For low-pressure pervaporation, the performance of spiral wound pervaporation membrane (SWM-PV) module is significantly influenced by permeate spacer structure. This study addresses mass transport challenges in SWM-PV modules, focusing on increased gas flow resistance and vacuum attenuation due to membrane envelope deformation in the permeate side channel. Employing fluid and structural simulation models to evaluate phase change and membrane deformation, we successfully optimized SWM-PV module configurations for improved ethanol recovery. Our strategies included a mass transfer-enhanced feed spacer to mitigate concentration polarization, a high-strength permeate spacer to alleviate membrane deformation, and tailored membrane envelopes to balance packing density and mass transfer efficiency. These synergistic optimizations led to a 22.1% improvement in ethanol mass transfer coefficient and a 78.5% reduction in module's specific energy consumption. Our work reveals the importance of permeate spacer structure in optimizing SWM-PV modules, offering clear guidance for the development of mass transfer-enhanced SWM-PV modules.

中文翻译：

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通过模拟优化螺旋卷式渗透蒸发膜组件：揭示渗透间隔结构


对于低压渗透蒸发，螺旋卷式渗透蒸发膜（SWM-PV）组件的性能受渗透间隔结构的显着影响。这项研究解决了 SWM-PV 模块中的质量传输挑战，重点关注渗透侧通道中膜包膜变形导致的气流阻力增加和真空衰减。利用流体和结构模拟模型来评估相变和膜变形，我们成功优化了 SWM-PV 模块配置，以提高乙醇回收率。我们的策略包括用于减轻浓差极化的传质增强进料垫片、用于减轻膜变形的高强度渗透垫片以及用于平衡填充密度和传质效率的定制膜封套。这些协同优化使乙醇传质系数提高了22.1%，模块单位能耗降低了78.5%。我们的工作揭示了渗透间隔结构在优化 SWM-PV 模块中的重要性，为传质增强型 SWM-PV 模块的开发提供了明确的指导。