This work presents the performance assessment of diverse membrane arrangements to separate carbon dioxide (CO₂) from a binary mixture with methane (CH₄). For the purpose, we employ computer modeling to represent different polymeric modules, which are able to split an inlet CH₄/CO₂ gaseous mixture into sweet and acid products. Aim of the process is to achieve a high-purity CO₂ permeate, reducing the CH₄ losses. Novelty, we compare the performances of different existing commercial polymers, available for gas industries: cellulose acetate, polycarbonates, polyamides, polyamide-imides, polyamides thin-film composites, among others. The importance of the use of different materials is the possibility to replicate total membrane area, transport properties, and operating conditions. Finally, a comparative and integral discussion of the simulations considers three fundamental aspects: hydrocarbon recovery, residual gas quality, and compression power to carry out the separation.

这项工作提出了各种膜布置的性能评估，以从与甲烷（CH ₄）形成的二元混合物中分离出二氧化碳（CO ₂）。为此，我们采用计算机建模来表示不同的聚合物模块，这些模块能够将入口CH ₄ / CO ₂气态混合物分为甜味和酸味产品。该过程的目的是实现高纯度的CO ₂渗透物，减少CH ₄损失。新颖性是，我们比较了可用于天然气工业的各种现有商业聚合物的性能：醋酸纤维素，聚碳酸酯，聚酰胺，聚酰胺酰亚胺，聚酰胺薄膜复合材料等。使用不同材料的重要性在于可以复制总膜面积，运输特性和操作条件。最后，对模拟进行的比较性和整体性讨论考虑了三个基本方面：烃采收率，残余气体质量和进行分离的压缩功率。