化工学报2011，Vol.62Issue(6)：1693-1700,8.DOI:10.3969/j.issn.0438-1157.2011.06.033
石灰石和白云石高温循环脱除CO2过程分析
Process analysis of cyclic CO2 capture using limestone and dolomite at high temperature
摘要
Abstract
The main system parameters, including long-term cyclic carbonation conversion, average carbonation conversion, CO2 capture efficiency and energy requirement for a calciner in the two kinds of typical calcination atmospheres, including pure N2 and high concentration CO2 were investigated by experiment and calculation during the cyclic calcination/carbonation process for CO2 capture using limestone and dolomite. The results showed that fresh sorbent flow ratio and recycled sorbent flow ratio had direct effect on average carbonation conversion, CO2 capture efficiency and energy requirement for the calciner. For the same fresh sorbent and recycled sorbent flow ratios, dolomite exhibited greater average carbonation conversion and CO2 capture efficiency than limestone. At CO2 capture efficiency of 95 ％ and in the same calcination atmosphere, at least 82 kJ · (mol CO2)-1 was saved in the minimum energy requirement for the calciner using dolomite than that using limestone. Compared with the results in pure N2 calcination atmosphere, the two sorbents both showed a decrease in average carbonation conversion and CO2 capture efficiency for the sorbents and exhibited an increase in minimum energy requirement for the calciner in high concentration CO2 atmosphere, however, the changes of these main system parameters for dolomite were less than those for limestone.关键词
石灰石/白云石/煅烧/碳酸化/CO2捕集Key words
limestone/ dolomite/ calcination/carbonation/ CO2 capture分类
化学化工引用本文复制引用
李英杰,孙荣岳,刘红玲,赵建立,韩奎华,路春美..石灰石和白云石高温循环脱除CO2过程分析[J].化工学报,2011,62(6):1693-1700,8.基金项目
国家自然科学基金项目(51006064) （51006064）
中国博士后科学基金项目(20090461205) （20090461205）
山东大学自主创新基金项目(2009GN042). （2009GN042）
