| 不同钙基CO_2吸收剂的循环特性研究 |
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| 引用本文： | 乔春珍,王宝利,肖云汉.不同钙基CO_2吸收剂的循环特性研究[J].燃料化学学报,2010,38(4):478-482. |
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| 作者姓名： | 乔春珍 王宝利 肖云汉 |
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| 作者单位： | 1.College of Architecture, North China University of Technology, Beijing 100144, China;
2.Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | 国家高技术研究发展计划，北方工业大学博士启动基金 |
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| 摘 要： | 对石灰石和白云石这两种不同钙基CO2吸收剂的循环特性进行了实验研究,考察了晶格结构不同的钙基CO2吸收剂,随着循环次数的增加,吸收剂的表面形态、分子孔径及比表面积等微观结构的变化,分析了影响吸收剂不同衰减趋势的主要原因。结果表明,白云石基B-CaO吸收剂循环吸收容量稳定性明显高于石灰石基C-CaO吸收剂;白云石中含有的MgO起到原子骨架的作用,减少吸收过程中由于生成碳酸钙产品层引起的孔堵塞,从而有效的保持了吸收剂的活性。
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| 关 键 词： | CO2吸收剂 循环特性 微观结构 |
| 收稿时间： | 2009-10-23 |
Characteristics of different Ca-based CO2 absorbents during cyclic calcination-carbonation |
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| QIAO Chun-zhen,WANG Bao-li,XIAO Yun-han.Characteristics of different Ca-based CO2 absorbents during cyclic calcination-carbonation[J].Journal of Fuel Chemistry and Technology,2010,38(4):478-482. |
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| Authors: | QIAO Chun-zhen WANG Bao-li XIAO Yun-han |
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| Abstract: | The characteristics of different Ca-based CO2 absorbents in the process of cyclic calcination-carbonation were investigated. The variation of microstructure, pore radius and specific surface area of the absorbent with different crystal lattice configurations during the cycles was researched, and the main reason that affects the reactivity of the absorbent was analyzed. The results show that the stability of CO2 capture capacity of the calcined dolomite is higher than that of the calcined limestone. Dolomite includes MgO that can change the atomic framework of the absorbent, in turn reduce the plugging of the pore due to the formation of CaCO3 and keep the reactivity of absorbent. |
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| Keywords: | CO2 absorbent cyclic characteristics microstructure |
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