Sintering of Limestone in Calcination/Carbonation Cycles
Sintering of Limestone in Calcination/Carbonation Cycles
复制标题
石灰石在煅烧/碳化循环中的烧结
DOI:
10.1021/ie502069d
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发表时间:
2014-10
期刊:
影响因子:
--
通讯作者:
Yewen Tan
中科院分区:
文献类型:
--
作者:
Chunbo Wang;Xing Zhou;Lufei Jia;Yewen Tan
A custom-built experimental system that can measure sample weight changes at high temperatures is used to study the effect of operating parameters (sintering time, atmosphere, temperature, particle size, etc.) on the sintering of CaO under Ca-looping process conditions. The pore structures of the sintered CaO samples are measured by N2 absorption/desorption method. The results show that both the rate of carbonation reaction and the final carbonation ratio of the CaO decrease as the sintering duration is increased, especially during the chemical reaction controlled stage. The carbonation of nascent CaO is degraded if steam was added in the calcination process. The sintering of CaO is accelerated by higher temperatures and that will lead to the lower carbonation conversion ratios for the CaO. The highest carbonation ratio is not obtained for the smallest particles (75–97 μm) but for the middle sized particles (150–250 μm) for all the CaO samples for any sintering durations. The biggest CaO particles (355–45...
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