Adsorbent Bed Composite Structure for Gas Separation
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Solution Overview
Problem
Conventional adsorbent beds, typically in bead or pellet form, face limitations such as low bed packing, high pressure drop, and attrition issues, which restrict their capacity for gas separation and purification, leading to increased energy costs and complexity in operation.
Innovation Solution
The development of an adsorbent bed with a composite structure formed through diffusion-induced phase inversion, where adsorbent particles are embedded in a polymeric matrix, allowing for higher bed packing and reduced pressure drop, achieved by forming elementary composite structures that are compressed to create a product bed with a packing density greater than 60%.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional bead or pellet adsorbents are used, then ease of loading and unloading is improved, but bed packing is limited to approximately 60%
Solution Approach 1:
The adsorbent is divided into multiple layers with different particle sizes, where larger particles form the base layer and smaller particles fill the interstices, achieving high packing density while maintaining operational ease
Solution Approach 2:
The adsorbent bed is designed with controlled porosity and void space distribution across different layers, optimizing both packing density and gas flow characteristics
2Stability of the object's composition
If conventional bead or pellet adsorbents are used, then structural stability is improved, but pressure drop across the bed increases
Solution Approach 1:
The bed is segmented into layers with progressively smaller particle sizes, creating a gradient structure that reduces flow resistance while maintaining structural integrity through the layered arrangement
Solution Approach 2:
Particle size parameters are varied across different layers of the adsorbent bed, with larger particles at the bottom and smaller particles at the top, optimizing pressure drop characteristics while preserving structural stability
3Strength
If conventional bead or pellet adsorbents are used, then mechanical strength is improved, but attrition velocity is low which limits flow rate handling
Solution Approach 1:
The adsorbent bed structure is designed to be dynamically adaptive to flow conditions, with the layered particle size distribution allowing the bed to handle varying flow rates without excessive attrition by optimizing flow distribution across layers
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 enhances the capacity and efficiency of gas separation by increasing bed packing density, reducing pressure drop, and mitigating attrition, thereby improving energy balance and operational simplicity while maintaining high adsorbent density.
Implementation Method 1
Adsorbent-based gas separation or purification
Implementation Method 2
at least one elementary composite polymer/adsorbent structure is formed through diffusion induced phase inversion
Data Source
AI summary
An adsorbent bed, including at least one elementary composite structure that includes adsorbent particles in a polymer matrix, wherein the adsorbent bed has a bed packing, ρbed, defined as a volume occupied by the at least one elementary composite structure Vecs divided by a volume of the adsorbent bed Vbed where ρbed is greater than 0.60.