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针对3种不同结构的定子,采用不同粘度的牛顿流体及假塑性非牛顿流体作为工作介质,对连续高速分散混合器(CRS)内的流体力学性能进行了系统的实验研究,着重对CRS的功率特性、流体的表观Kolmogorov尺度进行了测定和分析.结果表明,3号定子操作条件下的功率准数最大,为5.44;CRS的Metzner-Otto常数远大于普通搅拌桨;CRS内流体的表观Kolmogorov尺度比传统的搅拌反应器小一个数量级,因此CRS内的微观混合时间远小于搅拌反应器.研究结果可为连续高速分散混合器的优化提供参考.
Aiming at the three different structures of stator, the Newtonian fluid with different viscosities and the pseudoplastic non-Newtonian fluid were used as working medium. The fluid mechanics performance in continuous high speed disperser mixer (CRS) was systematically studied. The power of CRS Properties and apparent Kolmogorov scale of the fluid were measured and analyzed.The results show that the power quanlity of the No.3 stator is the largest, which is 5.44, the Metzner-Otto constant of the CRS is much larger than that of the ordinary stirrer, and the apparent fluid The Kolmogorov scale is one order of magnitude smaller than conventional stirred reactors, so the micromixing time in the CRS is much less than in stirred reactors. The results provide a reference for the optimization of continuous high speed dispersive mixers.