Pillar-Structured Chemical Reactors With Edge Dummy Channels
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Solution Overview
Problem
Chromatographic columns with multiple parallel channels exhibit lower separation efficiency in outer channels compared to centrally located channels due to differences in pillar structures, leading to non-uniformity and inefficiency.
Innovation Solution
Incorporating structured areas, such as dummy channels or surfaces, adjacent to the edges of effective channels to compensate for non-uniform electrical current density during production, ensuring uniformity and efficiency across all channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple parallel channels are used to increase column length and separation power, then separation power is improved, but separation efficiency in outer channels deteriorates compared to central channels
Solution Approach 1:
The patent introduces dummy channels at specific locations (outer edges) where pillar structures are modified or omitted, creating local variations in channel geometry. This allows different regions of the column to have different properties: central channels maintain full pillar structures for high separation power, while outer channels have modified structures to compensate for edge effects and achieve uniform separation efficiency across all channels.
Solution Approach 2:
The patent deliberately creates asymmetric channel configurations by introducing dummy channels at outer positions while maintaining symmetric pillar structures in central channels. This asymmetric design compensates for the inherent asymmetry in fluid flow patterns at channel edges, ensuring uniform separation performance across all channels despite the non-uniform geometry.
2Ease of manufacture
If pillar structures are uniformly produced in all channels, then manufacturing simplicity is maintained, but separation efficiency becomes non-uniform across channels
Solution Approach 1:
The patent applies different pillar structure configurations to different channel locations. Outer channels have dummy channels with modified or absent pillar structures, while central channels maintain full pillar structures. This local differentiation achieves uniform separation efficiency while maintaining relative manufacturing simplicity through standardized pillar fabrication processes.
Solution Approach 2:
The patent incorporates dummy channels and modified pillar structures during the initial manufacturing process, before the column is put into service. This preliminary structuring of edge effects ensures that when the column operates, all channels achieve uniform separation efficiency without requiring post-manufacturing adjustments or complex operational compensations.
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 method enhances the production of chemical reactors with pillar structures, achieving equivalent efficiency in all channels without limiting pillar designs, thereby improving separation power and uniformity.
Implementation Method 1
generating an electrical current density in the substrate and the structured area at least partially compensating for a non-uniformity in electrical current density during the production in effective channels positioned on the outside of the initial design
Data Source
AI summary
A method for producing a chemical reactor. The chemical reactor comprises one or more effective channels which comprise pillar structures, an input connected to one of the effective channels to allow fluid/gas into the effective channels and an output connected to one of the effective channels to remove at least one component of the liquid/gas. The method comprises obtaining an initial design of the reactor, further introducing into the initial design at least a structured area positioned adjacent to an effective channel of the one or more effective channels located at the edge of the initial design, the structured area not being fluidly connected to one of the effective channels, to obtain a further design and the production of the reactor according to the further design.