Bed Vessel Treating Elements for Flow Distribution
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Solution Overview
Problem
Bed vessels in the process industry face challenges with inadequate stream flow distribution, leading to channeling and under/over-exposure of processing internals, resulting in reduced productivity and safety risks due to the need for costly and complex conventional flow redistribution devices.
Innovation Solution
The implementation of redistribution treating zones with treating elements, such as ceramic reticulates, within bed vessels to facilitate the dispersal of streams across processing zones, improving contact with solid processing material elements and reducing channeling by creating a combo-zone with commingled processing and treating materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional structured engineering devices are installed to facilitate flow redistribution, then stream flow distribution is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent uses expendable beds of solid processing material elements (such as ceramic balls or rings) that can be easily loaded and unloaded from the vessel. These inexpensive, replaceable elements provide flow redistribution functionality without requiring complex permanent structures, allowing simple replacement rather than complex maintenance of sophisticated devices.
Solution Approach 2:
The patent employs beds of solid processing material elements with porous or permeable characteristics that allow fluid streams to pass through while distributing flow. These porous material beds create tortuous flow paths and redistribute streams without requiring complex engineered structures, achieving flow distribution through the inherent properties of the packing materials.
2Ease of operation
If conventional structured engineering devices are installed to facilitate flow redistribution, then stream flow distribution is improved, but manufacturing and installation cost increase
Solution Approach 1:
The patent uses expendable beds of solid processing material elements (such as ceramic balls or rings) that can be easily loaded and unloaded from the vessel. These inexpensive, replaceable elements provide flow redistribution functionality without requiring complex permanent structures, allowing simple replacement rather than complex maintenance of sophisticated devices.
Solution Approach 2:
The solid processing material elements in the redistribution bed perform dual functions: they redistribute flow streams and also serve as the primary processing media for the chemical or physical operation. This self-service approach eliminates the need for separate redistribution devices, reducing manufacturing and installation costs while maintaining flow distribution effectiveness.
3Ease of operation
If conventional structured engineering devices are installed to facilitate flow redistribution, then stream flow distribution is improved, but space consumption increases
Solution Approach 1:
The patent merges the flow redistribution function with the primary processing function by using the same bed of solid processing material elements for both purposes. The redistribution bed is integrated into the vessel and performs dual functions: redistributing incoming streams and providing the processing function (catalysis, absorption, etc.), thereby eliminating the need for separate redistribution devices and maximizing space utilization.
Solution Approach 2:
The solid processing material elements serve multiple functions simultaneously: they act as flow distributors, provide structural support, and perform the primary chemical or physical processing function. This multi-functionality reduces the overall space required in the vessel compared to having dedicated separate devices for each function.
4Ease of operation
If conventional structured engineering devices are installed to facilitate flow redistribution, then stream flow distribution is improved, but safety risks increase due to containment requirements
Solution Approach 1:
The patent uses expendable beds of solid processing material elements (such as ceramic balls or rings) that can be easily loaded and unloaded from the vessel. These inexpensive, replaceable elements provide flow redistribution functionality without requiring complex permanent structures, allowing simple replacement rather than complex maintenance of sophisticated devices.
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 enhances bed vessel performance and profitability by improving stream distribution and interaction with processing materials, reducing the need for costly devices and minimizing space consumption, while avoiding safety risks associated with conventional containment systems.
Implementation Method 1
Three dimensional reticulates are known to promote flow distribution. For example, U.S. Patent Nos. 6,258,900, 6,291,603 and 7,265, 189 each describe such reticulated materials.
Implementation Method 2
The purpose of such distribution is to subdivide the streams into rivulets which improve stream contact with bed vessel processing materials.
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.