Nitrogen Oxide Reduction via Rapid Gas Cooling
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Solution Overview
Problem
Current methods for reducing nitrogen oxide in plasma-generated gases are not cost-effective and can lead to the generation of other toxic substances when oxygen-containing materials are avoided, resulting in decreased processing efficiency.
Innovation Solution
A gas treating apparatus with a nitrogen oxide reduction apparatus that rapidly cools plasma-processed gases using a cooling unit to a temperature below the nitrogen oxide generation temperature, combined with a plasma generating apparatus stabilized by magnetic force generators to prevent vortex-induced plasma instability and extend electrode lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a catalytic device or dilution device is used to process nitrogen oxide, then nitrogen oxide can be reduced, but the cost-effectiveness deteriorates
Solution Approach 1:
The invention changes the temperature parameter by rapidly cooling the processed gas from high temperature (where NOx is generated) to low temperature (below NOx generation temperature). This parameter change allows nitrogen oxide reduction without requiring expensive catalytic or dilution devices, thereby resolving the contradiction between harmful factor reduction and cost-effectiveness
2Object-generated harmful factors
If oxygen-containing materials are avoided to prevent nitrogen oxide generation, then nitrogen oxide production is reduced, but harmful gas processing efficiency deteriorates due to deposition of toxic substances
Solution Approach 1:
The invention performs preliminary action by rapidly cooling the gas immediately after plasma processing, before nitrogen oxide can form or deposit. This preliminary cooling action prevents nitrogen oxide generation while maintaining the high temperature plasma processing efficiency, resolving the contradiction between preventing harmful factor generation and maintaining productivity
3Productivity
If the plasma generating apparatus operates at high temperature to decompose harmful gases, then harmful gas processing efficiency is improved, but nitrogen oxide generation increases
Solution Approach 1:
The invention segments the gas treatment process into two distinct stages: (1) high-temperature plasma processing stage for harmful gas decomposition, and (2) rapid cooling stage for nitrogen oxide prevention. This segmentation allows the system to achieve high processing efficiency while eliminating nitrogen oxide generation, resolving the contradiction between productivity and harmful factor production
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
Effectively reduces nitrogen oxide without decreasing harmful gas processing efficiency and enhances the stability and durability of the plasma generating apparatus, preventing nitrogen oxide generation and extending the lifespan of components.
Implementation Method 1
a cooling unit configured to cool the processed gas to a temperature lower than a nitrogen oxide generation temperature
Implementation Method 2
arranging the magnetic force generators to produce a force opposite the rotational direction of the vortex of the plasma generating gas
Data Source
AI summary
A gas treating apparatus may include a reaction chamber configured to process a gas supplied from an outside by a plasma, the processed gas containing a nitrogen oxide, and a nitrogen oxide reduction apparatus connected to the reaction chamber. The nitrogen oxide reduction apparatus includes a cooling unit configured to cool the processed gas to a temperature lower than a nitrogen oxide generation temperature.