Resonant Thermal Dissociation Chamber for Low-Recombination Gas Splitting
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Solution Overview
Problem
Existing methods for dissociating gas media, such as water vapor or carbon dioxide, are energy-intensive and inefficient, with significant recombination of products and high power consumption, and lack cost-effective alternatives.
Innovation Solution
A device and method that utilizes thermal energy to dissociate gas media by maintaining a rarefied pressure in a vacuum chamber and irradiating with resonance frequencies, minimizing collisions and recombination, using a radiator with emission spectral lines matching the absorption lines of the gas medium, and employing electrostatic separation of products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If thermal energy is used to dissociate gas medium molecules, then energy utilization efficiency for dissociation is improved, but recombination of dissociation products occurs significantly
Solution Approach 1:
The device separates the dissociation chamber into distinct zones: a rarefied gas zone for dissociation and a condensed phase zone for product collection. This spatial segmentation prevents recombination by physically isolating dissociated atoms in the rarefied zone while collecting products in the condensed zone, thereby maintaining high energy utilization efficiency while minimizing recombination losses.
Solution Approach 2:
The patent utilizes pressure parameter changes to control the dissociation process. By maintaining rarefied pressure conditions in the dissociation chamber, the mean free path of molecules increases, reducing collision frequency and preventing recombination. The pressure gradient also drives dissociated products toward the condensed phase region, further minimizing recombination losses and improving overall energy efficiency.
2Temperature
If high temperature heating is used to achieve dissociation, then dissociation temperature is reached, but energy consumption increases significantly
Solution Approach 1:
The device exploits phase transitions of the working gas to achieve dissociation at lower temperatures. By controlling pressure and temperature to induce phase changes between rarefied gas and condensed phases, the system achieves molecular dissociation without requiring extreme high-temperature heating, thereby significantly reducing energy consumption while still reaching effective dissociation temperatures.
Solution Approach 2:
The system employs periodic cycling between rarefied and condensed phases to achieve dissociation. During rarefied phases, dissociation occurs at moderate temperatures; during condensed phases, products are collected and separated. This periodic action allows the system to reach dissociation temperatures efficiently without sustained high-temperature heating, reducing overall power consumption.
3Productivity
If centrifugal separation is used to separate hydrogen and oxygen, then radial stratification occurs, but device complexity increases
Solution Approach 1:
The patent combines the separation function with the existing centrifugal pumping system used for product withdrawal. The same centrifugal force that drives product removal also provides radial stratification for separation, merging two functions into one system. This approach achieves effective hydrogen-oxygen separation without adding separate complex separation equipment, thereby maintaining productivity while minimizing device complexity.
4Productivity
If pre-conditioning of water is applied to reduce pH, then photodissociation efficiency is improved, but process complexity increases
Solution Approach 1:
The system achieves pH adjustment and water pre-conditioning through self-service mechanisms within the rarefied gas chamber. The controlled rarefaction process itself creates conditions that facilitate spontaneous dissociation without requiring external pH adjustment equipment or complex pre-treatment systems. The rarefied environment naturally promotes dissociation efficiency while avoiding additional process complexity.
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
Enhances energy utilization efficiency for dissociation while minimizing recombination, allowing for cost-effective production of hydrogen and oxygen from water vapor or oxygen and carbon from carbon dioxide, with potential applications in hydrogen refueling, solar concentrators, and energy storage.
Implementation Method 1
at least one emission spectral line of a radiator, in a temperature range of between 350° C. and 1500° C., at least partially corresponds to the absorption spectral line of the molecules of the gas medium
Implementation Method 2
irradiating with resonance frequencies
Implementation Method 3
maintaining a rarefied pressure in a vacuum chamber
Implementation Method 4
employing electrostatic separation of products
Data Source
AI summary
A device (1) and method are claimed for converting thermal energy into dissociation energy of molecules of a gas medium (3). The device incorporates a reaction vacuum chamber (2), designed to enable a gas medium (3) to be supplied therein, at least one thermal radiator (4), of which at least one emission spectral line of a medium (5), in the temperature range 350° C. to 1500° C., at least partially corresponds to the absorption spectral line of molecules of the gas medium (3). At least part of the volume of the vacuum chamber (2) is positioned in the zone of optical visibility of the radiator (4) and is a reaction volume (7) for the gas medium (3), in which reaction volume, as a result of resonance oscillations of molecules of the gas medium (3), excited by the radiator (4), at least partial dissociation of the gas medium (3) takes place. The device also incorporates a system (8) for drawing off at least one product of dissociation of molecules of the gas medium (3).