Fluidized Bed Separator Feed Pipes for Unobstructed Lamella Flow
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Solution Overview
Problem
Conventional fluidized bed separators face challenges such as laborious lamella plate removal due to solids buildup, frequent downtime for cleaning, restricted flow area, turbulent flow, and inability to handle large throughputs, which affect separation efficiency and require significant machine downtime.
Innovation Solution
A fluidized bed separator design with external oversize protection apparatus, horizontal feed pipes, and breakaway plates that facilitate easy lamella plate replacement, allowing for continuous flushing and increased flow area, reducing turbulence, and enabling higher throughput processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fluidized bed separators are used with internal oversize protection apparatus and downwardly-facing slurry feed channels in the upper separation chamber, then the separator can perform size and density separation, but the upward flow of smaller/less dense particles through lamella channels is restricted, reducing separation efficiency and limiting throughput capacity
Solution Approach 1:
The invention extracts the oversize protection apparatus and slurry feed channels from the upper separation chamber and relocates them to the lower separation chamber. This removal eliminates the obstruction to upward particle flow through the lamella plates while maintaining oversize particle protection functionality in the new location, thereby resolving the contradiction between throughput capacity and upward flow efficiency
Solution Approach 2:
The invention changes the spatial dimension by moving the feed channels and oversize protection apparatus from the upper chamber to the lower chamber, effectively utilizing vertical space reconfiguration. This dimensional relocation allows upward particle flow to proceed unobstructed through the upper chamber while feed introduction and oversize protection functions are maintained in the lower chamber
2Ease of repair
If lamella plates are installed in conventional separators with internal feed channels and oversize protection apparatus, then separation can occur, but solids buildup in the channels supporting the lamella plates significantly increases resistance to removal and pull out forces, making plate removal laborious and time-consuming
Solution Approach 1:
The invention extracts the feed channels and oversize protection apparatus from the upper separation chamber where they caused solids buildup problems. By relocating these components to the lower chamber, the supporting channels for lamella plates in the upper chamber are freed from solids accumulation issues, enabling easy plate removal and maintenance
Solution Approach 2:
The invention implements a self-cleaning mechanism where fluidization fluid continuously flows through the lower chamber, automatically flushing solids from the feed channels and oversize protection apparatus. This self-service cleaning prevents solids buildup that would otherwise hinder lamella plate removal, making maintenance easier without requiring external intervention
3Productivity
If conventional separators operate with downwardly-facing slurry feed channels in the upper separation chamber, then feed can be introduced, but the total cross-sectional flow area through the upper separation chamber is reduced, limiting the amount of material that can pass upwards into launders
Solution Approach 1:
The invention removes the downwardly-facing slurry feed channels from the upper separation chamber, eliminating the volumetric space they occupied. This extraction increases the total cross-sectional flow area available for upward particle transport into launders, thereby increasing the material processing rate while maintaining feed introduction functionality in the lower chamber
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 enhances separation efficiency by allowing continuous operation with reduced downtime, increased flow area, and smoother laminar flow, enabling processing of large throughputs without the need for frequent shutdowns.
Implementation Method 1
a fluidizing section (7) having at least one fluidization fluid inlet (9) for introducing fluidization fluid into a fluidization fluid distribution chamber (25)... for establishing a fluidized bed within the main separation chamber (6)
Implementation Method 2
The one or more feed pipes (11) may be configured to introduce feed slurry into the feed section (4) in a generally horizontal direction which is generally transverse to a vertical axis of the fluidized bed separator (1)
Implementation Method 3
an upper separation chamber (19) having a plurality of inclined plates (17)... channels (18) defined between the inclined plates (17) and the cross plates (39)... for separating particles by size and/or density
Data Source
AI summary
A fluidized bed separator (1) includes a feed section (4) between an upper separation chamber (19) and a main separation chamber (6). The feed section (4) has one or more feed pipes (11) extending horizontally and transversely with respect to a body wall (10) of the fluidized bed separator (1). The one or more feed pipes (11) are positioned completely and entirely underneath the inclined plates (17). An external oversize protection apparatus (3) which is separate from and external to the body wall (10) may be operatively coupled to the one or more feed pipes (11). One or more lamella cartridges (49) may be provided within channels (18) of the upper separation chamber (19), and one or more breakaway plates (54, 55) may be inserted within channels (18) to prevent sanding and facilitate insertion and extraction of the lamella cartridges (49).