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US 11,691,109 B2Granted
Gas separation membrane element, gas separation membrane module and gas separation apparatus
AssigneeSumitomo Chemical Company, Limited
InventorsTsutomu Tasaki, Shinichi Furukawa
Life of this patent
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Abstract
The gas separation membrane element contains a gas separation membrane, and a sealing portion for preventing mixture of a source gas and a specific gas permeated through a gas separation membrane. The gas separation membrane has a first porous layer including a porous membrane, and a hydrophilic resin composition layer disposed on the first porous layer. The sealing portion is a region in which a cured material of a sealant penetrates in at least the first porous layer in the gas separation membrane, and a thermal expansion coefficient A of the sealing portion and a thermal expansion coefficient B of a material forming the first porous layer satisfy a relation (I): 0.35≤A/B≤1.0 (I).
Claims13
A gas separation membrane element which separates a specific gas from a source gas containing the specific gas, the gas separation membrane element comprising:
- a feed-side flow channel member to which the source gas is fed;
- a gas separation membrane;
- a permeate-side flow channel member in which the specific gas permeated through the gas separation membrane flows;
- and
- a sealing portion for preventing mixture of the source gas and the specific gas permeated through the gas separation membrane,
- the gas separation membrane including
- a first porous layer including a porous membrane,
- a hydrophilic resin composition layer selectively permeating the specific gas contained in the source gas, and
- a second porous layer including a porous membrane,
- the hydrophilic resin composition layer being disposed directly on the first porous layer,
- the second porous layer being disposed directly on a surface of the hydrophilic resin composition layer opposite to the surface of the hydrophilic resin composition layer on which the first porous layer is provided,
- the material forming the permeate-side flow channel member including at least one kind of material selected from the group consisting of polyethersulfone (PES), polysulfone (PSF), polyetheretherketone (PEEK), polyimide (PI), polyphenylene sulfide (PPS), and metals,
- the sealing portion being a region in which a cured material of a sealant penetrates in at least the first porous layer and the permeate-side flow channel member,
- a thermal expansion coefficient A of the sealing portion and a thermal expansion coefficient B of a material forming the first porous layer satisfying a relation (I):
- 0.35≤A/B≤1.0 (I);
- and
- whereby:
- (a) the gas separation membrane includes a third porous layer including a porous membrane,
- (b) the third porous layer is disposed on a surface opposite to a surface of the first porous layer on which the hydrophilic resin composition layer is disposed, and between the first porous layer and the permeate-side flow channel member,
- (c) the material forming the third porous layer includes at least one kind of material selected from the group consisting of fluorine-containing resins, polystyrene (PS), polyester resins, polyether sulfone (PES), polyphenylene sulfide (PPS), polysulfone (PSF), polyimide (PI), polyetherimide (PEI), polyether ether ketone (PEEK), high molecular weight polyester, heat resistant polyamide, aramid, polycarbonate, metals, glass, and ceramics, and
- (d) the sealing portion is a region in which a cured material of a sealant penetrates in at least the first porous layer, third porous layer, and the permeate-side flow channel member;
- wherein the sealant is vinyl chloride copolymer-based resins, vinyl chloride-vinyl acetate copolymer-based resins, vinyl chloride-vinylidene chloride copolymer-based resins, vinyl chloride-acrylonitrile copolymer-based resins, butadiene-acrylonitrile copolymer-based resins, polyamide-based resins, polyvinyl butyral-based resins, polyester-based resins, cellulose derivative-based resins, styrene-butadiene copolymer-based resins, synthetic rubber-based resins, phenol-based resins, urea-based resins, melamine-based resins, phenoxy-based resins, silicone-based resins, or urea formamide-based resins.
19 more elements
A method for manufacturing a gas separation membrane element which separates a specific gas from a source gas containing the specific gas, the gas separation membrane element comprising:
- a feed-side flow channel member to which the source gas is fed;
- a gas separation membrane,
- a permeate-side flow channel member in which the specific gas permeated through the gas separation membrane flows;
- and
- a sealing portion for preventing mixture of the source gas and the specific gas permeated through the gas separation membrane,
- the method comprising:
- preparing the gas separation membrane including
- a first porous layer including a porous membrane,
- a hydrophilic resin composition layer selectively permeating the specific gas contained in the source gas, the hydrophilic resin composition layer being disposed directly on the first porous layer, and
- a second porous layer including a porous membrane, the second porous layer being disposed directly on a surface of the hydrophilic resin composition layer opposite to the surface of the hydrophilic resin composition layer on which the first porous layer is provided;
- the material forming the permeate-side flow channel member including at least one kind of material selected from the group consisting of polyethersulfone (PES), polysulfone (PSF), polyetheretherketone (PEEK), polyimide (PI), polyphenylene sulfide (PPS), and metals, and
- forming the sealing portion by causing a sealant to be penetrated and cured in at least the first porous layer and the permeate-side flow channel member,
- a thermal expansion coefficient A of the sealing portion and a thermal expansion coefficient B of a material forming the first porous layer satisfying a relation (I):
- 0.35≤A/B≤1.0 (I);
- whereby the method comprises obtaining a laminate in which the acid gas separation membrane, the feed-side flow channel member, and the permeate-side flow channel member are laminated;
- and
- (a) the gas separation membrane includes a third porous layer including a porous membrane,
- (b) the third porous layer is disposed on a surface opposite to a surface of the first porous layer on which the hydrophilic resin composition layer is disposed, and between the first porous layer and the permeate-side flow channel member,
- (c) the material forming the third porous layer includes at least one kind of material selected from the group consisting of fluorine-containing resins, polystyrene (PS), polyester resins, polyether sulfone (PES), polyphenylene sulfide (PPS), polysulfone (PSF), polyimide (PI), polyetherimide (PEI), polyether ether ketone (PEEK), high molecular weight polyester, heat resistant polyamide, aramid, polycarbonate, metals, glass, and ceramics, and
- (d) the sealing portion is a region in which a cured material of a sealant penetrates in at least the first porous layer, third porous layer, and the permeate-side flow channel member
- wherein the sealant is vinyl chloride copolymer-based resins, vinyl chloride-vinyl acetate copolymer-based resins, vinyl chloride-vinylidene chloride copolymer-based resins, vinyl chloride-acrylonitrile copolymer-based resins, butadiene-acrylonitrile copolymer-based resins, polyamide-based resins, polyvinyl butyral-based resins, polyester-based resins, cellulose derivative-based resins, styrene-butadiene copolymer-based resins, synthetic rubber-based resins, phenol-based resins, urea-based resins, melamine-based resins, phenoxy-based resins, silicone-based resins, or urea formamide-based resins.
18 more elements
Dependencies are inferred from the claim text.