Catalyst Structure With Stacked Plates For Gas Flow Disturbance
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Solution Overview
Problem
Conventional catalyst structures face challenges in maintaining low pressure loss while efficiently stirring gas flow, often requiring numerous and high weir-like protrusions, which increase pressure loss, and alternative methods like stacking gas dispersions require complex installations.
Innovation Solution
A catalyst structure with flat-plate parts supporting catalytic constituents and a stirring part made of inorganic fiber, which contacts adjacent elements at a preset angle, facilitating gas flow and reducing pressure loss through a simple construction by folding lead parts to enhance catalytic activity and productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If weir-like protrusions are provided to disturb gas flow and improve activity, then catalytic activity is improved, but pressure loss increases
Solution Approach 1:
The catalyst element is divided into multiple flat-plate parts stacked in sequence, with gas flow passages formed between adjacent plates. This segmentation allows gas flow disturbance to be distributed across multiple interfaces rather than requiring single high protrusions, reducing localized pressure loss while maintaining overall catalytic activity.
Solution Approach 2:
Instead of creating turbulence within a single flat catalyst plane using protrusions, the invention transitions to a three-dimensional stacked structure where multiple flat plates create alternating flow paths. The gas flow is disturbed by passing through multiple narrow passages between stacked plates, achieving turbulence in the vertical dimension rather than horizontally.
2Reliability
If gas dispersions are stacked alternately with plate-like catalyst to disturb gas flow, then gas flow disturbance is achieved, but device complexity increases
Solution Approach 1:
The stirring function is merged with the catalyst structure itself. The flat-plate parts that serve as catalyst carriers also create the flow disturbance when stacked, eliminating the need for separate gas dispersion elements. The catalyst plates themselves become the flow-disturbing structure through their stacked arrangement.
Solution Approach 2:
The flat-plate catalyst parts serve multiple functions simultaneously: they provide catalytic activity on their surfaces, create gas flow passages when stacked, and generate flow disturbance through their alternating arrangement. This multi-functionality eliminates the need for separate dedicated stirring components.
3Reliability
If numerous and high weir-like protrusions are provided to obtain sufficient turbulence effect, then gas flow turbulence is improved, but pressure loss increases
Solution Approach 1:
The turbulence generation is segmented across multiple catalyst plate interfaces rather than concentrated in single high protrusions. Each interface between stacked plates creates localized flow disturbance, and the cumulative effect of multiple segments achieves sufficient overall turbulence with lower individual pressure losses.
Solution Approach 2:
Instead of using excessive height of single protrusions to achieve turbulence, the invention uses multiple partial disturbance zones created by stacked plates. The cumulative turbulence effect from numerous smaller disturbance interfaces achieves the required mixing without the excessive pressure loss of single large protrusions.
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 catalyst structure effectively prevents pressure loss increase while efficiently stirring gas flow, improving denitrification rates and reducing operational costs and environmental impact by simplifying the manufacturing process and enhancing reaction efficiency.
Implementation Method 1
a stirring part which is provided in such a manner as to come into contact with the first flat-plate part and the second flat-plate part... efficiently stirred by a structure making contact between adjacent catalyst elements
Implementation Method 2
a first flat-plate part and a second flat-plate part which support, on surfaces thereof, a constituent having catalytic activity to an exhaust gas
Data Source
AI summary
Provided is a catalyst structure which prevents an increase in pressure loss by a simple construction while the gas flow is efficiently stirred by a structure making contact between adjacent catalyst elements. The catalyst structure is provided with a first flat-plate part and a second flat-plate part which support, on surfaces thereof, a constituent having catalytic activity to an exhaust gas and face each other, and a stirring part which is provided in such a manner as to come into contact first with the first flat-plate part and the second flat-plate part in an extending manner from the first flat-plate part to the second flat-plate part at a prescribed angle with respect to the direction in which the exhaust gas flows.