Rotating Rod Basket Cyclone Separator for Pressure Loss Reduction
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Solution Overview
Problem
Cyclone air separators face challenges in achieving high separation efficiency while minimizing pressure loss, as increasing separation power with higher flow speed also increases pressure loss, and existing designs struggle to accommodate a larger immersion pipe diameter without allowing the vortex to continue through it, leading to inefficient separation.
Innovation Solution
Integration of a rotating rod basket surrounded by a static circular conveying channel within the cyclone separator, where the rod basket enhances the vortex and allows for a larger diameter immersion pipe by directing it upright through the cone, and optimization of the cyclone geometry, including the height ratio of cylindrical and conical portions and the diameter ratio of the immersion pipe, to maximize separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the diameter of the immersion pipe is increased to reduce pressure loss, then the pressure loss decreases, but the vortex continues through the immersion pipe and granular material is discharged with the carrier gas
Solution Approach 1:
The rod basket pre-accelerates the carrier gas in a tangential direction before it enters the cyclone separator, creating a strong vortex in advance. This preliminary action allows the use of a larger immersion pipe diameter without compromising vortex strength, as the vortex is already established and intensified by the rod basket rotation.
Solution Approach 2:
The rod basket rotates dynamically to generate and maintain the vortex, allowing the system to adapt the vortex strength to match the immersion pipe dimensions. By controlling the rotation speed of the rod basket, the system can maintain effective separation even with a larger immersion pipe that would otherwise allow vortex continuation and material discharge.
2Productivity
If the flow speed is increased to improve separation power, then the separation power increases, but the pressure loss increases
Solution Approach 1:
The rod basket performs preliminary acceleration of the carrier gas in tangential direction, creating the vortex before the gas enters the cyclone separator. This pre-acceleration reduces the need for high flow speeds in the separator itself, maintaining separation power while reducing pressure loss requirements.
Solution Approach 2:
The system changes the parameter of vortex generation from relying solely on high flow speed through the separator to using rotational speed of the rod basket. This parameter change allows separation power to be controlled independently of pressure loss, as the vortex strength is determined by rod basket rotation rather than gas flow velocity through the separator.
3Reliability
If a rod basket is integrated into the cyclone separator, then the vortex is pre-accelerated and separation efficiency improves, but the device complexity increases
Solution Approach 1:
The rod basket separator and cyclone separator are merged into a single integrated device, with the rod basket positioned inside the cyclone separator. This combination allows the pre-accelerated vortex from the rod basket to directly feed into the cyclone separator, improving separation efficiency while consolidating functions into one unit.
Solution Approach 2:
The integrated device performs multiple functions: the rod basket both separates coarse material through its rods and pre-accelerates the carrier gas to create a vortex for the cyclone separator. This multi-functionality reduces the need for separate devices and simplifies the overall system despite the added complexity of the rod basket mechanism.
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 integration of a rotating rod basket with a cyclone separator increases separation efficiency by enabling a larger immersion pipe diameter, reducing pressure loss, and optimizing the cyclone geometry ensures that the pre-accelerated vortex is maintained, resulting in improved separation of granular material fractions with reduced compressor power requirements.
Implementation Method 1
In the vortex, the granular material becomes separated from the carrier gas as a result of the centrifugal force
Implementation Method 2
a cyclone separator in which the material which is suspended in a gas stream is forced into a vortex in a cone. In the vortex, the granular material becomes separated from the carrier gas as a result of the centrifugal force
Implementation Method 3
the granular material becomes separated from the carrier gas as a result of the centrifugal force
Implementation Method 4
the carrier gas can flow away with ease via the immersion pipe as a result of the low density
Implementation Method 5
the denser, granular material collects in the tip of the cone, however, where it falls out of an outlet
Data Source
AI summary
A cyclone separator wherein the tapered tip of the conical hollow body faces downwards. The air separator has at least one immersion tube which abuts the conical wall of the conical hollow body and which protrudes upwards within the conical hollow body, the conical hollow body tapered tip which faces downwards being connected to an outlet for fine material. The first cylindrical hollow body is equipped with a rotating rod basket which is enclosed by a static circular conveyor trough for coarse material, the conveyor trough resting against the lower outer circumference without contacting same. The conveyor trough for coarse material is connected to an outlet out of the cylindrical hollow body, and the volume enclosed by the rod basket is fluidically connected to the conical hollow body.