| 摘要 |
To provide an acid gas separation composite membrane provided with a gel-state facilitated transport membrane with durability of separation performance in separation of a gas to be separated, the gas containing a high flow rate of water vapor under a high pressure environment. A solution is an art for arranging a hydrophobic porous body (2a) having three-dimensional network structure (200) formed through intersecting, coupling or branching of a plurality of fibrils (201), and a large number of pores (203) formed of microscopic interstices divided by the plurality of fibrils (201), and having thereon an acid gas separation facilitated transport membrane (3) disposed on one surface of the hydrophobic porous body (2a), and an auxiliary support (2b) laminated on a rear surface of the hydrophobic porous body (2a), in which an average inter-fibril distance inside a plane in parallel to a surface on which the acid gas separation facilitated transport membrane (3) is formed is adjusted to 0.001 µm or more and 2 µm or less, an average fibril length inside the plane is adjusted to 0.01 µm or more and 2 µm or less, and an average inter-fibril distance in a direction perpendicular to the surface is adjusted to 0.001 µm or more and 2 µm or less. |
