The purpose of this work was to study the hydrodynamic behavior of two viscous waste oils (a transformer oil and a lubricant characterized by viscosities of 19 mPa s and 79 mPa s at 25°C, respectively) and a silicone oil (20 mPa s at 25°C) in a laboratory-scale packed column (D_col = 0.12 m). The column was filled with structured packing made of corrugated sheets (Flexipac® 500Z HC) and was operated at counter-current. Thus, the gas superficial velocities at the loading point were in the range from 0.40 to 0.65 m s⁻¹ for liquid loads between 1 and 24 m³ m⁻² h⁻¹, and, at the flooding point from 0.56 to 1.07 m s⁻¹ for liquid loads between 6 and 36 m³ m⁻² h⁻¹. Both loading and flooding points were particularly influenced by the solvent viscosity, leading to a narrow loading zone for the most viscous solvent (lubricant). The pressure drop values remained reasonable, lower than 450 Pa m⁻¹ in the loading zone, even for the lubricant. Billet-Schultes correlations were used for the prediction of the loading and flooding velocities and of the pressure drop. The specific constants of the model were determined. These correlations enable accurate predictions of the loading and flooding points, with an average relative error around 7–8%, and of the pressure drop in the loading zone, with an average relative error of 15%. Simulations were performed with the Billet-Schultes correlations and showed that high liquid holdup and interfacial area would be obtained with these viscous solvents in the selected packing. Scale-up calculations proved that it would be possible to implement the transformer oil at industrial scale in a packed column filled with the studied structured packing.

这项工作的目的是研究两种粘性废油（一种变压器油和一种在25°C下的粘度分别为19 mPa s和79 mPa s的润滑剂）和一种硅油（20 mPa s的流体力学行为）。 25°C）在实验室规模的填充柱中（D _col = 0.12 m）。色谱柱填充有由波纹板制成的规整填料（Flexipac®500Z HC），并逆流操作。因此，对于在1和24m ³ m ^-2 h ^-1之间的液体负载，在加载点处的气体表面速度在0.40至0.65 ms ^-1的范围内，并且在溢流点处的气体表面速度在0.56至1.07 ms ^{-1的范围内。}用于6至36 m ³之间的液体负载m ^-2 h ^-1。加载点和溢流点都特别受溶剂粘度的影响，导致最粘稠的溶剂（润滑剂）的加载区域狭窄。压降值保持合理，低于450 Pa m ^-1在装载区，甚至用于润滑剂。Billet-Schultes相关性用于预测加载速度和淹没速度以及压降。确定了模型的比常数。这些相关性可以准确预测载荷和溢流点，平均相对误差在7–8％左右，并且可以预测载荷区域的压降，平均相对误差为15％。使用Billet-Schultes相关性进行了模拟，结果表明，在选定的包装中使用这些粘性溶剂可以获得较高的液体滞留率和界面面积。放大计算证明，可以在填充有研究结构填料的填充塔中以工业规模实施变压器油。