Metal Support Gas Separation Composite for Heat Resistance
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Solution Overview
Problem
Gas separation membranes with organic resin support layers face issues with heat resistance, leading to deformation and damage during high-temperature gas separation operations, which compromises their ability to maintain gas separation performance.
Innovation Solution
A gas separation composite is developed using a metal support with through holes of specific dimensions and a laminated gas separation layer, primarily made of insoluble polyimide, to enhance heat resistance and mechanical strength, ensuring proper support and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a thin gas separation membrane is used to ensure high gas permeability, then gas permeability is improved, but mechanical strength decreases leading to generation of defects
Solution Approach 1:
The patent creates a composite membrane structure by forming a gas separation membrane layer on a support layer. The support layer provides mechanical strength while the gas separation membrane layer provides selective permeability. This composite structure allows the gas separation membrane to be thin for high permeability while the support layer prevents defects through adequate mechanical strength.
2Ease of manufacture
If a support layer made of organic resin material is used to provide mechanical strength, then ease of manufacture is improved, but heat resistance deteriorates causing deformation and damage during high-temperature operations
Solution Approach 1:
The patent forms a composite structure where an organic resin support layer is combined with a gas separation membrane layer. The organic resin support provides ease of manufacture and basic mechanical strength, while the gas separation membrane layer provides the necessary heat resistance for high-temperature operations. This composite approach allows the benefits of both materials to be combined.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite achieves high heat resistance and mechanical strength, preventing support layer deformation and maintaining excellent gas permeability and separation properties during both formation and operation.
Implementation Method 1
A material formed of a polymer compound has a gas permeability specific to the material. Based on this property, it is possible to cause selective permeation and separation out of a target gas component using a membrane formed of a specific polymer compound.
Data Source
AI summary
The present invention provides a gas separation composite which has high heat resistance and mechanical strength, prevents a support layer from being deformed or damaged by heat during formation of a gas separation membrane and heat during a gas separation operation, and properly supports a gas separation layer to obtain high gas permeability and gas separation properties; and a method of producing the gas separation composite. The gas separation composite includes a metal support having a plurality of through holes in the thickness direction and a gas separation layer laminated on the surface of the metal support. The thickness of the gas separation layer is in a range of 0.1 to 5 μm, the average opening diameter of the through holes of the metal support is in a range of 0.1 to 30 μm, and the opening ratio thereof is in a range of 0.05% to 10%.