Spent caustic from the desulfurization of liquefied petroleum gas has been proved to be effectively regenerated in a rotating packed bed (RPB) with classic wire mesh packing. However, the influence of the packing’s surface wettability on regeneration performance in the RPB was not clear with this oil-water two-phase system. In this work, the surface-modified packing was proposed to be used in the RPB to estimate the regeneration performance, including oxidation and separation efficiency. Three different surface-modified packings of hydrophilic surface-modified wire mesh packing (ISP), non-surface-modified wire mesh packing (NSP), and hydrophobic surface-modified wire mesh packing (OSP) were prepared and employed in the RPB for regeneration experiments. Results show that regeneration performance is in order of ISP＞NSP＞OSP. Compared with OSP, the NaSR conversion, RSSR removal efficiency, and number of transfer units of ISP increased nearly by 34%, 13%, and 21% at 1000 r/min rotational speed and 25 mm packing thickness, respectively. For the view of different packing combination, not only in the inner layer but also in the outer layer, ISP had noticeable superior regeneration performance, which displays the bright future of advanced surface-modified packing used in the RPB for process intensification of reaction and separation.

液化石油气脱硫所产生的废碱已被证明可在带有传统丝网填料的旋转填料床（RPB）中有效再生。但是，在该油水两相系统中，填料表面的可湿性对RPB中再生性能的影响尚不清楚。在这项工作中，建议在RPB中使用表面改性填料来评估再生性能，包括氧化和分离效率。制备了亲水性表面改性金属丝网填料（ISP），非表面改性金属丝网填料（NSP）和疏水性表面改性金属丝网填料（OSP）的三种不同的表面改性填料，并在RPB中用于再生实验。结果表明，再生性能依次为ISP＞ NSP＞ OSP。与OSP相比，在转速为1000 r / min和包装厚度为25 mm时，NaSR转化率，RSSR去除效率和ISP的转移单元数分别增加了近34％，13％和21％。从不同填料组合的角度来看，ISP不仅在内层而且在外层都有明显的优异再生性能，这显示了用于RPB中用于增强反应和分离过程的高级表面改性填料的光明前景。 。