Porous Ceramic Catalyst Support for Low-Pressure-Drop Air Cleaning
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Solution Overview
Problem
Existing air cleaning devices for decontamination in isolators face challenges with homogeneity and reproducibility of porosity in catalyst beds, leading to altered bed height and porosity, and resulting in high pressure drops and reduced energy efficiency.
Innovation Solution
The air cleaning device features a catalyst covered by at least one grid in the flow cross section, allowing gas and/or liquid to flow through, preventing compaction, and providing touch protection. The porous support is created by sintering an organic foam material with a ceramic solution, resulting in an open-pore structure with high fracture resistance and low weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bulk material catalyst is used for decontamination, then the catalyst can effectively degrade harmful substances, but the bed undergoes compaction leading to altered porosity and high pressure drop
Solution Approach 1:
The patent applies porous ceramic foam material as the catalyst support structure. This foam material maintains stable porosity and prevents bed compaction while allowing gas flow through its open-cell structure, thereby reducing pressure drop compared to bulk material catalysts that compact over time
Solution Approach 2:
The patent uses a composite structure combining ceramic foam material with catalyst coating. The ceramic foam provides structural stability and porosity, while the catalyst layer performs the decontamination function, creating a material that combines the benefits of both structural integrity and catalytic activity
2Reliability
If bulk material catalyst is used, then decontamination function is achieved, but homogeneity and reproducibility of porosity cannot be assured
Solution Approach 1:
The ceramic foam material is manufactured with controlled and uniform cell structure, ensuring homogeneous porosity throughout the catalyst bed. This eliminates the variability inherent in bulk material packing while maintaining the necessary porosity for gas flow and catalytic activity
3Object-affected harmful factors
If grid is added to cover catalyst, then touch protection and prevention of compaction is achieved, but device complexity increases
Solution Approach 1:
The grid structure serves multiple functions simultaneously: it provides touch protection by preventing direct contact with the catalyst, supports the catalyst layer to prevent compaction, and maintains the structural integrity of the air cleaning device. This multi-functionality reduces the need for additional separate components
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 configuration ensures durable, non-compacted catalyst presentation with improved processability and energy efficiency, effectively degrading harmful substances while preventing direct contact with hazardous catalysts.
Implementation Method 1
a catalyst (2) which is disposed on a surface of a porous support (3) and is preferably covered by a grid (4) in a flow cross section (5)
Implementation Method 2
The porous support has been created by sintering a preferably organic foam material soaked with a ceramic solution. During the sintering, the ceramic solution is consolidated, and the organic foam material, for example, is broken down or disappears or sublimes, so as to give rise to an open-pore structure.
Implementation Method 3
The porous support has been created by sintering a preferably organic foam material soaked with a ceramic solution. During the sintering, the ceramic solution is consolidated
Implementation Method 4
the organic foam material, for example, is broken down or disappears or sublimes
Data Source
AI summary
An air cleaning device (1) in a containment, especially isolator, is provided which includes a catalyst (2) which is disposed on a surface of a porous support (3) and is covered by a grid, preferably on both sides, in a flow cross section (5). The air cleaning device is used for elimination of hydrogen peroxide. A containment in which the air cleaning device (1) is incorporated into the circulation circuit of the containment is also provided.