Honeycomb Reactor Protrusions for Higher Gas Capture Recovery
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Solution Overview
Problem
Existing reactors fail to effectively increase the amount of capturing target gas recovered due to insufficient gas flow disturbance and inadequate contact between the gas and the adsorbent supported on the partition walls of honeycomb structures.
Innovation Solution
The reactor design includes a plurality of honeycomb structures with aligned end faces and protrusions on the partition walls to enhance gas flow turbulence, ensuring better contact with the functional material, thereby increasing the recovery of capturing target gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If adsorbent is simply supported on the surfaces of partition walls of honeycomb structure, then device complexity is reduced, but contact efficiency between gas and adsorbent deteriorates
Solution Approach 1:
The honeycomb structure is divided into multiple cells with partition walls, and protrusions are added to specific partition walls to create segmented flow paths. This segmentation disturbs the gas flow and improves contact between gas and adsorbent without significantly increasing overall structural complexity.
Solution Approach 2:
Protrusions are selectively provided on specific partition walls (e.g., alternating sides or specific cell walls) rather than uniformly across all partition walls. This local modification creates turbulence where needed while maintaining simplicity in other areas, resolving the contradiction between complexity and productivity.
2Loss of energy
If gas flow is kept smooth through honeycomb structure, then pressure loss is reduced, but contact efficiency with adsorbent deteriorates
Solution Approach 1:
Protrusions on partition walls create mechanical disturbance and turbulence in the gas flow path. This turbulence enhances mixing and contact between gas and adsorbent surfaces, improving recovery efficiency while the overall honeycomb structure maintains relatively low pressure loss.
Solution Approach 2:
The flow regime is transformed from smooth laminar flow to turbulent flow through the protrusions. This dynamic change in flow characteristics improves mass transfer and contact efficiency while the honeycomb geometry controls the overall pressure drop.
3Productivity
If protrusions are added to all partition walls, then contact efficiency is improved, but device complexity increases
Solution Approach 1:
Protrusions are selectively placed on specific partition walls (e.g., alternating sides or specific cells) rather than uniformly on all partition walls. This local quality approach improves contact efficiency through turbulence while reducing manufacturing complexity compared to uniform protrusion placement.
Solution Approach 2:
Instead of adding protrusions to all partition walls (excessive action), protrusions are added to a subset of partition walls (partial action). This partial application achieves sufficient turbulence and contact efficiency while significantly reducing manufacturing complexity.
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 enhanced gas flow turbulence improves the contact efficiency of the process gas with the functional material, leading to increased recovery of capturing target gases such as CO2, NOx, SOx, and H2S from exhaust gases and the atmosphere.
Implementation Method 1
The proposed main method for recovering CO2 is to adsorb CO2 onto an adsorbent capable of adsorbing CO2
Implementation Method 2
the partition walls comprise at least one protrusion protruding into the cells... the enhanced gas flow turbulence improves the contact efficiency
Data Source
AI summary
A reactor including a plurality of honeycomb structures each having an outer peripheral wall and partition walls provided on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells through which a process gas containing a capturing target gas can flow, each of the cells extending from an inflow end face to an outflow end face of each honeycomb structure. The honeycomb structures are provided so that the outflow end faces and the inflow end faces of adjacent honeycomb structures face each other and central axes of the cells of the adjacent honeycomb structures are aligned with each other. The partition walls have at least one protrusion protruding into the cells and extending from the inflow end face to the outflow end face. The protrusions on the partition walls of the adjacent honeycomb structures are provided at different positions.