CO<sub>2</sub> REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER

LUO Peicheng; JIAO Zhen; WANG Zhixiang; ZHANG Zhibing

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CO₂ REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER

更新时间：2025-12-10

- CO₂ REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER
- CIESC Journal Issue 6, Pages: 824-829(2003)
- 作者机构：
  
  1. 南京大学化工系
  2. 中国药科大学化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 2003，
  
  Published：25 June 2003
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LUO Peicheng, JIAO Zhen, WANG Zhixiang, et al. CO₂ REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER[J]. CIESC Journal, 2003, (6): 824-829.
DOI：

LUO Peicheng, JIAO Zhen, WANG Zhixiang, et al. CO₂ REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER[J]. CIESC Journal, 2003, (6): 824-829. DOI：

摘要

在填料吸收塔中研究了NaOH水溶液(0.30～0.97 kmol·m-3)以及有机胺水溶液(MEA：0.10～0.50 kmol·m-3；DEA：0.10～0.50 kmol·m-3)吸收空气中微量CO2的过程，并建立了该过程的数学模型，用NaOH水溶液吸收空气中微量CO2的实验结果估算了填料的有效相界面积av，并根据有效相界面积以及有机胺水溶液吸收CO2的实验结果预测了MEA、DEA水溶液吸收空气中微量CO2的总反应速率常数(kov)exp.由实验结果计算得到的总反应速率常数与数学模型能很好地吻合.

Abstract

A packed tower was used to investigate the removal of CO2 from polluted air using aqueous alkaline solutions. Experiments were conducted with NaOH concentration 0.30—0.97 kmol·m-3

MEA concentration 0.02—0.50 kmol·m-3 and DEA concentration 0.10-0.50 kmol·m-3 at 25 ℃. A mathematical model based on chemical absorption was proposed. The effective gas-liquid interfacial area (av) was calculated from the results of CO2 absorption into aqueous solutions of sodium hydroxide. For the solutions of MEA and DEA

the overall reaction rate constant (kov)expwas obtained from the results of the experiments and av calculated from NaOH-CO2 system. The overall reaction rate of MEA is much higher than that of DEA. The predictions of the theoretical model were compared with the experimental data and results from literature. Both the experimental data and the results from literatures were in good agreement with the model predictions.

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CO2 REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER

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CO₂ REMOVAL FROM POLLUTED AIR USING ALKALINE SOLUTIONS IN PACKED TOWER