CFD-PBE simulation of premixed continuous precipitation incorporating nucleation, growth and aggregation in a stirred tank with multi-class method
文献类型：期刊论文
| 作者 | Cheng, Jingcai1,2; Yang, Chao1,2; Mao, Zai-Sha1 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2012-01-22 |
| 卷号 | 68期号:1页码:469-480 |
| 关键词 | Precipitation Simulation Population balance Crystal size distribution Multi-class method Turbulence |
| ISSN号 | 0009-2509 |
| 通讯作者 | Yang, C |
| 英文摘要 | The continuous precipitation of BaSO(4) with a premixed feed in a stirred tank is simulated. The population balance equation (PBE) is closed with the multi-class method. The effects of aggregation, feeding concentration, agitation speed, mean residence time, the crystal size distribution (CSD) at different locations and the net birth rate of each size bin due to aggregation are numerically studied. Size bin number tests show that at least 36 bins are needed for the size range in this work to achieve acceptable accuracy in both cases with and without aggregation. The predicted CSD is in good agreement with the reported experimental measurement. Narrower CSD and higher peak value are obtained with higher feed concentration. Aggregation broadens the CSD, decreases the peak value, and makes the CSD shift toward a larger size. The mean size L(32) of crystals decreases significantly with increasing the inlet concentration, which is consistent with the experiments and model predictions reported in the literature. The effects of residence time and agitation speed on CSD and L(32) are limited, which is very different from those in unpremixed cases. The CSD at the inlet region differs greatly from the outlet and near impeller regions, both in shape and value. A bimodal distribution appears around the inlet under some conditions. The net birth rate of the ith size bin due to aggregation increases dramatically with the inlet concentration. The detailed information, such as the bimodal distribution in a certain location under certain conditions and the aggregation rate of each size bin, could be useful for the precise and sophisticated control of precipitation in some novel processes like nano-particles production. (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | POPULATION-BALANCE-EQUATIONS ; FEED SEMIBATCH PRECIPITATION ; BARIUM-SULFATE ; QUADRATURE METHOD ; TURBULENT PRECIPITATION ; SIZE DISTRIBUTION ; PDF METHOD ; CRYSTALLIZATION ; MOMENTS ; AGGLOMERATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000296876400042 |
| 公开日期 | 2013-10-29 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4356]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China 2.Jiangsu Marine Resources Dev Res Inst, Lianyungang 222005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Jingcai,Yang, Chao,Mao, Zai-Sha. CFD-PBE simulation of premixed continuous precipitation incorporating nucleation, growth and aggregation in a stirred tank with multi-class method[J]. CHEMICAL ENGINEERING SCIENCE,2012,68(1):469-480. |
| APA | Cheng, Jingcai,Yang, Chao,&Mao, Zai-Sha.(2012).CFD-PBE simulation of premixed continuous precipitation incorporating nucleation, growth and aggregation in a stirred tank with multi-class method.CHEMICAL ENGINEERING SCIENCE,68(1),469-480. |
| MLA | Cheng, Jingcai,et al."CFD-PBE simulation of premixed continuous precipitation incorporating nucleation, growth and aggregation in a stirred tank with multi-class method".CHEMICAL ENGINEERING SCIENCE 68.1(2012):469-480. |
入库方式： OAI收割
来源：过程工程研究所
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