Bed Vessel Treating Zones Using Packed Elements Against Channeling
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Solution Overview
Problem
Bed vessels in the process industry face challenges with inadequate stream flow distribution leading to channeling, resulting in underutilization of processing internals and potential damage due to 'hot spots', which reduces productivity and profitability, and requires costly and risky conventional structured engineering devices for flow redistribution.
Innovation Solution
The implementation of redistribution treating zones with treating materials, such as form-fit fibrous meshes or randomly-packed treating elements, positioned between upstream and downstream processing zones to facilitate effective stream flow redistribution, allowing solid processing material elements to migrate and commingle with treating elements, forming a 'combo-zone' that enhances stream contact with processing materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional structured engineering devices are installed for flow redistribution, then stream flow distribution is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs simple, inexpensive treating elements such as randomly-packed spheres, rings, or other geometric shapes that can be easily manufactured and replaced. These elements form a permeable barrier that redistributes stream flow without requiring complex engineered structures, thereby reducing device complexity and cost while maintaining effective flow distribution.
Solution Approach 2:
The patent utilizes a permeable barrier composed of randomly packed treating elements with void spaces between them. This porous structure allows stream flow to pass through while redistributing it across the bed vessel cross-section, achieving flow distribution functionality without the need for complex structured engineering devices.
2Reliability
If conventional structured engineering devices are installed for flow redistribution, then stream flow distribution is improved, but space consumption increases
Solution Approach 1:
The permeable barrier formed by randomly packed treating elements occupies minimal space within the bed vessel. The void spaces between the packing elements allow efficient stream flow redistribution without requiring large volumes, thereby maximizing the space available for processing materials while maintaining effective flow distribution.
Solution Approach 2:
The patent places the permeable barrier at specific locations within the bed vessel where flow redistribution is most needed, such as between processing zones or at points where channeling is likely to occur. This localized approach achieves effective flow distribution without occupying excessive space throughout the entire vessel.
3Productivity
If stream flow channeling occurs, then processing productivity decreases, but hot spots and damage risks increase
Solution Approach 1:
The permeable barrier acts as an intermediary element between upstream and downstream processing zones. It intercepts channeling streams and redistributes them into a more uniform flow pattern, preventing both productivity loss from underutilized processing materials and the formation of hot spots that could cause damage to the vessel or internals.
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 solution improves bed vessel performance by increasing stream contact with processing materials, reducing the need for costly conventional devices, minimizing space consumption, and enhancing profitability while avoiding safety risks associated with containment facilities.
Implementation Method 1
solid processing material elements to migrate and commingle with treating elements
Data Source
AI summary
A method for facilitating the distribution of the flow of one or more streams within a bed vessel is provided. Disposed within the bed vessel are internal materials and structures including multiple operating zones. One type of operating zone can be a processing zone composed of one or more beds of solid processing material. Another type of operating zone can be a treating zone. Treating zones can facilitate the distribution of the one or more streams fed to processing zones. The distribution can facilitate contact between the feed streams and the processing materials contained in the processing zones.