ISL OpenIR  > 青海盐湖研究所知识仓储
Kinetic study on carbonation of crude Li2CO3 with CO2-water solutions ina slurry bubble column reactor
Yi, Wen-Tao; Yan, Chun-Yan
2011
发表期刊KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷号28期号:3页码:703-709
摘要Investigations were conducted to purify crude Li2CO3 via direct carbonation with CO2-water solutions at atmospheric pressure. The experiments were carried out in a slurry bubble column reactor with 0.05 in inner diameter and 1.0 m height. Parameters that may affect the dissolution of Li2CO3 in the CO2-water solutions such as CO2-bubble perforation diameter, CO2 partial pressure, CO, gas flow rate; Li2CO3 particle size, solid concentration in the slurry, reaction temperature, slurry height in the column and so on were investigated. It was found that the increases of CO2 partial pressure, and CO2 flow rate were favorable to the dissolution of Li2CO3 which had the opposite effects with Li2CO3 particle size, solid concentration, slurry height in the column and temperature. On the other hand, in order to get insight into the mechanism of the refining process, reaction kinetics was studied. The results showed that the kinetics of the carbonation process can be properly represented by 1-3(1-X)(2/3)+2(1-X)=kt+b, and the rate-determining step of this process under the conditions studied was product layer diffusion. Finally, the apparent activation energy of the carbonation reaction was obtained by calculation. This study will provide theoretical basis for the reactor design and the optimization of the process operation. Investigations were conducted to purify crude Li2CO3 via direct carbonation with CO2-water solutions at atmospheric pressure. The experiments were carried out in a slurry bubble column reactor with 0.05 in inner diameter and 1.0 m height. Parameters that may affect the dissolution of Li2CO3 in the CO2-water solutions such as CO2-bubble perforation diameter, CO2 partial pressure, CO, gas flow rate; Li2CO3 particle size, solid concentration in the slurry, reaction temperature, slurry height in the column and so on were investigated. It was found that the increases of CO2 partial pressure, and CO2 flow rate were favorable to the dissolution of Li2CO3 which had the opposite effects with Li2CO3 particle size, solid concentration, slurry height in the column and temperature. On the other hand, in order to get insight into the mechanism of the refining process, reaction kinetics was studied. The results showed that the kinetics of the carbonation process can be properly represented by 1-3(1-X)(2/3)+2(1-X)=kt+b, and the rate-determining step of this process under the conditions studied was product layer diffusion. Finally, the apparent activation energy of the carbonation reaction was obtained by calculation. This study will provide theoretical basis for the reactor design and the optimization of the process operation.
关键词Carbonation Kinetics Slurry Bubble Column Reactor Crude Li2co3
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/1882
专题青海盐湖研究所知识仓储
推荐引用方式
GB/T 7714
Yi, Wen-Tao,Yan, Chun-Yan. Kinetic study on carbonation of crude Li2CO3 with CO2-water solutions ina slurry bubble column reactor[J]. KOREAN JOURNAL OF CHEMICAL ENGINEERING,2011,28(3):703-709.
APA Yi, Wen-Tao,&Yan, Chun-Yan.(2011).Kinetic study on carbonation of crude Li2CO3 with CO2-water solutions ina slurry bubble column reactor.KOREAN JOURNAL OF CHEMICAL ENGINEERING,28(3),703-709.
MLA Yi, Wen-Tao,et al."Kinetic study on carbonation of crude Li2CO3 with CO2-water solutions ina slurry bubble column reactor".KOREAN JOURNAL OF CHEMICAL ENGINEERING 28.3(2011):703-709.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
10.1007_s11814-010-0(398KB) 开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yi, Wen-Tao]的文章
[Yan, Chun-Yan]的文章
百度学术
百度学术中相似的文章
[Yi, Wen-Tao]的文章
[Yan, Chun-Yan]的文章
必应学术
必应学术中相似的文章
[Yi, Wen-Tao]的文章
[Yan, Chun-Yan]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 10.1007_s11814-010-0405-2[1].pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。