Composite Adsorptive Filter Structures for Low Pressure Loss
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Solution Overview
Problem
Existing adsorption filter technologies face challenges in effectively combining adsorption properties with particle or aerosol filtration capabilities, often requiring additional carrier materials and suffering from high pressure loss, limited flexibility, and incomplete surface coverage, which hinders their use in mechanical stress conditions and comprehensive pollutant removal.
Innovation Solution
The development of adsorptive structures based on agglomerates of adsorber particles and fiber materials, where the particulate adsorption material and fiber material are fixed via a thermoplastic binder carrier, creating a multifunctional filter that combines adsorption and filtration properties in a single system, optimizing surface coverage and mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If small adsorber particles are used in loose beds, then adsorption efficiency is improved due to larger specific surface area, but pressure loss increases and channel formation is promoted
Solution Approach 1:
The adsorber particles are segmented into multiple functional zones: a hydrophobic outer shell for particle filtration, a hydrophilic intermediate layer for liquid absorption, and an adsorptive core for gas-phase contaminant removal. This segmentation allows each zone to perform its specific function optimally without interfering with others, resolving the contradiction between adsorption efficiency and pressure loss.
Solution Approach 2:
The invention uses composite particles combining multiple materials with different properties: hydrophobic materials (e.g., polyethylene, polypropylene) for the outer shell, hydrophilic materials (e.g., cellulose, starch) for the intermediate layer, and adsorptive materials (e.g., activated carbon, zeolite) for the core. This composite structure enables simultaneous particle filtration and adsorption while maintaining low pressure loss.
2Loss of energy
If larger adsorber particles are used, then pressure loss is reduced, but adsorption efficiency decreases due to smaller specific surface area
Solution Approach 1:
Different regions of the particle have different properties optimized for specific functions: the outer shell is hydrophobic for particle capture, the intermediate layer is hydrophilic for liquid management, and the core is highly adsorptive for gas-phase contaminants. This local quality optimization allows the particle to maintain high adsorption efficiency while the overall particle size is large enough to minimize pressure loss.
3Stability of the object's composition
If additional carrier materials are used to fix adsorber particles, then particle stability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention merges the carrier function with the adsorber particle itself by creating a multi-layer composite structure where the hydrophobic shell and hydrophilic layer serve both structural support and functional roles. This eliminates the need for separate carrier materials, reducing device complexity while maintaining particle stability through the integrated multi-layer design.
4Manufacturing precision
If adsorber particles are used for gas-phase adsorption, then adsorption of poisonous substances and odors is improved, but particle and aerosol filtration capability is insufficient
Solution Approach 1:
The composite particle is designed to perform multiple functions: the hydrophobic outer shell captures particles and aerosols through hydrophobic interaction, the hydrophilic intermediate layer absorbs liquid droplets, and the adsorptive core removes gas-phase contaminants. This multi-functionality allows a single particle type to handle diverse pollutants including particles, aerosols, liquids, and gases simultaneously.
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 resulting adsorptive structures exhibit improved flow capacity, reduced pressure loss, and enhanced filtration efficiency, enabling effective protection against chemical and biological toxins, aerosols, and particles while maintaining mechanical stability and flexibility, thus expanding their range of applications.
Implementation Method 1
The particulate adsorption material (A) and the fiber material (B) are each fixed on a binder carrier based on a thermoplastic organic polymer
Implementation Method 2
the use of adsorber particles to remove poisonous or harmful substances and odors from gas or air flows
Implementation Method 3
which have both adsorber particles and fiber materials... with combined adsorption properties on the one hand and particle or aerosol filter properties on the other
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
The invention relates to adsorptive structures on the basis of agglomerates of adsorber particles, preferably having a particle and/or aerosol filter function, wherein each of the individual adsorptive structures, in particular the individual agglomerates, has at least one particulate adsorption material and at least one fibre material, wherein the at least one particulate adsorption material and the at least one fibre material are each fixed on a binding agent carrier.