Laser-Heated Cavity System for High-Temperature Catalysis
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Solution Overview
Problem
Current catalytic reaction cavities face limitations in achieving high temperatures and pressures due to the use of electric filaments, which are prone to damage and restrict the pressure and temperature levels that can be reached, necessitating a more robust and efficient heating method.
Innovation Solution
A laser-heated cavity system is designed with a first vacuum cavity and a second high-pressure cavity, where a laser heating assembly focuses laser beams onto a sample bearer, allowing for temperatures exceeding 1000°C and pressures up to 30 atm, eliminating the need for insulation materials and extending the lifespan of the heating apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an electric filament is used for heating the sample, then the sample can be heated to the required reaction temperature, but the filament is prone to damage at high temperatures and has limited service life
Solution Approach 1:
The patent replaces the electric filament heating system with a laser heating system. The laser beam directly heats the sample without requiring a physical filament that is exposed to high temperatures and reactive gases. This substitution eliminates the filament's susceptibility to damage and extends the heating system's service life while maintaining the capability to achieve high temperatures.
Solution Approach 2:
The patent introduces a window as an intermediary component that allows the laser beam to pass through and reach the sample. This window acts as a mediator between the external laser source and the internal sample environment, enabling laser heating while maintaining the sealed cavity structure and protecting the laser system from the harsh reaction conditions.
2Temperature
If an electric filament is mounted inside the reaction cavity, then heating can be achieved, but insulation material is required which limits the maximum pressure in the cavity
Solution Approach 1:
The patent replaces the electric filament with an external laser heating system. Since the laser beam can pass through the window into the cavity without requiring physical insulation of heating components, the cavity can be sealed and pressurized to much higher levels. This eliminates the pressure limitation imposed by insulation material requirements.
Solution Approach 2:
The patent extracts the heating function from inside the reaction cavity by using an external laser source. The laser heating assembly is positioned outside the cavity, and only the laser beam (optical energy) needs to penetrate through the window to reach the sample. This removal of physical heating components from the high-pressure environment eliminates the need for pressure-resistant insulation materials.
3Temperature
If an electric filament is used for heating, then the sample can reach the required temperature, but the filament cannot put all output power into sample heating due to insulation requirements
Solution Approach 1:
The patent replaces the electric filament with a laser heating system that can direct nearly all of its output power to the sample. The laser beam can be precisely focused on the sample through the window, minimizing energy loss to surrounding structures. This results in significantly improved heating efficiency compared to the filament system, where much of the electrical power was lost to insulation requirements and the filament's own thermal radiation.
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
The laser-heated cavity system efficiently achieves high-temperature and high-pressure conditions suitable for catalytic reactions, overcoming the limitations of electric filament heating by maintaining a vacuum state and enabling enhanced pressure levels without the drawbacks of filament-based systems.
Implementation Method 1
at least one laser beam provided by the laser heating assembly is passed through the first window and the second window, and then focused on the sample bearer
Implementation Method 2
at least one laser beam provided by the laser heating assembly is passed through the first window and the second window, and then focused on the sample bearer
Implementation Method 3
the first cavity is a vacuum cavity, and the pressure in the second cavity ranges from vacuum to 30 atm, for example, from 10−6 atm to 30 atm
Data Source
AI summary
A laser-heated cavity system includes: a first cavity provided with a first top end part and a first bottom end part that are arranged opposite each other; wherein the first top end part is provided with a first widow and the first bottom end part is provided with an opening; a second cavity disposed inside the first cavity, provided with a second top end part and a second bottom end part that are arranged opposite each other, and disposed with a second window and a sample bearer; a laser heating assembly disposed outside the first cavity; wherein at least one laser beam provided by the laser heating assembly is passed through the first and second windows, and then focused on the sample bearer; and a mobile platform assembly. The first cavity is a vacuum cavity, and the pressure in the second cavity ranges from vacuum to 30 atm.