Single-Stage Air Scrubbing for NOx and SOx Conversion
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Solution Overview
Problem
Current methods for removing nitrogen oxides (NOx) and sulfur oxides (SOx) from industrial waste gases are often energy-intensive, bulky, and require multiple stages, making them inefficient and costly for industrial-scale applications.
Innovation Solution
A single-stage air scrubbing apparatus using chlorine dioxide (ClO2) to react with NOx and SOx, introducing turbulence to enhance conversion efficiency, which can operate at various humidity levels and as a cost-effective, easy-to-install solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional multi-stage methods are used to remove NOx and SOx, then removal effectiveness is improved, but device complexity and operational costs increase
Solution Approach 1:
The patent combines multiple pollutant removal functions into a single reaction chamber where chlorine dioxide simultaneously oxidizes both NOx and SOx. This merging of multiple treatment stages into one integrated system reduces device complexity while maintaining removal effectiveness through the versatile oxidizing capability of chlorine dioxide
Solution Approach 2:
Chlorine dioxide serves as a universal oxidizing agent that can treat multiple types of pollutants (NOx and SOx) in a single process. This multi-functionality eliminates the need for separate treatment stages for different pollutants, simplifying the overall system while achieving comprehensive pollutant removal
2Reliability
If conventional methods are used to remove NOx and SOx, then pollutant conversion is achieved, but energy consumption increases
Solution Approach 1:
The patent changes the chemical parameter by using chlorine dioxide as the oxidizing agent instead of conventional methods. This parameter change enables effective pollutant conversion at lower energy consumption because chlorine dioxide reacts more efficiently with both NOx and SOx, reducing the energy input required for the oxidation process
3Productivity
If turbulence is introduced to enhance conversion, then reaction efficiency is improved, but device complexity increases
Solution Approach 1:
The patent introduces mechanical turbulence into the reaction chamber to enhance mixing and contact between chlorine dioxide and pollutants. This turbulence, achieved through simple mechanical means such as injection patterns or chamber design, improves reaction efficiency by increasing the interfacial area and mass transfer rate without requiring complex turbulence induction mechanisms
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 conversion rates of NOx and SOx into non-pollutant compounds with a single-stage process, reducing energy consumption and operational costs while being compact and easy to maintain.
Implementation Method 1
A single-stage air scrubbing apparatus using chlorine dioxide (ClO2) to react with NOx and SOx
Implementation Method 2
introducing turbulence to enhance conversion efficiency
Data Source
AI summary
Methods related generally to the removal of atmospheric pollutants from the gas phase, are provided, as well as related apparatus, processes and uses thereof. A single-stage air scrubbing apparatus is provided that includes at least one reaction vessel, at least one introduction duct, and a turbulence component, wherein a residence time is sufficient to allow the conversion of at least one atmospheric pollution compound to at least one other compound, molecule or atom. In some embodiments, the at least one atmospheric pollution compound comprises nitrogen oxide, sulfur oxide or a combination thereof. Additionally, methods of removing atmospheric pollution compounds from a waste gas stream are disclosed that include introducing a waste gas stream and at least one additional gas stream, mist stream, liquid stream or combination thereof into a single-stage air scrubbing apparatus at a flow rate sufficient to allow for conversion of the at least one atmospheric pollution compound.