超重力碳化法制备碳酸氢锂实验研究  

Study on preparation of lithium bicarbonate by hypergravity carbonation method

作　　者：霍闪 邓小川[1] 卿彬菊[1] 朱朝梁[1] 温现明[1] 史一飞[1] 邵斐[1] 黄泽洲[1,2] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院大学

出　　处：《无机盐工业》2015年第10期27-30,共4页Inorganic Chemicals Industry

基　　金：青海省科技厅应用基础研究项目(2014-ZJ-708;2011-Z-706)

摘　　要：采用超重力碳化法制备碳酸氢锂,并通过调节物料浓度、气体流量、旋转填料床频率及进料速率4个实验因素进行单因素实验。结果表明:随着物料浓度的升高,碳化速率先增加后减小,反应时间先减小后增加,碳化液中锂离子浓度却一直升高。增加气体流量、旋转填料床频率、进料速率,碳化速率也增加,反应时间相应缩短,而碳化液中锂离子浓度均呈现逐渐升高的趋势。超重力碳化法可以显著提高传质速率,缩短反应时间,提高物料和气体利用率,强化反应过程,增加产物浓度。The experiments were carried out by adjusting the four experimental factors including concentration, gas flow rate, frequency of rotating packed bed, and the feed rate, in order to prepare lithium bicarbonate by hypergravity carbona- tion method. Resuhs showed that with the increase of material concentration, the carbonation rate increased first and then decreased, whereas the reaction time decreased first then increased, the concentration of lithium ion has been gradually in- creasing. With the increase of gas flow rate, rotating packed bed frequency and feed rate, the carbonation rate increased, the reaction time shortened correspondingly, and the concentration of lithium ion showed a gradually increasing trend in the car- bonizing liquid. Hypergravity carbonation method can significantly increase the mass transfer rate, shorten the reaction time, improve the utilization rate of material and gas, strengthen the reaction process, and increase the concentration of product.

关 键 词：超重力 碳化法 二氧化碳 传质 多相反应器 

分 类 号：TQ131.11[化学工程—无机化工]