The iodide/iodate reaction scheme was used to study the effect of gas sparging and/or solid particles on micromixing in a stirred vessel. A literature review illustrated the need for focused work on this matter and gave valuable ideas for the experiments. For this, the experimental method was first validated for using the added gaseous and solid phases air and glass beads, respectively. The experiments covered a range of conditions for micromixing in single-phase, for validation, in gas-liquid, solid-liquid and gas-solid-liquid systems: power inputs up to 1.94 W/kg, gas sparge rates up to 1.5 vvm and up to 11.63 wt.% solids with diameters from 150 to 1125 μm. For comparison, the power inputs from the impeller were kept constant when affected by the added phase(s). In order to allow better quantification of the experimental data, variations of the Incorporation model were evaluated for taking recent suggestions for the reaction scheme into consideration. The second dissociation of sulphuric acid was included in the model and different kinetic rate laws from the literature on the Dushman reaction were implemented. These variations allowed order-of-magnitude estimates and further comparisons of local specific energy dissipation rates.ud
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机译：碘化物/碘酸盐反应方案用于研究气体喷射和/或固体颗粒对搅拌容器中微混合的影响。文献综述说明了对此事进行重点研究的必要性，并为实验提供了有价值的想法。为此，首先验证了分别使用添加的气相和固相空气珠和玻璃珠的实验方法。实验涵盖了在气液，固液和气固液系统中单相微混合的条件，以进行验证：功率输入高达1.94 W / kg，气体喷射速率高达1.5 vvm，并且直径为150至1125μm的固体含量高达11.63 wt。％。为了进行比较，当受到增加相的影响时，叶轮的功率输入保持恒定。为了更好地量化实验数据，对结合模型的变化进行了评估，以考虑反应方案的最新建议。该模型包括硫酸的第二次解离，并采用了与文献有关Dushman反应的不同动力学速率定律。这些变化允许对数量级进行估计，并可以进一步比较局部比能量消耗率。
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