CIESC Journal ›› 2013, Vol. 64 ›› Issue (6): 2232-2239.DOI: 10.3969/j.issn.0438-1157.2013.06.044

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CO2 carbonation sequestration by cycling of ammonium

PAN Danping, GUO Yanpeng, CHEN Hao, QU Rumin, YANG Linjun   

  1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, Jiangsu, China
  • Received:2012-12-19 Revised:2013-01-29 Online:2013-06-05 Published:2013-06-05
  • Supported by:

    supported by the National Natural Science Foundation of China(51176034).

铵基循环碳酸化固定CO2

潘丹萍, 郭彦鹏, 陈浩, 瞿如敏, 杨林军   

  1. 东南大学能源热转换及其过程测控教育部重点实验室,江苏 南京 210096
  • 通讯作者: 杨林军
  • 作者简介:潘丹萍(1989—),女,硕士研究生。
  • 基金资助:

    国家自然科学基金项目(51176034)。

Abstract: Aqueous ammonia is one of reagents absorbing CO2 and is of vast development potential.In this paper the reaction between decarbonization rich liquid and carbide slug is used for assisting CO2 storage and recycle of aqueous ammonia at normal temperature and pressure.Using aqueous NH4HCO3 as rich liquid, pH and conductivity change during carbonation process were measured,and XRD, SEM and TGA employed for analysis of carbonation reaction products.Meanwhile, compared with aqueous ammonia having same concentration, carbonation reaction solution was also used to absorb CO2.The results show that the carbonation reaction can be accomplished in short time, and the higher temperature and liquid-solid ratio are, the faster the reaction rate is.Besides, ultrasonics can make carbide slug particles smaller, and carbonation reaction solution can be recycled as its property is similar to aqueous ammonia of the same concentration.

Key words: ammonium-based recycle, CO2, carbonation sequestration, aqueous ammonia, carbide slug

关键词: 铵基循环, CO2, 碳酸化固定, 氨水, 电石渣

CLC Number: