Hydrodynamic characteristics of dual-impeller configurations in a multiple-phase stirred tank
文献类型：会议论文
| 作者 | Wang, Tao1; Yu, Gengzhi1; Yong, Yumei1; Yang, Chao1,2; Mao, Zai-Sha1 |
| 出版日期 | 2010-02-03 |
| 关键词 | Liquids - Turbine components - Flow of gases - Tanks (containers) - Impellers - Mixing - Suspensions (fluids) - Turbomachine blades |
| 卷号 | 49 |
| 期号 | 3 |
| DOI | 10.1021/ie9006886 |
| 页码 | 1001-1009 |
| 英文摘要 | Experiments are carried out in a baffled flat-bottom stirred tank to test five dual-impeller configurations, including a new type of impeller, alternate blade disk turbine (ABDT). Power consumptions in gas-liquid, liquid-solid, and gas-liquid-solid systems are determined by the shaft-torque method. It is found that the configuration with an axial impeller consumes less energy than that with a radial one in all multiple-phase systems. The correlations between power input and gas flow rate or solid concentration are also discussed. Power number reaches a limit with the increase of Reynolds number in liquid-solid systems. Aeration is proved to be harmful to solid suspension. Mixing time and solid particle concentration are measured by the electric conductivity method and Powder Voidmeter PC-6, respectively. The mixing modes (axial and radial) are proposed in the light of impeller types and flow patterns. The experimental results show that the mixing time of the double radial impeller configuration is the shortest, while the double axial impeller combination performs worst. Judging from the axial solid particle concentration distribution and overall suspension uniformity, the combination taking pitched blade turbine downflow (PBTD) as the lower impeller achieves the best solid suspension. 漏 2010 American Chemical Society. |
| 资助机构 | American Chemical Society |
| 学科主题 | Reynolds Number |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59494]  |
| 作者单位 | 1.Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2.Jiangsu Marine Resources Development Research Institute, Lianyungang 222005, China |
| 推荐引用方式 GB/T 7714 | Wang, Tao,Yu, Gengzhi,Yong, Yumei,et al. Hydrodynamic characteristics of dual-impeller configurations in a multiple-phase stirred tank[C]. 见:. |
入库方式： OAI收割
来源：过程工程研究所
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