【摘 要】
：
基于湿法烟气脱硫试验装置,对含不同质量分数飞灰的4种石膏浆液的浸出特性、吸收速率、pH值、传质阻力和SO32-氧化等关键参数进行了研究。试验表明：浆液pH值变化分为pH值快速
【机 构】
：
南京工程学院环境工程系,东南大学能源与环境学院
论文部分内容阅读
基于湿法烟气脱硫试验装置,对含不同质量分数飞灰的4种石膏浆液的浸出特性、吸收速率、pH值、传质阻力和SO32-氧化等关键参数进行了研究。试验表明：浆液pH值变化分为pH值快速下降和平稳下降2个阶段;Mn2＋浸出量为Fe3＋的9倍,Mn2＋与HSO3-形成络合物诱发催化反应加速SO2吸收;初期pH值较高,飞灰对SO2吸收速率的影响小于1.5%,pH=5时,飞灰浸出液中可溶性Mn2＋增多,Mn2＋催化效果更加明显,SO2吸收速率最多增加6%;浆液吸收过程由液相阻力控制,气相阻力在总阻力的比重小于38%;Mn2＋的质量浓度越大,对SO32-的催化氧化作用越强。
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