Multi-Stage Gas Purification Using Light and Catalytic Oxidation
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Solution Overview
Problem
Existing gas purification technologies are inadequate in effectively removing harmful ingredients and biological pollutants from gases to meet stringent emission and indoor air quality standards.
Innovation Solution
A multi-stage gas purification system comprising a light oxidation reactor, catalytic ozone oxidation reactor, photocatalytic reactor, and heating catalytic reactor, utilizing vacuum ultraviolet and ultraviolet lights, ozone oxidation catalysts, photocatalysts, and thermal catalysts, with microwave excitation for enhanced purification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-stage purification method is used, then the device complexity is low, but the purification effectiveness is insufficient to meet stringent emission and indoor air quality standards
Solution Approach 1:
The gas purification system is divided into three independent reaction chambers: a light oxidation reactor for initial decomposition, a catalytic ozone oxidation reactor for intermediate treatment, and a photocatalytic reactor for final purification. Each chamber performs a specific purification function, allowing the system to achieve high removal efficiency for harmful ingredients while maintaining modular complexity that simplifies operation and maintenance.
2Reliability
If multiple purification stages are implemented, then the purification effectiveness improves, but the device complexity increases
Solution Approach 1:
The light source serves multiple functions: it provides illumination for the light oxidation reactor, generates vacuum ultraviolet light for the photocatalytic reactor through the light transmittance component, and activates the photocatalyst in the third chamber. This multi-functionality reduces the number of separate components needed, thereby lowering device complexity while maintaining three-stage purification effectiveness.
3Productivity
If a light transmittance component is introduced to enable light passage between reactors, then the photocatalytic reaction efficiency improves, but the device complexity increases
Solution Approach 1:
The light transmittance component serves dual purposes: it acts as a structural separator between the light oxidation reactor and photocatalytic reactor, and simultaneously functions as a light guide that transmits vacuum ultraviolet light from the light source to activate the photocatalyst. This eliminates the need for separate light guides or windows, reducing overall device complexity while enabling efficient photocatalytic reactions.
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
Achieves high mineralization rates of volatile organic compounds and kill rates of bacteria, yeast, viruses, and mold, exceeding 90%, while meeting stringent discharge requirements and improving indoor air quality.
Implementation Method 1
a light source being disposed in the light oxidation reactor, the light source being configured to emit first light... the light oxidation reactor being configured to perform a first-stage purification treatment on a gas under irradiation of the first light; the first light is vacuum ultraviolet (UV) light
Implementation Method 2
the light oxidation reactor being configured to perform a first-stage purification treatment on a gas under irradiation of the first light
Implementation Method 3
a catalytic ozone oxidation reactor that is filled with an ozone oxidation catalyst... the catalytic ozone oxidation reactor being configured for second-stage purification treatment of the gas
Implementation Method 4
a photocatalytic reactor that is filled with a photocatalyst... the photocatalytic reactor being configured to perform a third-stage purification treatment on the gas under irradiation of the second light
Implementation Method 5
the photocatalytic reactor and the light oxide reactor are separated by a light transmittance component, so that the second light passes through the light transmittance component into the photocatalytic reactor
Data Source
AI summary
A device for gas purification treatment may include: a light oxidation reactor, a light source being disposed in the light oxidation reactor, the light source being configured to emit first light and second light, the light oxidation reactor being configured to perform a first-stage purification treatment on a gas under irradiation of the first light; a catalytic ozone oxidation reactor configured for second-stage purification treatment of the gas; a photocatalytic reactor configured to perform a third-stage purification treatment on the gas under irradiation of the second light; wherein, the photocatalytic reactor is adjacent to the light oxide reactor, and the photocatalytic reactor and the light oxide reactor are separated by a light transmittance component, so that the second light passes through the light transmittance component into the photocatalytic reactor.