Carbon dioxide capturing apparatus, air conditioning ventilation system, and carbon dioxide capturing method
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Solution Overview
Problem
Existing carbon dioxide capturing reactors face challenges with high flow resistance due to the opposite flow direction of gas relative to the falling microbeads, limiting their applicability to high-pressure gases and requiring large reactor sizes.
Innovation Solution
A carbon dioxide capturing apparatus with an adsorption unit where the adsorbent falls by self-weight, allowing gas to flow in a direction intersecting the adsorbent's fall, reducing flow resistance and enabling operation with lower-pressure gases, and a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gas flows in a direction exactly opposite to that in which the microbeads fall, then the gas receives large flow resistance from the microbeads, but it is necessary to increase the pressure of the gas flowing into the reactor or to increase the size of the cross section of the reactor
Solution Approach 1:
The patent inverts the conventional counter-current flow configuration by making the gas flow direction intersect with the microbead fall direction rather than being exactly opposite. This inversion changes the flow resistance characteristics while maintaining the mass transfer efficiency needed for carbon dioxide capture.
Solution Approach 2:
The patent transitions from a one-dimensional counter-current flow (gas flowing exactly opposite to microbead fall) to a multi-dimensional flow configuration where gas flows in a direction intersecting the microbead fall direction. This dimensional change reduces flow resistance while preserving capture efficiency.
2Object-affected harmful factors
If the pressure of the gas flowing into the reactor is increased, then the reactor is only applicable to gases having high pressures, but the gas flow resistance is reduced
Solution Approach 1:
Instead of increasing pressure to overcome flow resistance, the patent inverts the approach by changing the flow direction configuration to inherently reduce flow resistance, making the reactor applicable to both high-pressure and low-pressure gases.
3Object-affected harmful factors
If the size of the cross section of the reactor perpendicular to the direction in which the gas flows is increased, then the gas flow resistance is reduced, but a large area is required to install the reactor
Solution Approach 1:
The patent changes the spatial configuration from a large cross-sectional area design to a compact design by making the gas flow direction intersect with the microbead fall direction, reducing the required installation area while maintaining low flow resistance.
4Object-affected harmful factors
If the gas flow direction is changed to intersect with the adsorbent fall direction, then the flow resistance is reduced and the reactor size is decreased, but the mass transfer efficiency must be maintained
Solution Approach 1:
The patent inverts the conventional wisdom that counter-current flow maximizes mass transfer, demonstrating that an intersecting flow configuration can achieve both reduced flow resistance and maintained mass transfer efficiency for carbon dioxide capture.
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 apparatus achieves efficient carbon dioxide capture with reduced flow resistance, allowing operation with lower-pressure gases and a smaller size, eliminating the need for increased pressure or reactor size, and enhancing capture efficiency.
Implementation Method 1
The adsorbent falls from the storage unit through the adsorption space toward the collection unit by the self-weight of the adsorbent
Implementation Method 2
The adsorbent adsorbs in the adsorption space carbon dioxide contained in the gas
Data Source
AI summary
A carbon dioxide capturing apparatus comprises a storage container, a collector, and an adsorber. The adsorber has an adsorption space formed therein. The adsorber is provided with an inlet to allow a gas containing carbon dioxide to flow into the adsorption space. An adsorbent falls from the storage container through the adsorption space toward the collection unit by the self-weight of the adsorbent. The gas is introduced through the inlet into the adsorption space in a direction intersecting a direction in which the adsorbent falls. The adsorbent adsorbs in the adsorption space carbon dioxide contained in the gas.