Composite Air Purification Material for Low Resistance SO2 Removal
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Solution Overview
Problem
Current air purification methods, such as adsorption and chemical reaction methods, face limitations including high costs, high energy consumption, large apparatus requirements, and difficulty in maintaining low sulfur dioxide concentrations in high-tech environments like electronic factories and data centers, especially under large air volume conditions.
Innovation Solution
A composite air purification material comprising an open-cell polyurethane foam net coated with a mixture of diatomite, an alkali solution, and an adhesive, which provides high treatment efficiency and low energy consumption, maintaining filtration efficiency over time without significant resistance increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adsorption materials (activated carbon, alumina) are used for air purification, then purification efficiency is improved, but resistance increases and energy consumption increases
Solution Approach 1:
The patent uses a composite material combining activated carbon particles (0.1-5mm) with a porous substrate having high permeability. This composite structure maintains purification efficiency through the activated carbon while the porous substrate minimizes resistance and energy consumption by allowing easier air flow through the filtration system.
Solution Approach 2:
The patent employs a porous substrate as the base material for the filtration layer. This porous structure provides high permeability that reduces air flow resistance while still supporting the activated carbon particles, thereby lowering the energy consumption required for ventilation without sacrificing purification efficiency.
2Reliability
If impregnated activated carbon or alumina is used, then purification efficiency is improved, but resistance increases excessively
Solution Approach 1:
The patent creates a composite where activated carbon particles are distributed on a porous substrate rather than impregnating the carbon itself. This approach maintains the high purification efficiency of activated carbon while the porous substrate structure prevents excessive resistance by providing open pathways for air flow.
Solution Approach 2:
The patent applies different properties to different components: the activated carbon particles provide localized high purification efficiency at contact points, while the porous substrate provides localized high permeability in the bulk structure, achieving both high purification and low resistance simultaneously.
3Reliability
If industrial chemical reaction methods are used, then purification efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex industrial chemical reaction systems (spray towers, chemical reactors) with a simpler physical adsorption system using activated carbon on a porous substrate. This substitution achieves high purification efficiency through passive adsorption rather than requiring complex chemical reaction apparatus, thereby reducing device complexity and cost.
Solution Approach 2:
The patent uses a simple, replaceable filtration layer consisting of activated carbon particles on a porous substrate, which can be easily installed and replaced without complex machinery. This approach replaces expensive, complex industrial chemical reaction equipment with affordable, simple adsorption media, reducing both device complexity and operational cost.
4Reliability
If existing adsorption materials are used, then purification efficiency is improved, but service life decreases due to rapid reduction of purification effect
Solution Approach 1:
The patent combines activated carbon particles with a durable porous substrate that provides structural support and stability. This composite structure prevents the activated carbon from degrading or compacting over time, maintaining high purification efficiency throughout the service life and preventing rapid reduction of purification effect.
Solution Approach 2:
The porous substrate acts as a protective cushioning structure that prevents the activated carbon particles from collapsing or losing their adsorptive properties under operational stress. This pre-established protective structure ensures the activated carbon maintains its effectiveness throughout the intended service life, preventing premature performance degradation.
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
The composite material effectively reduces sulfur dioxide concentrations to below 10 ppb at high air volumes, meeting stringent standards with reduced energy consumption and operational costs, and can be used in large-scale precision environments.
Implementation Method 1
The porous foam material is an open-cell polyurethane foam net
Implementation Method 2
the adsorptive material is diatomite
Implementation Method 3
the treating agent is alkali solution
Implementation Method 4
including an adsorptive material, a treating agent and an adhesive
Data Source
AI summary
A composite material for purifying air includes a porous foam material which is an open-cell polyurethane foam net; and a mixture sprayed on the interior and/or the surface of the porous foam material, the mixture including an absorbent material, a treating agent and an adhesive; wherein the adsorptive material is diatomite, and the treating agent is alkali solution.