[1]赵士林,刘 浩,夏 雯,等.钙基吸收剂循环煅烧/碳酸化反应特性[J].南京师范大学学报(工程技术版),2013,13(04):035.
　Zhao Shilin,Liu Hao,Xia Wen,et al.Characteristics of Cyclic Calcination/Carbonation Reaction of Ca-based Absorbent[J].Journal of Nanjing Normal University(Engineering and Technology),2013,13(04):035.
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钙基吸收剂循环煅烧/碳酸化反应特性
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
13卷
期数:
2013年04期
页码:
035
栏目:
出版日期:
2013-12-31

文章信息/Info

Title:
Characteristics of Cyclic Calcination/Carbonation Reaction of Ca-based Absorbent
作者:
赵士林; 刘 浩; 夏 雯; 吴 昊; 杨宏旻
南京师范大学能源与机械工程学院,江苏 南京 210042
Author(s):
Zhao Shilin; Liu Hao; Xia Wen; Wu Hao; Yang Hongmin
School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China
关键词:
钙基吸收剂; 循环反应特性; 转化率
Keywords:
Ca-based sorbent; cyclic reactive characteristics; conversion rate
分类号:
TQ534.9
文献标志码:
A
摘要:
针对循环次数、吸收剂粒径的大小、碳酸化气氛中CO2的浓度、煅烧气氛中CO2的浓度和水蒸气的浓度对于钙基吸收剂循环煅烧/碳酸化反应特性的影响,在钙基吸收剂循环煅烧/碳酸化反应实验装置上进行实验研究.结果表明:钙基吸收剂碳酸化阶段的转化率在循环煅烧/碳酸化反应中存在衰减现象,10次循环反应之后,转化率会从72%降至30%以下; 吸收剂碳酸化阶段的转化率随其粒径的增大而减小; 碳酸化气氛中CO2浓度的提高,会抑制钙基吸收剂碳酸化阶段转化率的衰减; 煅烧气氛中CO2浓度的增加会加速钙基吸收剂碳酸化阶段转化率的衰减,导致循环捕集CO2性能锐减; 水蒸气能降低固体产物扩散的能量壁垒,延长碳酸化反应时间,提高转化率.
Abstract:
Aiming at the effects of cycle number,absorbent particle size,CO2 concentration in calcinations,carbonation atmosphere and water vapour concentration on characteristics of cyclic calcination/carbonation reaction of Ca-based absorbent,they are investigated experimentally on a lab-scale setup.The results show that the carbonation conversion of Ca-based absorbent decreases from 72% to 30% after 10 cycles in the calcination/carbonation reaction.The small particle size can improve the carbonation conversion of absorbent.The increase of CO2 concentration in carbonation atmosphere can restrain the decrease of conversion rate in carbonation process.The increase of CO2 concentration in calcination atmosphere can accelerate the decrease of the conversion rate in carbonation conversion process,which results in the decrease of cycle performance for CO2 capture.Water vapour reduces the energy barrier of the diffusion across the solid production,which prolongs carbonation reaction time and increases conversion rate.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-07-07.
基金项目:国家自然科学基金(50976049)、江苏省自然科学基金(BK2011788).
通讯联系人:杨宏旻,博士,教授,研究方向:燃烧污染物控制理论与技术研究.E-mail:yanghongmin@njnu.edu.cn.
更新日期/Last Update: 2013-12-30