Combined Hydrogen Loading and Unloading Unit
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Solution Overview
Problem
Current systems for hydrogen storage and release require separate loading and unloading units with different reaction vessels and catalysts, leading to increased investment costs, operational complexity, and inefficiencies due to non-overlapping high and low energy periods.
Innovation Solution
A combined loading/unloading unit that uses the same reaction vessel for both hydrogen loading and unloading, employing a single catalyst that can be regenerated, and a heat exchanger for efficient heat management, allowing for non-simultaneous loading and unloading during different time periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate loading and unloading units are used with different reaction vessels and catalysts, then the hydrogen loading and unloading processes can be optimized for their specific conditions, but the investment costs and operational complexity increase significantly
Solution Approach 1:
The patent combines separate loading and unloading units into a single integrated reaction vessel that can perform both hydrogenation (loading) and dehydrogenation (unloading) processes. This merging eliminates the need for duplicate infrastructure including control electronics, safety devices, measurement and control technology, and pumps, while maintaining process optimization through a regenerable catalyst that adapts to different operational modes.
Solution Approach 2:
The reaction vessel is designed as a universal unit capable of performing multiple functions - both loading (hydrogenation) and unloading (dehydrogenation) of hydrogen from organic carrier media. The catalyst within the vessel can be regenerated in situ, allowing the same vessel and catalyst to serve multiple purposes across different operational cycles, thereby reducing system complexity while maintaining functional versatility.
2Productivity
If separate loading and unloading units are provided, then each unit can be designed for optimal performance, but the investment costs increase by 25-50%
Solution Approach 1:
By merging loading and unloading functions into a single reaction vessel, the patent eliminates the need to manufacture and install duplicate high-cost components including control systems, safety devices, and auxiliary units. The combined unit requires only one set of infrastructure, reducing manufacturing complexity and investment costs by 25-50% while maintaining optimal performance through the regenerable catalyst system.
3Power
If loading and unloading occur in separate units, then simultaneous operation is possible, but downtime and operational inefficiencies increase due to non-overlapping high and low energy periods
Solution Approach 1:
The patent implements periodic action by operating the single reaction vessel in alternating cycles - loading during high energy periods and unloading during low energy periods. The regenerable catalyst allows the vessel to be quickly prepared for the next cycle without extended downtime, and the system can be scaled by adding parallel vessels to achieve simultaneous overall operation while maintaining efficient utilization of each individual vessel.
4Device complexity
If a single reaction vessel is used for both loading and unloading, then investment costs and complexity are reduced, but the vessel must handle varying pressure and temperature conditions
Solution Approach 1:
The reaction vessel is designed to adapt to varying operational parameters - during loading it operates at high pressure and moderate temperature, while during unloading it operates at lower pressure and higher temperature. The regenerable catalyst and vessel design accommodate these parameter changes, allowing the same vessel to handle both sets of conditions effectively, thereby reducing system complexity while maintaining the necessary adaptability.
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 solution reduces investment costs by 25-50% and enhances operational stability and efficiency by enabling continuous operation, reducing downtime and energy expenditure, while allowing for flexible energy storage and release.
Implementation Method 1
A loading/unloading catalyst, particularly one arranged in the reaction vessel, for catalyzing the loading of the carrier medium with hydrogen and for catalyzing the discharge of hydrogen from the loaded carrier medium
Implementation Method 2
a heat exchanger for efficient heat management
Implementation Method 3
LOHC loading by a catalytic hydrogenation reaction
Implementation Method 4
LOHC unloading by a catalytic dehydrogenation reaction
Data Source
Figure 1
Figure 2
AI summary
An installation for storing energy comprises a loading/unloading unit (8) for hydrogen which has a reaction container (7) in which a carrier medium is loaded with hydrogen and the hydrogen is unloaded from the loaded carrier medium.