Carbon Membrane Structure With 0.60 mm Cell Spacing
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Solution Overview
Problem
Conventional carbon membrane structures experience deterioration in separation performance due to uneven drying of the carbon membrane precursor, which concentrates solutes and affects the membrane's homogeneity, especially when the distance between adjacent cells is short.
Innovation Solution
A carbon membrane structure with a porous support body where the distance between adjacent cells is 0.60 mm or more, ensuring uniform drying and preventing heat influence from adjacent cells, thereby maintaining separation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the distance between adjacent cells is shortened to increase membrane area per unit volume, then the membrane area ratio increases, but the separation performance deteriorates due to uneven drying of the carbon membrane precursor
Solution Approach 1:
The invention changes the critical parameter of cell distance from a conventional short distance to 0.60 mm or more. This parameter change prevents thermal interference between adjacent cells during drying, eliminating the root cause of uneven precursor drying and solute concentration, thereby resolving the contradiction between membrane area ratio and separation performance
Solution Approach 2:
The invention effectively segments the thermal fields of adjacent cells by maintaining a distance of 0.60 mm or more between them. This segmentation prevents heat from one cell from affecting the drying process of adjacent cells, ensuring uniform drying conditions across all cells while maintaining high membrane area ratio
2Productivity
If the distance between adjacent cells is short, then more cells can be packed in the substrate, but thermal influence from adjacent cells causes solute concentration in the precursor solution
Solution Approach 1:
The invention changes the cell distance parameter to 0.60 mm or more, which fundamentally alters the thermal interaction between adjacent cells. This parameter change prevents solute concentration caused by thermal influence, ensuring homogeneous carbon membrane composition while maintaining high productivity through efficient cell packing
Solution Approach 2:
The invention introduces sufficient spacing (0.60 mm or more) as an intermediary space between adjacent cells. This space acts as a thermal buffer that prevents direct thermal influence between cells, eliminating the mechanism that causes solute concentration and maintaining precursor solution homogeneity throughout the drying process
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 increased distance between cells in the carbon membrane structure leads to excellent separation performance by preventing solute concentration and ensuring a homogeneous carbon membrane, enhancing the membrane's separation efficiency.
Implementation Method 1
a specific portion of the carbon membrane precursor is dried first by the thermal influence from the adjacent cells
Implementation Method 2
In the drying step, homogeneous carbon membrane is formed on the surfaces of the cells by evenly drying the membrane-shaped carbon membrane precursor body
Data Source
AI summary
A carbon membrane structure includes: a cylindrical porous support body provided with a plurality of cells extending from one end face to the other end face and functioning as fluid passages, and a carbon membrane disposed on the surface side of the cells formed in the porous support body. The plurality of cells are formed so that a distance from one cell to another cell adjacent to the one cell in a cross section perpendicular to a cell extension direction of the porous support body 1 is 0.60 mm or more. The carbon membrane structure shows very excellent separation performance by the carbon membrane.