摘要
以海水调制拜耳法赤泥作为脱硫剂开展烟气湿法脱硫试验,对比分析了赤泥海水浆、赤泥纯水浆和单纯海水的脱硫效果,并考察了液固比、液气比和温度对赤泥海水脱硫和赤泥脱碱效果的影响。在优选液固比9、液气比8.0L/m3和温度60℃的工艺条件下,赤泥海水脱硫平均脱硫效率达到99.62%,赤泥脱碱效率达到85.06%,脱碱后赤泥满足Ⅰ类工业固废标准,赤泥海水脱硫液与新鲜海水混合曝气后满足GB 18486—2001污水海洋处置标准要求。赤泥与海水混合用于烟气脱硫,提高了二氧化硫吸收效率,为沿海氧化铝企业赤泥处置利用提供一条新途径。
Experimental study on wet flue gas desulfurization was carried out by using Bayer red mud mixed with seawater as desulfurizer.Desulfurization effects of red mud seawater slurry,red mud pure water slurry and pure seawater were contrastively analyzed.Effects of L/S,ratio of gas to liquid and temperature on desulfurization were investigated.The results show that average desulfurization efficiency is 99.62%and alkali removal efficiency of red mud is 85.06%under the optimum conditions including L/S of 9,ratio of gas to liquid of 8.0 L/m3,and reaction temperature of 60℃.After desulfurization,red mud can meet the classⅠindustrial solid waste standard,and red mud seawater desulfurization solution can meet the requirements of GB 18486—2001 marine sewage disposal standard after mixed aeration with fresh seawater.Red mud mixed with seawater used for flue gas desulfurization,which improves absorption efficiency of sulfur dioxide,provides a new way for red mud disposal and utilization of coastal alumina enterprises.
作者
刘中凯
闫琨
康泽双
和新忠
LIU Zhong-kai;YAN Kun;KANG Ze-shuang;HE Xin-zhong(Zhengzhou Nonferrous Metals Research Institute Co.,Ltd.,CHALCO,Zhengzhou 450041,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2021年第9期104-110,共7页
Nonferrous Metals（Extractive Metallurgy)
基金
国家重点研发计划项目(2020YFC1908802)。
关键词
拜耳法赤泥
海水
脱硫效率
脱碱效率
Bayer red mud
seawater
desulfurization efficiency
dealkalization efficiency
