Air purification device, containment and use thereof
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Solution Overview
Problem
Existing air purification devices for decontamination in insulators face challenges with non-homogeneous catalyst distribution, leading to inefficiencies in gas and liquid flow, increased pressure loss, and reduced energy efficiency.
Innovation Solution
The air purification device features a catalyst covered by a grille in the flow cross-section, allowing gas and/or liquid to flow through, maintaining catalyst integrity and facilitating easy processing and use in various configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If granular catalyst material is used in bulk form, then the catalyst can be easily processed and installed, but the porosity homogeneity and reproducibility cannot be guaranteed, leading to non-uniform gas flow and increased pressure drop
Solution Approach 1:
The patent uses a porous support structure (foam material or ceramic foam) as the catalyst carrier, which provides inherently homogeneous porosity and uniform gas flow distribution throughout the catalyst bed, eliminating the non-uniform porosity problem associated with granular catalyst materials
Solution Approach 2:
The patent combines catalyst material with a porous support structure (foam or ceramic foam) to create a composite catalyst system. This composite structure integrates the catalytic function with the structural benefits of homogeneous porosity and mechanical stability, resolving the contradiction between ease of installation and porosity homogeneity
2Reliability
If bed height is increased to maintain constant cross-section and compensate for reduced effective cross-section, then process reliability is improved, but pressure drop during flow through the fixed-bed catalyst increases, reducing energy efficiency
Solution Approach 1:
The porous support structure provides a large effective cross-section for gas flow while maintaining structural integrity, allowing for shorter bed heights that reduce pressure drop while still ensuring process reliability through uniform flow distribution
Solution Approach 2:
The patent transitions from a traditional vertical fixed-bed configuration to a horizontal or inclined configuration with porous support, changing the dimensional arrangement of the catalyst bed. This dimensional change allows for reduced bed height while maintaining constant cross-section, thereby reducing pressure drop without compromising reliability
3Stability of the object's composition
If vibrations occur in the packed bed, then the bed may compact, leading to changes in bed height and porosity, but increasing bed height to compensate requires more catalyst material and increases pressure drop
Solution Approach 1:
The porous support structure (foam or ceramic foam) provides inherent mechanical stability and resistance to compaction from vibrations, maintaining constant bed height and porosity without requiring additional catalyst material or increased bed height
Solution Approach 2:
The composite structure of catalyst on porous support creates a mechanically robust system that resists vibration-induced compaction, maintaining stable bed dimensions and porosity without needing excess catalyst material for compensation
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 design ensures homogeneous catalyst distribution, reduces pressure loss, and enhances energy efficiency while protecting the catalyst and preventing direct contact with harmful substances.
Implementation Method 1
A catalyst is used to break down the substances to such an extent that they pose no health risk to the operating personnel after decontamination
Implementation Method 2
This open-pore structure can form a large surface area for a catalyst, which, due to its open porosity, is and remains readily permeable
Implementation Method 3
the porous support can be produced by sintering a preferably organic foam material impregnated with a ceramic solution. During sintering, the ceramic solution solidifies, and the organic foam material, for example, decomposes or disappears or sublimes
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The invention relates to an air purification device (1) in a containment, in particular an insulator, with a catalyst (2) arranged on the surface of a porous support (3) and preferably covered on both sides by a grid in a flow cross-section (5). The invention is used for the removal of hydrogen peroxide. The invention further relates to a containment in which the air purification device (1) is integrated into the recirculation circuit of the containment.