Regeneration performance and absorption/desorption mechanism of tetramethylammonium glycinate aqueous solution for carbon dioxide capture
Regeneration performance and absorption/desorption mechanism of tetramethylammonium glycinate aqueous solution for carbon dioxide capture
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甘氨酸四甲基铵水溶液二氧化碳捕集再生性能及吸解吸机理
DOI：
10.1016/j.ijggc.2014.12.021
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发表时间：
2015-03
影响因子：
3.9
通讯作者：
Zhou Zuo Ming
中科院分区：
文献类型：
--
作者：
Guo Bing Song;Jing Guo Hua;Zhou Zuo Ming
摘要甘氨酸四甲基铵（[n1111][Gly]）水溶液对co2具有良好的吸附能力。本文对其解吸性能和机理进行了研究。为了研究饱和co2 [n1111][Gly]水溶液的再生性能，采用常压热再生技术，将再生温度从373 ~ 403 K， [n1111][Gly]浓度从5% ~ 30%变化。研究了再生循环对再生效率的影响。采用13c核磁共振（NMR）和傅立叶变换红外光谱（IR）研究了CO 2与[n1111][Gly]水溶液的相互作用。结果表明，在研究范围内，15%[n1111][Gly]水溶液的解吸效果优于其他浓度。在373 ~ 383 K范围内，随着再生温度的升高，饱和co2溶液的再生效率逐渐提高。当温度高于383 K时，对再生效率影响不大，但仍能提高co2的解吸率。在4次再生循环中，再生效率和脱附率略有下降。在CO 2的捕获和释放过程中，[n1111][Gly]仅通过封存和提供质子起到短暂的稳定碳酸盐/碳酸氢盐的作用。co2解吸动力学可以用Weibull方程表示：η t/η∞= 1−e−(t m/β)。
Abstract Tetramethylammonium glycinate ([N 1111][Gly]) aqueous solution has a good absorption ability for CO 2 capture. In this paper, the desorption performance and mechanism were investigated. To explore the regeneration performance of the CO 2-saturated [N 1111][Gly] aqueous solution, thermal regeneration under atmospheric pressure was used by varying the regeneration temperature from 373 to 403 K and the [N 1111][Gly] concentration from 5% to 30%. The effect of regeneration cycles on regeneration efficiency was also determined. The interaction between CO 2 and [N 1111][Gly] aqueous solution was explored by 13 C Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared Spectrometry (IR). Results showed that 15%[N 1111][Gly] aqueous solution had more preferable desorption performance than the other concentrations in the range of the investigation. The regeneration efficiency of the CO 2-saturated solution increased with increasing regeneration temperature from 373 to 383 K. When the temperature was above 383 K, it had little influence on the regeneration efficiency but still enhanced the desorption rate of CO 2. The regeneration efficiency and the desorption rate decreased slightly during four regeneration cycles. In CO 2 capture and release process,[N 1111][Gly] only played a transitory role to stabilize the carbonate/bicarbonate by sequestering and providing protons. CO 2 desorption kinetics could be expressed by Weibull equation: η t/η∞= 1− e−(t m/β).
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DOI：
10.1016/j.compchemeng.2011.09.012
发表时间：
2012-04
期刊：
Comput. Chem. Eng.
影响因子：
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作者：
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通讯作者：
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发表时间：
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期刊：
The Journal of Chemical Thermodynamics
影响因子：
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