Monolith with Attached Catalytic Beads for Low Pressure Drop
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Packed bed catalyst designs face issues with pressure drop and bead degradation due to fluid flow, which can lead to clogging and reduced effectiveness in catalytic and sorbent applications, especially with smaller beads required for efficient reactions.
Innovation Solution
A monolith structure comprising a substrate sheet with catalytic or sorbent beads attached, forming channels that allow fluid flow while minimizing bead-to-bead contact through the use of a separator sheet, reducing pressure drop and enhancing operational stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If small beads are used in packed bed to maintain reaction efficiency, then catalytic activity is improved, but pressure drop increases and bead degradation worsens
Solution Approach 1:
The invention divides the traditional packed bed into a structured monolith configuration where beads are arranged in ordered rows and columns on a support. This segmentation reduces random bead-to-bead contact and creates defined flow channels, lowering pressure drop while maintaining small bead size for catalytic activity.
Solution Approach 2:
The invention changes the structural parameters of the bed from random packing to ordered monolith arrangement. This parameter change reduces the tortuosity of flow paths and minimizes bead contact points, thereby reducing pressure drop while preserving the small bead size necessary for high catalytic activity.
2Productivity
If small beads are used in packed bed to maintain reaction efficiency, then catalytic activity is improved, but bead degradation increases
Solution Approach 1:
The monolith structure segments the beads into fixed positions on a support, reducing random movement and mechanical stress between beads. This segmentation protects small beads from degradation while maintaining their catalytic effectiveness.
Solution Approach 2:
The support structure acts as an intermediary that holds the small catalytic beads in place, reducing direct bead-to-bead contact and mechanical stress. This intermediary support protects the beads from degradation while allowing them to maintain high catalytic activity.
3Ease of manufacture
If random packed bed structure is used, then ease of manufacture is improved, but bead compaction and clogging worsen
Solution Approach 1:
The beads are preliminarily arranged in ordered rows and columns on the support before final assembly, preventing random packing and subsequent compaction. This preliminary ordering maintains stable bead positions and prevents clogging while keeping the manufacturing process relatively simple.
4Loss of energy
If large beads are used to reduce pressure drop, then pressure drop is reduced, but surface area and heat transfer decrease
Solution Approach 1:
The invention transitions from a three-dimensional random packed bed to a two-dimensional ordered monolith structure with defined flow channels. This dimensional change allows small beads to be arranged in an ordered fashion that reduces pressure drop while maintaining high surface area exposure to the fluid flow.
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 monolith design achieves lower pressure drop and maintains reaction efficiency with reduced bead degradation, enabling effective catalytic and sorbent operations while being simpler and less expensive to implement compared to traditional methods.
Implementation Method 1
Each bead has catalytic or sorbent material on an exposed surface of the bead
Implementation Method 2
Such packed beds will absorb or adsorb a particular species of gas or liquid from a mixture that is passed through the bed
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A monolith for catalytic or sorbent purposes. The monolith includes a substrate sheet having attached thereto a plurality of catalytic or sorbent beads. Each bead has a diameter of at least fifty microns. The substrate sheet at least partially defines one or more channels through the monolith. Fluid flowing through the channels will contact the beads for catalytic or sorbent purposes.