Abstract: 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.

Abstract: Provided is a means which makes it possible to prevent quality deterioration of a facilitated transport membrane for a long period of time. A method for packing the facilitated transport membrane selectively allowing a specific gas to permeate therethrough, includes the steps of: putting the facilitated transport membrane in a packaging body having a transmission rate of not more than 10,000 cm3/(m2·24 h·atm) for the specific gas; preventing a contact between the facilitated transport membrane and the specific gas; and lastly sealing the packaging body.

Abstract: A manufacturing method for an acidic gas separation membrane sheet includes: a step of preparing a hydrophilic resin composition liquid for forming a hydrophilic resin composition layer; a step of removing bubbles contained in the hydrophilic resin composition liquid; a step of applying the hydrophilic resin composition liquid onto a first porous layer to form an applied layer on the first porous layer; and a step of laminating a second porous layer on the applied layer to form a laminated body. The step of removing bubbles includes: a step of applying a shear to the hydrophilic resin composition liquid; and a step of leaving the hydrophilic resin composition liquid.

Abstract: Provided is a means which makes it possible to prevent quality deterioration of a facilitated transport membrane for a long period of time. A method for packing the facilitated transport membrane selectively allowing a specific gas to permeate therethrough, includes the steps of: putting the facilitated transport membrane in a packaging body having a transmission rate of not more than 10,000 cm3/(m2·24 h·atm) for the specific gas; preventing a contact between the facilitated transport membrane and the specific gas; and lastly sealing the packaging body.

Abstract: 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.