Gas separation membrane, gas separation membrane module, and production method for gas separation membrane
AssigneeToray Industries, Inc.
InventorsSo Kakiyama, Takaaki Mihara
Life of this patent
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Abstract
A gas separation membrane includes a composite membrane, the composite membrane including: a gas separation functional layer; and a compound having a composition different from a compound constituting the gas separation functional layer, wherein the presence ratio of the gas separation functional layer at at least one surface of the gas separation membrane is not less than 90% and less than 100%. Provided is a gas separation membrane capable of suppressing damage of the gas separation functional layer during the preparation process of a gas separation membrane module or during the use of a gas separation membrane module even when the gas separation functional layer includes a site having low strength.
Claims12
A gas separation membrane comprising a composite membrane, the composite membrane comprising:
- a gas separation functional layer;
- and
- a composite compound different from a compound constituting the gas separation functional layer,
- wherein a compound constituting the gas separation functional layer is an inorganic compound,
- wherein a presence ratio of the gas separation functional layer at at least one surface of the gas separation membrane is not less than 90.0% and less than 100%.
A method of producing a gas separation membrane comprising a composite membrane, the composite membrane comprising:
- a gas separation functional layer;
- and
- a composite compound different from a compound constituting the gas separation functional layer, wherein the composite compound is formed by counter diffusion reaction, the method comprising:
- passing a gas or solution as a substrate of the composite compound, into a space separated by a membrane comprising an uncombined membrane;
- and
- passing a gas that cures the gas or solution as the substrate of the composite compound, into another space separated by the uncombined membrane.
Dependencies are inferred from the claim text.