Sumitomo Chemical Company, Limited

Cui Liang

Shohei Kasahara

Hisaaki Miyamoto

Nobutaka Kodama

Tsutomu Tasaki

Kazuya Inamoto

Hironori Takemoto

Provided are a spiral-wound gas separation membrane element, a manufacturing method therefor, a gas separation membrane module and a gas separation apparatus that include the element. The element includes a laminated body wound around a perforated central tube and including a separation membrane-flow channel member composite body. The composite body includes a gas separation membrane including a first porous layer and a hydrophilic resin composition layer. The gas separation membrane is folded with the first porous layer being located outside the hydrophilic resin composition layer. The composite body also includes a flow channel member that forms a gas flow channel, the flow channel member being sandwiched in the folded gas separation membrane. The flow channel member is provided with a first cover that covers one end portion of four end portions. The first cover is located closest to a turn-back part of the folded gas separation membrane.

Spiral-wound gas separation membrane element, gas separation membrane module, and gas separation apparatus

Provided is an acid gas separation membrane that includes an acid gas separation layer containing a hydrophilic resin and an acid gas carrier, a hydrophobic porous membrane layer supporting the acid gas separation layer, a porous membrane protective layer protecting the acid gas separation layer, and a first layer having a Gurley number of less than or equal to 0.5 times a Gurley number of the hydrophobic porous membrane layer and the porous membrane protective layer, the Gurley number of the first layer being greater than or equal to 0.1 s and less than or equal to 30 s. Also provided is an acid gas separation method using the acid gas separation membrane, as well as an acid gas separation module and an acid gas separation apparatus that each include the acid gas separation membrane.

Acid gas separation membrane and acid gas separation method using same, acid gas separation module, and acid gas separation apparatus

A spiral-wound acid gas separation membrane element () includes a wound body including a separation membrane (), a feed-side channel component (), and a permeate-side channel component () wound in a laminated state around a core tube (). The core tube () has a group of holes for allowing communication between a permeate-side spatial portion defined by the permeate-side channel component () and a spatial portion inside the core tube (), the group of holes being present on an end side of the core tube ().

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Osaka, Japan

Cui Liang