Offset Support Plates for Reactor Vessel Tubes and Fluid Flow
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Solution Overview
Problem
Existing methanol synthesis reactors face issues with pressure drop due to long reactor tubes, requiring additional support plates that hinder fluid exchange and cause tubes to bend, bow, or sway during transport and operation.
Innovation Solution
A reactor vessel design with offset first and second support plates that transversely support tube groups, allowing for fluid exchange through dedicated apertures, minimizing interference with fluid flow and enabling axial movement of tubes to accommodate thermal expansion while preventing bending and swaying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If additional support plates are inserted to prevent tubes from sagging during transport and bowing/bending/swaying during operation, then tube stability is improved, but pressure drop on the coolant side increases and fluid exchange is hindered
Solution Approach 1:
The support function is segmented by dividing the tube bundle into multiple groups (first tube groups and second tube groups) that are supported at different locations by the first and second support plates. This segmentation allows tubes to be supported at multiple points without requiring additional support plates throughout the entire length, thereby reducing pressure drop while maintaining stability.
Solution Approach 2:
The support plates are positioned at specific locations along the longitudinal axis rather than uniformly distributed. The first support plate supports first tube groups at one location, while the second support plate supports second tube groups at another location. This localized support approach provides necessary stability while minimizing the total number of support plates and their hindering effect on fluid flow.
2Adaptability or versatility
If the reactor is made long and slender to meet external dimension restrictions for transport, then transportability is improved, but pressure drop on the coolant side increases and tube stability becomes more difficult to maintain
Solution Approach 1:
The tube bundle is segmented into multiple tube groups that are distributed along the longitudinal axis. By supporting these segmented groups at different locations using the first and second support plates, the long slender reactor can maintain tube stability without requiring additional support plates throughout the entire length, thus reducing pressure drop while preserving transportability.
Solution Approach 2:
The support structure utilizes the longitudinal dimension by positioning support plates at different axial locations rather than relying solely on radial support. This dimensional arrangement allows the reactor to maintain its long slender shape for transportability while providing adequate tube support through strategic placement of support plates along the length, reducing overall pressure drop.
3Stability of the object's composition
If support plates are positioned to maximize tube support, then tube stability is improved, but fluid exchange efficiency decreases due to increased hindering effect
Solution Approach 1:
The support plates are positioned at specific local locations along the longitudinal axis to support particular tube groups. The first support plate is positioned to support first tube groups, while the second support plate is positioned to support second tube groups. This localized positioning provides maximum tube support where needed while minimizing the total number of support plates and their hindering effect on fluid exchange efficiency.
Solution Approach 2:
The tube bundle is divided into multiple tube groups that are supported at different locations. By segmenting the support function across multiple plates positioned at different axial locations, the design achieves comprehensive tube support while reducing the cumulative hindering effect on fluid flow compared to a single comprehensive support plate or multiple closely spaced plates.
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 design reduces pressure drop and minimizes the hindering effect of support plates, ensuring stable tube support and efficient fluid exchange, even during thermal expansion and varying flow states.
Implementation Method 1
The first support plate supports the tubes of the first tube groups in the tube openings of the first support plate transversely to the longitudinal direction of the tubes and the second support plate supports the tubes of the second tube groups in the tube openings of the second support plate transversely to the longitudinal direction of the tubes
Implementation Method 2
the first support plate has multiple fluid-exchange apertures. Each of the second tube groups is routed through a respective one of the apertures in the first support plate. Each of the first tube groups is routed through a respective one of the apertures in the second support plate
Implementation Method 3
A copper-based solid-bed catalyst is used to convert the synthesis gas to methanol
Implementation Method 4
The cooling in the water-cooled reactor is performed via heat being released into the water, whereupon steam can be produced
Implementation Method 5
The cooling in the water-cooled reactor is performed via heat being released into the water
Implementation Method 6
The steam-water mixture rises on the tubes
Data Source
AI summary
A device (1.1; 1.2) with a reactor vessel (2), a tube bundle (3) of multiple tubes (4), a first support plate (5) and a second support plate (6), wherein the tube bundle (3) is located in the reactor vessel (2), wherein the tube bundle (3) comprises multiple first tube groups (7) and multiple second tube groups (8), wherein the first support plate (5) and the second support plate (6) are disposed in the reactor vessel (2) transversely to a longitudinal axis (9) of the reactor vessel (2), wherein the first support plate (5) is offset from the second support plate (6) along the longitudinal axis (9) of the reactor vessel (2).