Ozone Generation System Nitrogen Control
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Solution Overview
Problem
Conventional ozone generation systems face issues with by-product generation due to added nitrogen gas, leading to decreased ozone concentration and apparatus corrosion, while nitrogen-free systems suffer from uneven photocatalytic effects and ozone concentration fluctuations.
Innovation Solution
An ozone generation system with a gas flow rate adjustment apparatus that controls the flow rates of oxygen and nitrogen to produce a raw material gas with a nitrogen addition rate between 0 and 100 PPM, stabilizing the ozone generation process and reducing by-product formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nitrogen gas is added to oxygen gas to generate high-concentration ozone, then ozone generation efficiency is improved, but by-product generation increases and apparatus corrosion occurs
Solution Approach 1:
The patent changes the parameter of nitrogen addition rate from conventional high concentrations (several hundred to several thousand PPM) to a controlled low range (0-100 PPM). This parameter change allows the system to maintain sufficient ozone generation efficiency while significantly reducing by-product formation and corrosion, as demonstrated by the experimental data showing ozone concentration remains high even at 0 PPM nitrogen addition
2Productivity
If nitrogen gas is added to oxygen gas to generate high-concentration ozone, then ozone generation efficiency is improved, but apparatus corrosion occurs
Solution Approach 1:
By reducing the nitrogen addition rate parameter from conventional high levels to 0-100 PPM, the patent minimizes the formation of corrosive by-products. The experimental results confirm that even at 0 PPM nitrogen addition, high-concentration ozone can be generated without the corrosion problems associated with conventional nitrogen addition methods, thereby extending apparatus lifespan
3Object-generated harmful factors
If nitrogen-free oxygen gas is used to avoid by-products, then by-product generation is suppressed, but ozone concentration stability decreases due to uneven photocatalytic effects
Solution Approach 1:
The patent introduces a controlled amount of nitrogen (0-100 PPM) as a parameter change that stabilizes the photocatalytic process. The experimental data shows that this controlled nitrogen addition creates more uniform discharge characteristics and stabilizes ozone concentration, while the low nitrogen level keeps by-product generation minimal. This resolves the contradiction by finding an optimal parameter value that balances both requirements
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 suppresses by-product generation, maintains high ozone concentration stability, and prevents corrosion, resulting in improved ozone treatment quality and extended system lifespan.
Implementation Method 1
In the ozone generation apparatus, an ozone gas is generated from the raw material gas by using a silent discharge
Implementation Method 2
The theory of particle collisional dissociation explains a detailed mechanism for generating a high-concentration ozone gas from an oxygen gas containing a nitrogen gas added thereto
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
An object of the present invention is to provide a low-cost ozone generation system that enables suppression of generation of a by-product. In the present invention, a gas flow rate adjustment apparatus (7) that outputs a raw material gas to an ozone generation apparatus (1) is provided. The gas flow rate adjustment apparatus (7) includes a plurality of flow rate adjustment parts (71, 72, 73, 75), and outputs a second mixed gas serving as the raw material gas to the ozone generation apparatus (1). The second mixed gas includes an oxygen gas outputted from a first oxygen flow rate adjustment part (71) and a first mixed gas outputted from a mixed gas flow rate adjustment part (75). The raw material gas generated by the gas flow rate adjustment apparatus (7), which includes an oxygen gas and a nitrogen gas, contains the nitrogen gas added to the oxygen gas with the rate of addition being in a range of more than 0 PPM and not more than 100 PPM.