Arc-Type Plasma Device for Nitrogen Oxide Production
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Solution Overview
Problem
Existing methods for producing nitrogen oxide using microwave plasma generating devices are costly, complex, and inefficient, with poor mobility and low electrical energy efficiency, emitting high-temperature flames and requiring extensive cooling.
Innovation Solution
An arc-type plasma generating device with internal and external electrodes is used to control nitrogen oxide production by adjusting the flow rate and energy input of injected gases, such as oxygen and nitrogen, to optimize nitrogen oxide concentration and reduce costs, featuring a simpler design that eliminates the need for auxiliary devices like tuners and cooling systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a microwave plasma generating device is used to produce nitrogen oxide, then nitrogen oxide can be produced, but the device is expensive, complex, and has poor mobility
Solution Approach 1:
The invention extracts and eliminates the complex microwave matching structure and auxiliary tuner devices from the plasma generating system, replacing them with a simplified arc-type plasma generation approach that achieves nitrogen oxide production without the cumbersome microwave components
Solution Approach 2:
The invention replaces expensive microwave plasma generating devices with a more economical arc-type plasma generating device that uses readily available components, significantly reducing system cost while maintaining nitrogen oxide production capability
2Quantity of substance
If a microwave plasma generating device is used to produce nitrogen oxide, then nitrogen oxide can be produced, but the device is bulky and has poor mobility
Solution Approach 1:
The invention removes the bulky microwave generating components and matching structures from the system, replacing them with a compact arc-type plasma generation setup that maintains nitrogen oxide production while dramatically reducing device weight and size for improved mobility
3Temperature
If a microwave plasma generating device emits high-temperature flames, then plasma is generated, but the capacity of cooling device needs to be increased
Solution Approach 1:
The invention extracts and eliminates the need for extensive cooling devices by replacing the high-temperature microwave plasma generation method with an arc-type plasma method that operates at lower temperatures, thereby removing the requirement for large-capacity cooling systems
4Quantity of substance
If a microwave plasma generating device is used, then nitrogen oxide can be produced, but electrical energy efficiency is low due to energy lost in magnetron heat
Solution Approach 1:
The invention converts the harmful magnetron heat loss in microwave plasma generation into a beneficial low-temperature arc-type plasma process, where the energy that would otherwise be wasted as heat is instead used efficiently to generate nitrogen oxide through arc discharge between electrodes
Solution Approach 2:
The invention changes the fundamental operating parameters from microwave frequency electromagnetic radiation to direct current arc discharge, fundamentally altering the energy conversion mechanism to eliminate magnetron heat losses and improve electrical energy efficiency
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 achieves higher nitrogen oxide production efficiency with reduced costs and improved mobility, maximizing nitrogen oxide concentration while minimizing energy input and eliminating the need for bulky, expensive microwave systems.
Implementation Method 1
applies voltage to the internal electrode and the external electrode to generate an arc-type plasma including nitrogen oxide
Implementation Method 2
generate an arc-type plasma including nitrogen oxide by oxygen, nitrogen, or a mixture gas
Data Source
AI summary
A method for controlling nitrogen oxide (NOx) includes adjusting a flow rate of d gas injected into an arc-type plasma generating device, and identifying a concentration of the generated nitrogen oxide, while adjusting an amount of energy per unit flow rate of the injected gas.