Gas Separation Membrane Unit And Gas Separation Apparatus

Patent metadata

Field	Value
Publication number	US-2025041792-A1
Application number	US-202418788340-A
Country	US
Kind code	A1
Filing date	Jul 30, 2024
Priority date	Jul 31, 2023
Publication date	Feb 6, 2025
Grant date	—

Abstract

A gas separation membrane unit includes: a gas separation membrane configured to separate a predetermined gas component contained in a mixed gas supplied to a first surface by allowing the predetermined gas component to permeate to a second surface that is a reverse surface of the first surface; a gas flow path part including a wall body configured to define an internal space through which the predetermined gas component separated flows; and a first convex structure protruding from at least one of the first surface of the gas separation membrane and an outer surface of the wall body.

First claim

What is claimed is:

1 . A gas separation membrane unit comprising:
a gas separation membrane configured to separate a predetermined gas component contained in a mixed gas supplied to a first surface by allowing the predetermined gas component to permeate to a second surface that is a reverse surface of the first surface; a gas flow path part including a wall body configured to define an internal space through which the predetermined gas component separated flows; and a first convex structure protruding from at least one of the first surface of the gas separation membrane and an outer surface of the wall body.

2 . The gas separation membrane unit according to claim 1 , further comprising
two pieces of the gas separation membranes arranged such that the second surfaces are opposed to each other.

3 . The gas separation membrane unit according to claim 2 , wherein
the first convex structure is disposed on each of the first surfaces of the two gas separation membranes.

4 . The gas separation membrane unit according to claim 1 , wherein
a projection height of the first convex structure is 0.1 mm or more and 50 mm or less.

5 . The gas separation membrane unit according to claim 1 , wherein
a gas permeability to carbon dioxide of the gas separation membrane is 5000 GPU or more and 100000 GPU or less.

6 . A gas separation apparatus comprising:
the gas separation membrane unit according to claim 1 ; and an exhaust pump configured to exhaust the predetermined gas component flowing through the internal space of the gas flow path part.

7 . The gas separation apparatus according to claim 6 , further comprising
a mixed gas supply unit including
a mixed gas flow path part which is defined by a wall surface including the first surface and through which the mixed gas flows,
a mixed gas introduction part configured to introduce the mixed gas into the mixed gas flow path part, and
a mixed gas discharge part configured to discharge the mixed gas from the mixed gas flow path part.

8 . The gas separation apparatus according to claim 7 , wherein
the mixed gas supply unit includes a second convex structure protruding from the wall surface.

9 . The gas separation apparatus according to claim 7 , wherein
the first convex structure protrudes at upstream in a flow of the mixed gas of the gas separation membrane on the outer surface of the wall body.

10 . The gas separation apparatus according to claim 6 , further comprising
at least two pieces of the gas separation membrane units arranged at a distance from each other in a direction crossing the first surface.

Assignees

• Seiko Epson Corp

Inventors

• Furusawa Masahiro
• Tadachi Kei

Classifications

• B01D2258/06

  Polluted air · CPC title

• B01D2258/02

  Other waste gases · CPC title

• B01D2256/22

  Carbon dioxide · CPC title

• B01D53/22

  by diffusion (manufacturing semi-permeable membranes B01D67/00; form, structure or properties of semi-permeable membranes B01D69/00; material for semi-permeable membranes B01D71/00) · CPC title

• B01D53/228 Primary

  characterised by specific membranes · CPC title