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钙基吸附剂捕集生物质燃气中的二氧化碳

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胡辉, 邹妍晖, 张海旭, 程晖, 李芳. 钙基吸附剂捕集生物质燃气中的二氧化碳[J]. 环境工程学报, 2013, 7(2): 663-667.
引用本文: 胡辉, 邹妍晖, 张海旭, 程晖, 李芳. 钙基吸附剂捕集生物质燃气中的二氧化碳[J]. 环境工程学报, 2013, 7(2): 663-667.
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Hu Hui, Zou Yanhui, Zhang Haixu, Cheng Hui, Li Fang. Capturing carbon dioxide in biomass gas by calcium-based sorbents[J]. Chinese Journal of Environmental Engineering, 2013, 7(2): 663-667.
Citation: Hu Hui, Zou Yanhui, Zhang Haixu, Cheng Hui, Li Fang. Capturing carbon dioxide in biomass gas by calcium-based sorbents[J]. Chinese Journal of Environmental Engineering, 2013, 7(2): 663-667.
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钙基吸附剂捕集生物质燃气中的二氧化碳

  • 1.

    华中科技大学环境科学与工程学院,武汉 430074

  • 基金项目:

    国家科技支撑计划(2012BAC18B02-01)

  • 中图分类号: X701.7

Capturing carbon dioxide in biomass gas by calcium-based sorbents

  • 1.

    School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

  • Fund Project:

  • 摘要: 生物质热解燃气中CO2的捕集,是提高燃气热值和实现碳减排的关键问题之一。为利用生物质热解燃气温度偏高的特点,拟通过化学吸附方法,捕集燃气中高浓度的CO2。为此,利用不同钙基前驱物制备了系列钙基固体吸附剂,系列钙基固体吸附剂对CO2的单次吸附和循环吸附实验结果表明,含钙和镁氧化物混合物的吸附剂具有较稳定的循环吸附特性以及较大的吸附负荷。孔结构特性分析表明,适宜于CO2吸附的有效孔径范围可能为小于4 nm。因此,可以通过对天然白云石的改性获得合适孔径的钙镁基固体吸附剂,达到有效捕集生物质燃气中CO2的目的。
    Abstract: The capture of carbon dioxide in biomass pyrolysis gas is one of the key issues to improve the calorific value of the gas and achieve the goal of carbon reduction. In this study, the high concentration carbon dioxide in the gas was successfully captured by chemical adsorption method, in the beneficial condition of the high temperature of the biomass pyrolysis gas. Thus, series of calcium-based solid sorbents were prepared by different calcium-based precursors. The experiments of series of calcium-based solid sorbents on carbon dioxide single adsorption and cycle adsorption indicated that the sorbent which was mixed with calcium and magnesium had better stability of cycle adsorption and adsorption load. The analysis of the structure of the hole showed that the effective pore size was less than 4 nm. Therefore, calcium and magnesium-based solid sorbent with suitable pore size could be obtained by modifying the natural dolomite, reaching the goal of capturing carbon dioxide in biomass gas.
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  • [1] 张全国, 孔书轩, 刘圣勇,等. 生物质燃气净化技术及其装置研究. 中国沼气, 2000,18(1):43-45 Zhang Q. G., Kong S. X., Liu S. Y. Study of the purifier of bimass gasification system. China Biogas, 2000,18(1):43-45(in Chinese)
    [2] 陈飞, 刘晓勤. 活性炭变压吸附脱除二氧化碳的性能研究. 天然气化工, 2007,32(6):37-41 Cheng F., Liu X. Q. The performances of active carbons for the carbon dioxide removal by PSA. Natural Gas Chemical Industry, 2007,32(6):37-41(in Chinese)
    [3] 钟战铁. 有机胺溶液吸收二氧化碳基础研究. 杭州: 浙江大学硕士学位论文, 2002 Zhong Z. T. Fundamental study on carbon dioxide absorption into amines. Hangzhou: Master’s Degree Thesis of Zhejiang University, 2002(in Chinese)
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  • 收稿日期:  2012-06-20
  • 刊出日期:  2013-02-02

钙基吸附剂捕集生物质燃气中的二氧化碳

  • 1. 华中科技大学环境科学与工程学院,武汉 430074
  • 收稿日期:  2012-06-20
基金项目:

国家科技支撑计划(2012BAC18B02-01)

摘要: 生物质热解燃气中CO2的捕集,是提高燃气热值和实现碳减排的关键问题之一。为利用生物质热解燃气温度偏高的特点,拟通过化学吸附方法,捕集燃气中高浓度的CO2。为此,利用不同钙基前驱物制备了系列钙基固体吸附剂,系列钙基固体吸附剂对CO2的单次吸附和循环吸附实验结果表明,含钙和镁氧化物混合物的吸附剂具有较稳定的循环吸附特性以及较大的吸附负荷。孔结构特性分析表明,适宜于CO2吸附的有效孔径范围可能为小于4 nm。因此,可以通过对天然白云石的改性获得合适孔径的钙镁基固体吸附剂,达到有效捕集生物质燃气中CO2的目的。

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