| 膜电解法再生碳酸钾脱碳溶液(英文) |
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| 引用本文： | 刘娜,赵兴雷,王运东,费维扬. 膜电解法再生碳酸钾脱碳溶液(英文)[J]. 中国化学工程学报, 2010, 18(4): 538-543 |
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| 作者姓名： | 刘娜 赵兴雷 王运东 费维扬 |
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| 作者单位： | State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | the Specialized Research Fund for Doctoral Programme of Higher Education of MOE;the National Natural Science Foundation of China |
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| 摘 要： | In this work, the regeneration mechanism of potassium carbonate solution after absorption of CO2 using ion-exchange membrane electrolysis was presented. The solutions of potassium carbonate (K2CO3) and potassium bicarbonate (KHCO3) were used to simulate the solution after absorbing CO2. Experiments were carried out at various electrodes, temperatures and current densities. The results indicate that the membrane electrolysis can increase concentration ratio of K2CO3 and KHCO3, and achieve 100% conversion. In this process, not only CO2 is desorbed from carbonate solution, but also hydrogen, as a byproduct, is generated at the cathode, which is the main contributor to reduce energy consumption. Thus, the membrane electrolysis is valuable in the regeneration of the K2CO3 absorbent.
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| 关 键 词： | membrane electrolysis Benfield regeneration carbon dioxide |
| 收稿时间： | 2009-12-08 |
| 修稿时间： | 2009-12-8 |
Electrolytic regeneration of decarbonising potassium carbonate solution |
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| LIU Na,ZHAO Xinglei,WANG Yundong,FEI Weiyang. Electrolytic regeneration of decarbonising potassium carbonate solution[J]. Chinese Journal of Chemical Engineering, 2010, 18(4): 538-543 |
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| Authors: | LIU Na ZHAO Xinglei WANG Yundong FEI Weiyang |
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| Affiliation: | State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | In this work, the regeneration mechanism of potassium carbonate solution after absorption of CO2 using ion-exchange membrane electrolysis was presented. The solutions of potassium carbonate (K2CO3) and potassium bicarbonate (KHCO3) were used to simulate the solution after absorbing CO2. Experiments were carried out at various electrodes, temperatures and current densities. The results indicate that the membrane electrolysis can increase concentration ratio of K2CO3 and KHCO3, and achieve 100% conversion. In this process, not only CO2 is desorbed from carbonate solution, but also hydrogen, as a byproduct, is generated at the cathode, which is the main contributor to reduce energy consumption. Thus, the membrane electrolysis is valuable in the regeneration of the K2CO3 absorbent. |
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| Keywords: | membrane electrolysis Benfield regeneration carbon dioxide |
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