| 硼酸盐活化效应对碳酸钾溶液吸收CO_2的影响 | |
| 郭东方 ; 郜时旺 ; 蔡铭 ; 陈健 ; 费维扬 ; GUO Dongfang ; GAO Shiwang ; CAI Ming ; CHEN Jian ; FEI Weiyang | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | CO2捕集 碳酸钾 硼酸盐 湿壁柱 停流光谱–pH指示剂技术 CO2 capture potassium carbonate borate wetted-wall column stopped-flow pH indicator technique TQ131.13 |
| 其他题名 | Effect of Borate Catalysis on CO_2 Absorption by Potassium Carbonate Solutions |
| 中文摘要 | 活化碳酸钾溶液吸收法是实现燃煤电厂烟气中CO2大规模捕集的颇具潜力的减排技术之一。文中采用停流光谱–pH指示剂技术和气液接触式湿壁柱实验装置考察了硼酸盐对CO2水合的活化效应及其对碳酸钾溶液吸收CO2的影响。研究结果表明:硼酸盐可以活化CO2转化为HCO3?,其活化机制类似于碳酸酐酶催化CO2水合机制;在碳酸钾溶液中加入硼酸盐可以明显提高CO2在溶液中的富集速率和吸收过程的增强因子。考虑离子强度的影响,在液膜控制条件下,文中建立的基于液相硼活化机制的模型可以很好的预测硼酸盐活化的碳酸钾法对CO2的实际吸收效果,为工艺过程设计和操作条件优化提供借鉴参考。; Promoted potassium carbonate solutions have the potential for large-scale CO2 capture from coal-based power stations. In this paper, the borate-catalyzed CO2hydration and its effect on potassium carbonate solutions using stopped-flow pH indicator technique and wetted-wall column method was presented. The results show that borate can catalyze the conversion of CO2 into HCO3 ? via the same fundamental mechanism as the enzyme carbonic anhydrase, and the addition of borate into potassium carbonate solution increases CO2 absorption rate and enhancement factor. Under the condition of liquid-film controlled processes and ion strength effect Considered, the proposed borate catalysis can be used to predict CO2 absorption of borate promoted potassium carbonate solutions well, and will be very useful for separation processes design and operation parameters optimization. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144039]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 郭东方,郜时旺,蔡铭,等. 硼酸盐活化效应对碳酸钾溶液吸收CO_2的影响[J],2016, 2016. |
| APA | 郭东方.,郜时旺.,蔡铭.,陈健.,费维扬.,...&FEI Weiyang.(2016).硼酸盐活化效应对碳酸钾溶液吸收CO_2的影响.. |
| MLA | 郭东方,et al."硼酸盐活化效应对碳酸钾溶液吸收CO_2的影响".(2016). |
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