在常压双固定床反应器上研究电石渣高温协同捕集CO2/SO2过程的循环碳酸化-硫酸化特性.研究表明,随着停留时间增加,电石渣硫酸化转化率缓慢上升,碳酸化转化率则先上升而后由于直接硫酸化而下降,第1次循环在30min时取得最高碳酸化转化率,为0.66.随循环次数和SO2浓度增加,碳酸化转化率减小,硫酸化转化率增加.缩短停留时间可提高电石渣循环碳酸化性能,从而提高电石渣协同捕集CO2/SO2性能.当反应气氛中无SO2时,电石渣循环碳酸化性能优于石灰石;而当SO2浓度为0.2％时,电石渣与石灰石的循环碳酸化性能并无明显差异,但电石渣硫酸化性能更优,总钙利用率更高,具有更好的循环碳酸化-硫酸化性能.
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