Swirl Nozzle Fluidized Bed for Solid Removal
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Solution Overview
Problem
Existing methods for removing fine to coarse-grained solids from storage tanks require high energy and complex mechanical components, leading to inefficiencies and susceptibility to faults, especially under high pressures.
Innovation Solution
Introducing a gas stream through swirl nozzles in the dosing chamber floor to create a rotating fluidized bed, combined with a separate gas stream for fluidization, achieving optimal and homogeneous fluidization without additional mechanical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fluidization is performed in the entire volume of the container, then homogeneous fluidization is achieved, but energy consumption and gas requirement increase significantly
Solution Approach 1:
The patent divides the fluidization process into two distinct zones: a fluidized bed in the lower area for homogeneous mixing and a suction zone in the upper area for removal. This segmentation allows fluidization to occur only where needed, reducing overall energy consumption while maintaining homogeneous fluidization in the active zone through dedicated gas supply elements positioned at the funnel edge.
2Stability of the object's composition
If mechanical components such as stirrers are added to support fluidization, then fluidization homogeneity improves, but device complexity and susceptibility to faults increase
Solution Approach 1:
The patent replaces mechanical stirrers with a pneumatic system using gas supply elements positioned at the funnel edge. Gas is introduced to create a fluidized bed that achieves homogeneous mixing through fluid dynamics rather than mechanical agitation. This substitution eliminates moving parts, reducing device complexity and susceptibility to faults while maintaining fluidization homogeneity.
3Stability of the object's composition
If high pressure is applied to achieve fluidization of difficult-to-fluidize solids, then fluidization is achieved, but seal requirements and system reliability are compromised
Solution Approach 1:
The patent applies gas supply elements specifically at the funnel edge where solids are most difficult to fluidize, creating a localized fluidized bed. This local application of fluidization energy achieves effective solids handling without requiring high pressure throughout the entire system, thereby reducing seal requirements and improving system reliability.
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 approach enables efficient and homogeneous removal of solids with reduced energy requirements and improved system availability, suitable for pressurized storage tanks handling fine-grained fuels.
Implementation Method 1
fluidization in the lower area of such a receiving or dosing container
Implementation Method 2
a gas is additionally introduced in the area of the dosing chamber floor to form a fluidized bed loosening the solid
Implementation Method 3
a gas via swirl nozzles to set the fluidized bed in rotation
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a method and a device for the metered removal of a fine to coarse-grained solid matter or a solid matter mixture from a storage container, comprising a device for forming a fluidized bed in the discharge region or in a metering chamber of the metering container, wherein fluidization that is as optimal as possible is to be created in the lower region of such a receiving or metering container while avoiding any additional systems, mechanical elements, or extensive installations. This is achieved according to the method in that a gas is additionally introduced in the region of the metering chamber bottom for forming a fluidized bed that loosens the solid matter, and a gas is introduced via swirl nozzles for bringing about the rotation of the fluidized bed.