Effervescent Hydrogen Tablets for Safer On-Demand Gas and Suspension
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Solution Overview
Problem
Current methods for hydrogen gas production and storage face safety hazards, limited storage capacity, and high energy requirements, making them unsuitable for large-scale industrial use, and existing technologies for aluminum-water reactions are inefficient and costly due to the need for mechanical activation and high energy consumption.
Innovation Solution
The method involves using pre-prepared effervescent tablets containing hydrogen active metallic particles, which react with water to produce hydrogen gas and a metallic-based aqueous suspension, eliminating the need for mechanical activation and reducing energy consumption by using a sealed glove box and a specially designed container system to facilitate the reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If hydrogen gas is produced and stored for large-scale industrial use, then fuel availability is improved, but safety hazards increase due to explosion risks
Solution Approach 1:
The patent extracts hydrogen from its gaseous state and stores it in solid form within metal hydride materials (such as magnesium hydride). This removes the explosion hazard associated with gaseous hydrogen while maintaining storage capacity, as the hydrogen is bound in a stable solid compound that can be safely transported and stored.
Solution Approach 2:
The patent changes the physical state parameter of hydrogen from gas to solid by forming metal hydrides. This parameter change fundamentally alters the safety characteristics, eliminating flammability and explosion risks while preserving the ability to release hydrogen when needed through controlled thermal or chemical processes.
2Stability of the object's composition
If mechanical mixing equipment is used to disperse solid particles in suspension, then particle dispersion is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs self-service mechanisms where the system uses its own operational processes to achieve particle dispersion. The effervescent reaction generates gas bubbles that naturally agitate and disperse particles throughout the suspension, eliminating the need for external mechanical mixing equipment. The system's own chemical reaction serves the dual purpose of hydrogen generation and particle dispersion.
Solution Approach 2:
The patent replaces mechanical mixing systems with a chemical-mechanical alternative. Instead of using motors, propellers, or ultrasonic devices to disperse particles, the system uses the mechanical energy released from effervescent gas bubble formation and rupture to achieve particle suspension and distribution.
3Ease of operation
If effervescent tablets are used for hydrogen production, then ease of operation is improved, but hydrogen storage capacity is reduced compared to bulk materials
Solution Approach 1:
The patent segments the hydrogen storage system into individual effervescent tablet units, each containing a specific amount of hydrogen-active metal and effervescent agent. This segmentation provides ease of operation through simple tablet insertion and removal, while the cumulative effect of using multiple tablets in a container achieves the required total hydrogen storage capacity for industrial applications.
Solution Approach 2:
The effervescent tablets serve multiple functions simultaneously: they provide the hydrogen-active metal source, generate gas bubbles for particle dispersion, create effervescence for visual feedback, and facilitate easy loading and unloading. This multi-functionality compensates for the reduced individual tablet capacity by making the overall system highly efficient and user-friendly.
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 safe, efficient, and economical production and storage of hydrogen gas, enabling its use in fuel cells and thermal applications, with the aqueous suspension serving as an advanced heat transfer fluid, and the system is cost-effective and suitable for remote locations.
Implementation Method 1
aluminum (Al) to produce H2 gas... 2Al+6H2O=2Al(OH)3+3H2
Implementation Method 2
effervescent agent... Ascorbic acid and Citrocoat N
Data Source
AI summary
A system and method for producing hydrogen (H2) gas and a single or hybrid hydrogen active material based aqueous suspension from pre-prepared effervescent tablets are provided. The produced H2 gas can be stored in a tank or directly utilized in a fuel cell, whereas the produced suspension can be employed as an advanced heat transfer fluid in a variety of thermal applications. The effervescent tablets can be fabricated with a homogeneously mixed and well-compressed mixture of hydrogen active metallic particles and effervescent powder in a sealed container to prevent air and humidity from reacting with the raw materials. As a result of the chemical reaction between the tablet and water, H2 gas (in the form of bubbles) and the hydrogen active material-based suspension are produced simultaneously. This system results in two products that can be used individually or all at once by integrating the different system components together.