...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Multi-Impurity Adsorption Model for Modeling Crystal Purity and Shape Evolution during Crystallization Processes in Impure Media
【24h】

Multi-Impurity Adsorption Model for Modeling Crystal Purity and Shape Evolution during Crystallization Processes in Impure Media

机译：不纯介质中结晶过程中晶体纯度和形状演变的多杂质吸附模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The impurity effect on the crystal properties, such as particle size and shape distribution, is significant, having significant impact on the downstream processes as well as on the product effectiveness. Currently very few studies exist that provide a quantitative model to describe crystal purity resulting from crystallization processes in impure media, and none to take into account the simultaneous effect of multiple impurities. Hence, the understanding of the effect of multiple impurities on crystallization process is important in order to obtain the desired product properties. Batch crystallization of potassium dihydrogen phosphate from aqueous solution in the presence of impurities was investigated experimentally by using an online particle vision and measurement tool with real-time image analysis. A mathematical model to describe the crystal purity and aspect ratio is proposed based on a morphological population balance equation including primary nucleation, growth of characteristic faces and multisite, competitive adsorption of impurities. The model parameters were identified and validated using crystallization experiments in mixtures of two impurities with variable composition. The developed and validated model can be an efficient tool for the investigation of crystallization processes in impure media with multiple impurities. The model can also serve as an effective tool for process and product design or optimization.
机译：杂质对晶体性能（如粒度和形状分布）的影响非常显着，对下游工艺以及产品有效性具有重大影响。当前，很少有研究提供定量模型来描述由不纯介质中的结晶过程产生的晶体纯度，并且没有考虑到多种杂质的同时作用的研究。因此，为了获得所需的产品性能，了解多种杂质对结晶过程的影响很重要。通过使用具有实时图像分析功能的在线粒子视觉和测量工具，实验研究了在杂质存在下从水溶液中磷酸二氢钾的批量结晶过程。基于形态种群平衡方程，提出了描述晶体纯度和纵横比的数学模型，该方程包括一次成核，特征面的生长和多位点，杂质的竞争性吸附。使用结晶实验在两种具有可变组成的杂质的混合物中鉴定并验证了模型参数。开发和验证的模型可以成为研究含多种杂质的不纯介质中结晶过程的有效工具。该模型还可以用作过程和产品设计或优化的有效工具。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号