Honeycomb Body Radial Flow Diversion for Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for treating exhaust gases from internal combustion engines and exothermic chemical processes, such as Fischer-Tropsch synthesis and methanation, face high installation costs and limited throughput due to the use of pellet catalysts, which restrict heat dissipation and fluid flow efficiency.
Innovation Solution
A method utilizing a honeycomb body with a structured metallic layer that diverts fluid flow radially outward, increasing flow speed near the wall and enhancing heat dissipation, while maintaining a catalytically active surface area for effective thermal management and chemical reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If pellet catalysts are used for exothermic reactions, then heat dissipation is achieved to some extent, but installation costs are high and throughput is limited due to small pipe diameters required
Solution Approach 1:
The catalyst is segmented into two distinct zones: an outer zone with pellet catalysts for heat dissipation and a central zone with structured catalyst support for high throughput. This segmentation allows each zone to perform its specific function optimally without compromising the other
Solution Approach 2:
Different regions of the catalytic converter are assigned different qualities: the outer zone uses pellet catalysts optimized for heat dissipation, while the central zone uses structured catalyst support optimized for flow throughput. Each region has tailored properties to fulfill its local function
2Temperature
If pellet catalysts are used to dissipate heat, then thermal management is achieved, but pipe diameters must be small which limits throughput
Solution Approach 1:
The invention transitions from a single-dimensional flow path to a two-dimensional cross-sectional arrangement by placing pellet catalysts in the outer annular region and structured support in the central region, allowing simultaneous heat dissipation and high throughput through spatial dimensionality
3Temperature
If small pipe diameters are used for adequate heat dissipation with pellet catalysts, then thermal management is improved, but installation costs increase and throughput is limited
Solution Approach 1:
The invention merges the advantages of pellet catalysts (heat dissipation) and structured catalyst support (low pressure drop, high throughput) into a single hybrid system, eliminating the need to choose between them and reducing overall system complexity and installation costs
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 reduces costs, increases throughput, and effectively manages thermal conditions by diverting fluid flow to enhance heat dissipation and catalytic conversion efficiency in processes like Fischer-Tropsch synthesis and methanation.
Implementation Method 1
At the fluid inlet side, the average first inflow speed of the fluid flow in the outer zone close to the boundary is lower than the average second inflow speed of the fluid flow in the central zone. The method also includes c) at least partially diverting the fluid flow in an outward radial direction, such that, at the fluid outlet side, the average first outflow speed of the fluid flow in at least one subregion of the outer zone close to the boundary is at least 20%, in some examples, at least 40%, higher than the average second outflow speed of the fluid flow in the central zone.
Implementation Method 2
The diversion of the fluid flow also has the effect that the heat of the fluid flow may be extracted largely via the wall of the fluid line.
Implementation Method 3
The use of pellet catalysts have been used in these processes. The method may also be used for chemical processes in the context of a Fischer-Tropsch synthesis (carbon monoxide reacts with hydrogen to form hydrocarbon compounds), in methanation (carbon dioxide or carbon monoxide reacts with hydrogen to form methane), and in the context of a Sabatier process (carbon dioxide and hydrogen react to form methane). The method may also be suitable for any exothermic, heterogeneously catalyzed gas phase reaction
Implementation Method 4
any exothermic, heterogeneously catalyzed gas phase reaction (that is to say for any exothermic conversion of gases on, for example, solid or liquid catalysts)
Data Source
AI summary
A method for influencing a fluid flow in a fluid line is provided. The fluid line has a wall and a honeycomb body arranged in the fluid line with a fluid inlet side and a fluid outlet side. The honeycomb body has a honeycomb structure with a cross section area and with ducts through which the fluid flow can flow from the fluid inlet side to the fluid outlet side. The honeycomb body has an outer boundary. The honeycomb structure has a circumferential outer zone close to the boundary and a central zone arranged within the outer zone. The outer zone includes at most 70% of the cross section area. The method includes providing the fluid flow upstream of the honeycomb body, entry of the fluid flow into the honeycomb body, and at least partial redirection of the fluid flow outwards in a radial direction.