Switchable Catalytic Reactor for Flexible Hydrogen and Methane Production
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Solution Overview
Problem
Current systems for producing biomethane and biohydrogen from carbon materials lack flexibility to adapt production according to market needs, unable to quickly switch between methane and hydrogen production, and require multiple stages or complex temperature control, leading to inefficiencies and increased costs.
Innovation Solution
A device with a catalytic conversion reactor that can operate in two configurations: promoting Sabatier reactions for methane production at medium temperatures and high pressures, or water gas shift reactions for hydrogen production at high or low temperatures, allowing for flexible operation and adaptive production based on market demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single reactor is used for both methane and hydrogen production, then adaptability and versatility are improved, but device complexity increases due to the need for configurable operating modes
Solution Approach 1:
The catalytic conversion reactor is designed to perform multiple functions by switching between Sabatier reaction mode (for methane production) and water-gas shift reaction mode (for hydrogen production). A single reactor unit with configurable operating parameters replaces what would traditionally require separate dedicated reactors for each production mode, achieving multi-functionality without proportionally increasing device complexity
Solution Approach 2:
The reactor operates in dynamically switchable modes between methane production and hydrogen production. The operating conditions (temperature, pressure, catalyst configuration) can be adjusted in real-time based on market demand, allowing the system to adapt its function dynamically rather than being fixed in a single mode
2Adaptability or versatility
If multiple stages are used for flexible production, then adaptability is improved, but device complexity and capital costs increase
Solution Approach 1:
Instead of using multiple dedicated reactors or production stages for different products, the invention employs a single multi-functional catalytic conversion reactor that can produce either methane or hydrogen based on operating conditions. This consolidates what would traditionally require multiple separate stages into one unified system, reducing overall device complexity while maintaining production flexibility
Solution Approach 2:
The Sabatier reaction pathway and water-gas shift reaction pathway are merged into a single reactor system with a unified catalytic bed. By combining these previously separate production pathways into one integrated system with switchable operating modes, the invention reduces the number of production stages required while preserving the ability to produce different products
3Productivity
If temperature and pressure are optimized for methane production, then productivity is improved, but adaptability worsens due to inability to quickly switch to hydrogen production
Solution Approach 1:
The reactor operating parameters (temperature, pressure, gas flow rates) are designed to be dynamically adjustable without requiring shutdown or major reconfiguration. The system can quickly transition from methane-optimized conditions to hydrogen-optimized conditions by adjusting operational variables, enabling rapid response to market demand changes while maintaining high productivity in either mode
Solution Approach 2:
The invention utilizes changes in operating parameters (temperature, pressure, steam-to-gas ratio) to switch between production modes. By designing the reactor and catalyst system to respond to parameter changes rather than requiring physical reconfiguration, the system achieves both high productivity in each mode and rapid adaptability between modes
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
Enables responsive production of either hydrogen or methane with a single installation, reducing capital and operational costs by allowing quick switching between production modes and optimizing reactor conditions for maximum yield.
Implementation Method 1
a first configuration in which the operating conditions of the reactor promote a Sabatier reaction, so as to produce an outlet gas comprising mainly methane
Implementation Method 2
a second configuration in which the operating conditions of the reactor promote a water gas shift reaction, so as to produce an outlet gas comprising mainly dihydrogen
Data Source
AI summary
The device (100) for hybrid production of synthetic dihydrogen and/or synthetic methane comprises:an inlet (105) for a synthesis gas stream preferably comprising at least CO and H2,a catalytic conversion reactor (110), the following alternative configurations:a first configuration in which the operating conditions of the reactor promote a Sabatier reaction, so as to produce an outlet gas comprising mainly methane, ora second configuration in which the operating conditions of the reactor promote a water gas shift reaction, so as to produce an outlet gas comprising mainly dihydrogen;an outlet (115) for synthetic dihydrogen and/or synthetic methane anda control system (120) comprising a means (121) for selecting a configuration for operating the reactor and a control means (122) according to the selected configuration, the reactor being configured to operate according to a command.