Experimental investigation on calcination/sulphation characteristics of limestone modified by acetic acid solution in O2/CO2 atmosphere
Experimental investigation on calcination/sulphation characteristics of limestone modified by acetic acid solution in O2/CO2 atmosphere
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DOI：
10.1016/j.proci.2010.07.010
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Weifang Wu;Changsui Zhao;Qingzhao Li;Wu Zhou
中科院分区：
文献类型：
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作者：
Weifang Wu;Changsui Zhao;Qingzhao Li;Wu Zhou
研究了醋酸溶液改性石灰石对O2/ co2气氛下煅烧/硫化性能的影响。采用XRD分析方法对磺化产物的组成进行了测定。结果表明，乙酸钙（CA）的硫化转化率远高于石灰石。在一定温度下，CA的硫化转化率达到峰值。随着so2浓度的增加，反应开始时速率加快，在硫化反应过程中CA的硫化转化率高于原料石灰石。醋酸浓度越高，CA的硫酸盐转化率越高，但不同石灰石的增加幅度不同。XRD分析结果也证实了在煅烧/硫化过程中CA的钙转化率优于原生石灰石。
The effection of limestone modified by acetic acid solution on the calcination/sulphation characteristics was investigated in O2/CO2atmosphere. The components of the sulphation product were determined by means of XRD analysis. The results show that the sulphation conversion of calcium acetate (CA) is much higher than that of limestone. There is a certain temperature at which the sulphation conversion of CA reaches its peak value. The reaction rate is accelerating at the beginning and the sulphation conversion of CA is higher than that of raw limestone during the sulphation reaction process with increasing SO2concentration. The higher concentration of acetic acid makes higher sulphation conversion of CA, but different limestones have different increasing amplitudes. The results of the XRD analysis also verify the superior calcium conversion of CA over that of raw limestone during calcination/sulphation process.