Characterization of Micro Mixing for Precipitation of Nanoparticles in a T-Mixer
作者： Johannes Gradl , Wolfgang Peukert
DOI: 10.1007/978-3-642-04549-3_7
关键词:
摘要: Mixing, especially on molecular scale, is a key parameter for controlling rapid chemical synthesis in liquid media. Macro, meso and micro mixing influence significantly reaction kinetics thus the particle formation as well resulting product properties. In this study, static T-shaped mixer investigated experimentally numerically by different approaches. Firstly, particle-image-velocimetry (PIV) laser-induced-fluorescence (LIF) techniques are applied to characterize at length time scales. Thereby all relevant flow structures down Batchelor scale detected special high resolution LIF set-up (HR-LIF). Secondly, nanoparticle precipitation used quantify efficiency. These experimental approaches deliver two global parameters, namely mean size width of distribution (PSD), showing explicitly effect efficiency formation. Based results theoretical model developed, which couples fluid dynamics with solid kinetics. This predicts accurately complete shape PSD barium sulfate T-mixer visualizes kinetic data three dimensions mixer.
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