Transverse Current Activated Carbon Fiber Adsorbent
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Solution Overview
Problem
Existing adsorber modules with activated carbon fibers suffer from non-uniform heating, pressure distribution, and mechanical instability, leading to incomplete desorption and safety concerns due to electrostatic discharges, resulting in inefficiency and high costs.
Innovation Solution
The solution involves applying an electric current transversely to the activated carbon fiber layer, aligning it with the gas flow direction to ensure uniform heating and pressure distribution, using a layered structure with insulated inner and outer conductive layers to form a current circuit, and employing a radial gas flow to enhance mechanical stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electric current is applied longitudinally to activated carbon fiber elements for heating, then the adsorbent can be regenerated, but non-uniform heating occurs along the axial length resulting in incomplete desorption
Solution Approach 1:
The patent changes the direction of electric current application from longitudinal (axial) to transverse (radial) relative to the fiber axis. This dimensional change in current direction enables uniform heat distribution across the adsorbent cross-section, eliminating the non-uniform heating that occurred with longitudinal current application and thereby achieving complete desorption.
Solution Approach 2:
The patent inverts the conventional approach by applying electric current perpendicular to the fiber axis rather than parallel to it. This inversion of the current direction fundamentally changes the heating pattern from non-uniform (hot spots at ends) to uniform (even distribution), resolving the contradiction between heating capability and desorption completeness.
2Quantity of substance
If activated carbon fibers are used in mats or hollow fibers for adsorption, then adsorption capacity is improved, but mechanical stability decreases and electrostatic discharge risks increase
Solution Approach 1:
The patent employs composite structures combining activated carbon fibers with electrically conductive materials in a layered configuration. This composite approach maintains the high adsorption capacity of activated carbon while the conductive layers provide mechanical reinforcement and electrostatic discharge protection, thereby improving reliability without sacrificing adsorption performance.
Solution Approach 2:
The patent introduces electrically conductive layers at specific locations (inner and outer surfaces) of the activated carbon fiber mat. This localized application of conductive material provides mechanical stability and electrostatic protection precisely where needed, while preserving the adsorption properties of the bulk activated carbon fibers.
3Productivity
If electric current is applied to heated activated carbon fiber elements, then desorption is achieved, but safety concerns arise due to electrostatic discharges
Solution Approach 1:
The patent introduces electrically conductive layers as intermediary elements between the activated carbon fibers and the external environment. These conductive layers serve as safety intermediaries that provide controlled electrical pathways, preventing uncontrolled electrostatic discharges while allowing the necessary current flow for heating and desorption to occur efficiently.
Solution Approach 2:
The patent incorporates electrically conductive layers in advance within the structure of the activated carbon fiber mat. This beforehand cushioning provides built-in electrostatic protection prior to operation, preventing harmful discharges during the heating and desorption process while maintaining regeneration efficiency.
4Productivity
If non-uniform pressure distribution occurs during gas flow through activated carbon fibers, then flow efficiency is reduced, but achieving uniform pressure distribution requires complex结构设计
Solution Approach 1:
The patent changes the gas flow direction from axial (parallel to fiber axis) to radial (perpendicular to fiber axis). This dimensional change in flow direction, combined with transverse current application, creates uniform pressure distribution across the adsorbent bed, improving gas flow efficiency without requiring complex structural modifications.
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 approach achieves uniform heating and desorption, improves mechanical stability, and enhances safety and cost-effectiveness by ensuring complete pollutant removal and efficient gas treatment.
Implementation Method 1
at least one adsorption module for adsorbing the pollutants, which is utilized in an adsorption apparatus and contains at least one electrically conductive layer of an activated carbon fiber mat
Implementation Method 2
comprising an electric current circuit for heating the activated carbon fiber mat for the desorption of the adsorbed pollutants
Implementation Method 3
comprising a distributing pipe, which is routed into the center of the adsorption module and has outlet openings, for a flush gas for inertizing and rinsing the activated carbon fiber mat
Data Source
AI summary
A device for treating a gas laden with pollutants, includes at least one adsorption module for adsorbing the pollutants, which is utilized in an adsorption apparatus. The adsorption module includes at least one electrically conductive layer of an activated carbon fiber mat, an electric current circuit for heating the activated carbon fiber mat for the desorption of the adsorbed pollutants, and distributing conduit which is routed into the center of the adsorption module and has outlet openings for a flush gas for inertizing and rinsing the activated carbon fiber mat.