Multi-Reactor Gas Production Apparatus for Stable CO Generation
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Solution Overview
Problem
Current methods for converting carbon dioxide into carbon monoxide, such as those described in PTL 1, lack industrial feasibility due to insufficient technical details and efficiency in manufacturing conditions and apparatus design.
Innovation Solution
A gas production apparatus and system that involves bringing a raw material gas containing carbon dioxide into contact with a reducing agent containing a metal oxide, using a configuration with multiple reactors and a gas merging section, where the raw material and reducing gases are switched based on predetermined conditions to optimize carbon dioxide conversion to carbon monoxide, with specific ratios and heat management to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single reactor is used for carbon dioxide conversion, then the apparatus structure is simple, but continuous stable production cannot be achieved due to reducing agent oxidation
Solution Approach 1:
The single reactor is divided into multiple reactors (first reactor and second reactor) that operate in parallel. One reactor performs carbon dioxide conversion while the other undergoes reducing agent regeneration, enabling continuous stable production without requiring complex multi-stage sequential processing
Solution Approach 2:
The system implements periodic switching between the first and second reactors. When one reactor is performing carbon dioxide conversion, the other is being regenerated with reducing gas, and they alternate roles in a cyclic manner to maintain continuous operation
2Manufacturing precision
If gas switching is delayed, then the apparatus operation is simpler, but carbon dioxide conversion efficiency drops below acceptable levels
Solution Approach 1:
The system incorporates a switching control mechanism that monitors the oxidation state of the reducing agent and automatically switches between reactors based on predetermined conditions. This feedback-based control ensures conversion efficiency remains above acceptable thresholds while automating the complexity of timing decisions
3Reliability
If reducing agent oxidation is not addressed, then the process is simpler, but the reducing agent loses effectiveness and production becomes unstable
Solution Approach 1:
Instead of discarding the oxidized reducing agent, the system recovers it by introducing reducing gas to regenerate the reducing agent in a separate reactor. This allows the reducing agent to be reused multiple times, ensuring production stability while managing the complexity of regeneration processes
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
This approach allows for the continuous and stable industrial-scale production of carbon monoxide from carbon dioxide, improving conversion efficiency and manufacturing processes by adjusting the timing of gas switching and using heat exchangers to optimize reaction conditions.
Implementation Method 1
a reducing agent containing a metal oxide that reduces the carbon dioxide to manufacture a produced gas containing carbon monoxide
Implementation Method 2
a reducing gas containing a reducing substance that reduces the reducing agent oxidized by contact with the carbon dioxide
Implementation Method 3
a heat exchanger that exchanges heat between the mixed gas and the raw material gas before being supplied to the reactor
Data Source
AI summary
A gas production apparatus and a gas production system capable of continuously and stably manufacturing a produced gas containing carbon monoxide from a raw material gas containing carbon dioxide are provided. A gas production apparatus 1 is an apparatus that manufactures a produced gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with a reducing agent containing a metal oxide that reduces carbon dioxide. The gas production apparatus includes a reaction section 4 that includes a plurality of reactors 4a and 4b and a reducing agent arranged in the reactors 4a and 4b, and that is capable of switching between the raw material gas and the reducing gas to be supplied to each of the reactors 4a and 4b. When a predetermined amount of raw material gas is supplied to the reactors 4a and 4b, or when the conversion efficiency of carbon dioxide to carbon monoxide falls below a predetermined value, the gas production apparatus is configured to switch between the raw material gas and the reducing gas to be supplied to each reactor 4a and 4b.