拟表明，以MEA /环丁砜混合物为溶剂的再生热量显着降低至2.67 GJ / t-CO2，这比常规MEA方法（3.85 GJ / t-CO2）降低了31％。 。此外，MEA /环丁砜的显热和汽化热分别降低了62.4％和47.9％，这可以归因于液-液相分离引起的汽提体积减少和较高的CO2分压。事实证明，所提出的系统是发展具有高CO2吸收能力，快速吸收速率和低能耗的CO2捕获技术的有希望的候选者。

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  • 来源
    《Environmental Science & Technology》 |2018年第24期|14556-14563|共8页
  • 作者

    Wang Lidong; Zhang Yifeng; Wang Rujie; Li Qiangwei; Zhang Shihan; Li Meng; Liu Jie; Chen Bo;

  • 作者单位

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China|North China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China|North China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China|North China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Peoples R China;

    Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Zhejiang, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China|North China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Peoples R China;

    North China Elect Power Univ, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China|North China Elect Power Univ, Sch Environm Sci & Engn, Baoding 071003, Peoples R China;

    SINOPEC, Dalian Res Inst Petr & Petrochem, Dalian 116045, Peoples R 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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