Carbon Dioxide Recovery Module with Emergency Oxidation Protection
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Solution Overview
Problem
Sorbent materials used in carbon dioxide recovery devices oxidize when exposed to atmospheric air in a high-temperature state, leading to a decline in adsorption performance, and there is a risk of deterioration during emergencies like power outages or failures when isolation from atmospheric air is compromised.
Innovation Solution
A carbon dioxide recovery device equipped with an oxidation inhibiting gas tank, either inert gas or carbon dioxide tank, supplies an oxidation inhibiting gas to the module during emergencies to prevent sorbent material oxidation, using a controller to manage gas supply and maintain a reduced pressure environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the sorbent material is heated to a high-temperature state during the desorption process, then the adsorption performance is improved through effective desorption, but the sorbent material oxidizes when exposed to atmospheric air, causing degradation
Solution Approach 1:
The patent introduces an inert gas (nitrogen or carbon dioxide) into the module during the desorption process to create an inert atmosphere that prevents oxidation of the sorbent material. The inert gas supply unit supplies the inert gas to the module when the heating unit heats the sorbent material, ensuring the sorbent material is not oxidized even at high temperatures while maintaining effective desorption performance
2Reliability
If valves are controlled to isolate the sorbent material from atmospheric air during the desorption process, then oxidation is prevented, but the isolation may be released during power outage or failure, creating vulnerability
Solution Approach 1:
The patent introduces an inert gas as an intermediary substance between the sorbent material and atmospheric air. Instead of relying solely on valve control to prevent contact with atmospheric air, the inert gas acts as a protective mediator that fills the module space and prevents oxidation even if valves fail or power is lost, significantly improving isolation reliability without adding complex valve control systems
3Reliability
If an inert gas supply system is added to prevent oxidation during emergencies, then sorbent material protection is improved, but the device complexity increases
Solution Approach 1:
The patent designs the inert gas supply unit to serve multiple functions: it prevents oxidation during the desorption process, provides emergency protection during power outages or valve failures, and can be integrated with the existing gas handling system. This multi-functionality approach improves emergency protection capability while minimizing the increase in device complexity by utilizing existing infrastructure
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 device effectively prevents sorbent material degradation by isolating it from atmospheric air during emergencies, ensuring continued performance and extending the lifespan of the sorbent material.
Implementation Method 1
an adsorption process of aspirating a gas such as air containing carbon dioxide and adsorbing to the sorbent material
Implementation Method 2
a desorption process of desorbing the adsorbed carbon dioxide by reducing the pressure and heating the sorbent material
Implementation Method 3
an oxidation inhibiting gas that prevents oxidation of the sorbent material
Data Source
AI summary
A carbon dioxide recovery device includes: a module that includes a sorbent material inside thereof, and executes an adsorption process of aspirating a gas containing carbon dioxide and adsorbing the carbon dioxide to the sorbent material; and a desorption process of desorbing the carbon dioxide from the sorbent material by heating in a state where a periphery of the sorbent material is reduced pressure; a first carbon dioxide tank that stores the carbon dioxide recovered from the module; an oxidation inhibiting gas tank (second carbon dioxide tank, inert gas tank) that stores an oxidation inhibiting gas that prevents oxidation of the sorbent material; and a controller that supplies the oxidation inhibiting gas from the oxidation inhibiting gas tank to the module during execution of the desorption process, when an emergency situation is detected.