| 活性炭粒子对K2CO3溶液中CO2化学吸收的强化 |
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| 引用本文： | 卢素敏,马友光,朱春英,沈树华. 活性炭粒子对K2CO3溶液中CO2化学吸收的强化[J]. 中国化学工程学报, 2007, 15(6): 842-846. DOI: 10.1016/S1004-9541(08)60012-9 |
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| 作者姓名： | 卢素敏 马友光 朱春英 沈树华 |
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| 作者单位： | School of Chemical Engineering and Technology,State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （No.20176036）. |
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| 摘 要： | The enhancement of chemical absorption of CO2 by K2CO3/H2O absorbents in the presence of activated carbon （AC） particles was investigated. The results show that the gas absorption rates can be enhanced significantly in the presence of AC particles, and the maximum enhancement factor 3.7 was observed at low stirring intensities. The enhancement factor increased rapidly with the solid loading during the initial period of absorption and then be- came mild gradually to a maximum value. Both the liquid-solid contact area and the probability of solid particles residing at the gas-liquid interface decreased with the increase of the particle size, leading to a negative effect on the enhancement of mass transfer. The influence of the particles on gas absorption decreased with the reaction rate. The stirring speed changed the interfacial coverage and mass transfer rate on the liquid side and consequently affected the mass transfer between the gas and liquid phases; the enhancement factor decreased with the stirring intensity. A heterogeneous two-zone model was proposed for predicting the enhancement factor and the calculated results agreed well with the experimental data.
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| 关 键 词： | 化学吸收 促进因素 质量转移 二氧化碳 活性碳颗粒 碳酸钾水溶液 |
| 收稿时间： | 2007-06-06 |
| 修稿时间： | 2007-09-24 |
The enhancement of CO2 chemical absorption by K2CO3 aqueous solution in the presence of activated carbon particles |
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| LU Sumin,MA Youguang,ZHU Chunying,SHEN Shuhua. The enhancement of CO2 chemical absorption by K2CO3 aqueous solution in the presence of activated carbon particles[J]. Chinese Journal of Chemical Engineering, 2007, 15(6): 842-846. DOI: 10.1016/S1004-9541(08)60012-9 |
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| Authors: | LU Sumin MA Youguang ZHU Chunying SHEN Shuhua |
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| Affiliation: | aSchool of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The enhancement of chemical absorption of CO2 by K2CO3/H2O absorbents in the presence of activated carbon (AC) particles was investigated. The results show that the gas absorption rates can be enhanced significantly in the presence of AC particles,and the maximum enhancement factor 3.7 was observed at low stirring intensities.The enhancement factor increased rapidly with the solid loading during the initial period of absorption and then became mild gradually to a maximum value. Both the liquid-solid contact area and the probability of solid particles residing at the gas-liquid interface decreased with the increase of the particle size,leading to a negative effect on the enhancement of mass transfer. The influence of the particles on gas absorption decreased with the reaction rate. The stirring speed changed the interfacial coverage and mass transfer rate on the liquid side and consequently affected the mass transfer between the gas and liquid phases; the enhancement factor decreased with the stirring intensity. A heterogeneous two-zone model was proposed for predicting the enhancement factor and the calculated results agreed well with the experimental data. |
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| Keywords: | chemical absorption enhancement factor mass transfer activated carbon particle |
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