...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Flow and mixing characteristics of a retreat curve impeller in a conical-based vessel
【24h】

Flow and mixing characteristics of a retreat curve impeller in a conical-based vessel

机译：撤退的流动和混合特性曲线叶轮conical-based船

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

Many of the chemical reactor vessels used in the pharmaceuticals industries are glass-lined to provide corrosion prevention and to avoid product contamination. Typically these reactors contain retreat curve impellers, which may have been modified to fit into a conical-based vessel. The latter are designed for ease of product discharge and prevention of batch to batch contamination. Thus pharmaceutical processes often use non-standard impellers and unusual stirred tank reactor geometries, compared to those found in other chemical processes; these geometries are not covered by the standard correlations in the literature. In this work experiments and computational fluid dynamics calculations have been conducted for a retreat curve impeller in a 0.29 m diameter, conical-based vessel. Power numbers have been obtained experimentally and computationally for a range of impeller clearances and baffling arrangements and correction factors have been proposed to account for the effect of the conical base and partial baffles. Experimentally, liquid blending operations have been shown to occur rather quickly in these vessels, mainly due to the large D/T impellers used. Just-suspended impeller speeds for solids suspension have been measured experimentally and correlated using Zwietering's equation; values of the Zwietering's s parameter are proposed for a range of liquid fill levels, impeller' clearances and baffle arrangements.
机译：许多化学反应堆容器中使用医药产业是玻璃衬里的提供腐蚀预防和避免产品污染。可能是撤退曲线叶轮修改为放入conical-based船。后者的目的是为便于产品放电每一批和预防污染。因此制药过程中经常使用非标准叶轮搅拌釜和不寻常的反应堆的几何图形,而这些发现其他化学过程;不受标准的相关性文学。计算流体动力学的计算进行了曲线叶轮在撤退0.29米直径,conical-based船。数字已经获得实验,计算范围的叶轮许可和令人困惑的安排提出了修正因素锥形基地和部分的影响挡板。操作已被证明,而发生迅速在这些血管,主要是由于大D / T叶轮使用。对固体悬浮速度测量使用Zwietering实验和相关方程;提出了一系列液体填充水平,叶轮的许可和挡板的安排。

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