Fluid Distribution Device for Catalytic Reactor Clogging
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Solution Overview
Problem
Existing fluid distribution devices in catalytic reactors are cumbersome to assemble and disassemble, require extensive support systems, and are prone to clogging, leading to premature shutdowns and significant production losses due to fouling in the catalytic bed, especially in reactors with downward flow where the upper layer becomes clogged.
Innovation Solution
A fluid distribution device with multiple conduits that receive distinct parts of the fluid directly from the source, minimizing intermediate connections and using local pressure loss mechanisms integrated with collection and distribution means, allowing for easy installation and reduced clogging risks, enabling efficient distribution and bypassing of clogged layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If multiple independent vertical cylinders with restriction orifices and grids are installed in the fixed bed to distribute fluid and bypass clogged layers, then the reactor can operate longer before pressure limit is reached, but the assembly and disassembly becomes time-consuming and complex requiring temporary supports and multiple positioning operations
Solution Approach 1:
The patent combines multiple functional elements (conduits, distribution means, pressure drop generation) into a single integrated device that can be easily assembled and disassembled without temporary supports, resolving the contradiction between operational duration and assembly complexity
Solution Approach 2:
The device is segmented into modular components (conduits, collection means, distribution means) that can be independently assembled and disassembled, reducing the time and complexity of installation while maintaining the ability to bypass clogged layers
2Ease of operation
If temporary supports are used to hold devices during filling of catalytic bed, then device positioning is enabled, but the dismantling operation becomes longer and supports may be difficult to remove from clogged layer
Solution Approach 1:
The patent eliminates the temporary supports from the system entirely, integrating the positioning function into the device structure itself, which allows for rapid assembly and disassembly without the time loss associated with support removal
Solution Approach 2:
The device is designed to be self-positioning within the reactor bed without requiring external temporary supports, enabling operators to quickly assemble and disassemble the device while maintaining proper positioning throughout the catalytic bed filling process
3Loss of energy
If conventional distribution devices are used to distribute fluid among multiple devices, then pressure loss increase is limited, but the devices require upstream connection to common distribution means increasing assembly complexity
Solution Approach 1:
The patent divides the fluid distribution into separate conduits that receive fluid directly from the source without common upstream connections, reducing connection complexity while maintaining effective pressure distribution through the catalytic bed
Solution Approach 2:
Each conduit is equipped with its own local pressure drop generation means, creating localized pressure control at each distribution point rather than relying on a common upstream distribution system, which simplifies connections while maintaining pressure loss control
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 device allows for rapid assembly and disassembly, reduces production losses by prolonging reactor operation between maintenance cycles, and is resistant to clogging, ensuring uniform fluid distribution and minimizing the impact of blockages on pressure loss.
Implementation Method 1
means for generating a local pressure drop on said fluid such that: the device comprises means for collecting said fluid, ensuring the fluidic connection between the conveying means and the means for distributing said fluid
Data Source
Figure 1a~1b
Figure 2
Figure 3a~3b
AI summary
The invention relates to a fluid dispensing device (D) which can be arranged in a fixed catalytic bed (C1, C2) of a reactor (R), said device comprising: means for conveying the fluid, said means comprising a plurality of ducts, each directly receiving a separate portion of the fluid; means for dispensing the fluid; and means for generating a local head loss in the fluid, all such that: the device comprises means for collecting said fluid (2a), providing the fluid connection between the ducts of the conveying means and the fluid dispensing means, and the means for generating a local head loss are mounted on the conveying, dispensing or collecting means (2a).