马晓春,梁芳,邓向瑞

• 1:新疆维吾尔自治区计量测试研究院
• 2:中国计量科学研究院

摘要(Abstract)：

新疆准东煤储量丰富且碱土金属元素含量较高，其燃烧产生的高钙粉煤灰是优良的CO2封存原料。采用常压直接湿法碳酸化法，针对烟气流量、温度、固液比等关键参数，对高钙粉煤灰碳酸化展开研究与寻优分析；构建碳酸化动力学模型，确定关键因素与控制步骤，同时评估该工艺脱氯及去除重金属的性能。研究发现：增大烟气流量、降低固液比能有效提升单位质量粉煤灰的碳酸化度；在快速碳酸化阶段（0～20 min），低温虽利于提升碳酸化度，但效果不显著；快速碳酸化区粉煤灰反应主要受固膜扩散控制，相关系数为0.917 37，活化能为10.36 kJ/mol；经响应曲面法优化最佳工况参数为温度57.1℃、烟气流量2.86 L/min、液固比200.0 g/L，此时实际碳酸化度平均值达30.2%；按此参数处理后的粉煤灰氯含量符合JC/T 409—2016标准中配筋制品要求，对砷、铜等典型重金属脱除率分别达88.4%、55.6%等，表明该工艺具备一定脱毒能力。因此，准东高钙粉煤灰的常压湿法碳酸化具有一定的应用潜力。

关键词(KeyWords)： 粉煤灰;湿法碳酸化;动力学;工艺寻优;重金属

Abstract:

Keywords:

基金项目(Foundation): 新疆维吾尔自治区自然科学计划项目（202203003）~~

作者(Author): 马晓春,梁芳,邓向瑞

DOI: 10.19666/j.rlfd.202501031

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