A commercial-size prototype of countercurrent spiral-wound membrane module for flue gas CO2 capture

In spite of significant advancements in the synthesis of lab-scale polymeric membranes for CO2 separation, only a limited number of studies have transitioned to pilot-scale studies. Fabricating membrane modules is a critical step in realizing the commercialization of gas separation membranes for post-combustion carbon capture, yet specific details regarding this process are rarely demonstrated. In this study, a commercial-size ⌀8ʺ prototype of countercurrent sweep spiral-wound (SW) membrane module with an amine-containing facilitated transport membrane was successfully fabricated. The module comprised 41 membrane leaves, each with a width of 20ʺ and a length of 36ʺ, resulting in a total effective membrane area of 35 m2. To ensure an even distribution of sweep flow on the permeate side to minimize pressure drop, a new epoxy glue dot line pattern was strategically designed to create a countercurrent flow configuration. The SW membrane module exhibited consistent transport performance aligning with the results of the flat-sheet membrane. The successful fabrication of the commercial-size prototype highlights the exceptional potential and effectiveness of the developed full-scale membrane module in effectively tackling the challenges associated with CO2 capture from flue gas.