|
|||||
|
|
| 用数值模拟方法分析混合和导流筒对搅拌槽中沉淀硫酸钡的影响 | |
| 引用本文： | 王正,毛在砂, ,杨超,沈湘黔. 用数值模拟方法分析混合和导流筒对搅拌槽中沉淀硫酸钡的影响[J]. 中国化学工程学报, 2006, 14(6): 713-722. DOI: 10.1016/S1004-9541(07)60001-9 |
| 作者姓名： | 王正 毛在砂 杨超 沈湘黔 |
| 作者单位： | Institute of Process Engineering Chinese Academy of Sciences，Institute of Process Engineering，Chinese Academy of Sciences，Institute of Process Engineering，Chinese Academy of Sciences，Changsha Research Institute of Mining and Metallurgy，Beijing 100080，China，Beijing 100080，China，Beijing 100080，China，Changsha 410012，China |
| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
| 摘 要： | 1 INTRODUCTION Precipitation of sparingly soluble salts is an im- portant operation widely adopted in the production of functional materials, catalyst, protein, pharmaceutical product and pigment. By precipitation, two aqueous streams containing respective reactants are mixed in a precipitator, and the sparingly soluble salt forms as result of chemical reaction if the concentration of produced salt exceeds its solubility. The quality of the final product obtained by precipitation is strong… |
| 关 键 词： | mixing precipitation stirred tank computational fluid dynamics (CFD) numerical simulation supersaturation |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | |
Computational Fluid Dynamics Approach to the Effect of Mixing and Draft Tube on the Precipitation of Barium Sulfate in a Continuous Stirred Tank |
|
| Zheng WANG, Zaisha MAO, Chao YANG,Xiangqian SHEN. Computational Fluid Dynamics Approach to the Effect of Mixing and Draft Tube on the Precipitation of Barium Sulfate in a Continuous Stirred Tank[J]. Chinese Journal of Chemical Engineering, 2006, 14(6): 713-722. DOI: 10.1016/S1004-9541(07)60001-9 | |
| Authors: | Zheng WANG Zaisha MAO Chao YANG Xiangqian SHEN |
| Affiliation: | aInstitute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China bChangsha Research Institute of Mining and Metallurgy, Changsha 410012, China |
| Abstract: | The effect of mixing on the precipitation of barium sulfate in a continuous stirred tank is simulated numerically with different feeding location, feed concentration, impeller speed and residence time through solving the standard momentum and mass transport equations in combination with the moment equations for crystal population balance. The numerical method was validated with the literature data. The simulation results including the distribution of the local supersaturation ratio distribution in the precipitator, mean crystal size and coefficient of variation under different operating conditions compared well with experimental data in the literature. The effect of the presence of a draft tube on precipitation were also investigated, and it is suggested that the installation of a draft tube increased the mean crystal size, in general agreement with experimental work in the literature. |
| Keywords: | mixing precipitation stirred tank computational fluid dynamics (CFD) numerical simulation supersaturation |
| 本文献已被 CNKI 万方数据 ScienceDirect 等数据库收录！ | |
| 点击此处可从《中国化学工程学报》浏览原始摘要信息 | |
| 点击此处可从《中国化学工程学报》下载免费的PDF全文 | |