Cyclone Pure Gas Line Boundary Layer Control
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Solution Overview
Problem
Conventional cyclones face inefficiencies in separating solid particles from exhaust gas flows due to boundary layer flows with high solid particle concentrations, which negatively impact separation performance and require significant energy and resources.
Innovation Solution
The introduction of a pure gas line that supplies pure gas to the inner wall section of the cyclone, where the boundary layer flow forms, to replace the boundary layer flow with a lower solid particle concentration, ensuring the pure gas integrates smoothly with the exhaust gas flow without turbulence, thereby reducing the boundary layer's negative effects on separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cyclones are used for separating solid particles from exhaust gas flow, then the separation process is simple and requires less power, but the separation performance is insufficient to meet current standards due to boundary layer flow with high solid particle concentration
Solution Approach 1:
The patent extracts and removes the harmful boundary layer flow with high solid particle concentration from the cyclone system by introducing a pure gas line that supplies clean gas to the inner wall section, effectively separating the harmful boundary layer from the main gas flow path
Solution Approach 2:
The patent applies local quality by introducing pure gas specifically to the inner wall section where the boundary layer forms, creating a localized region of low solid particle concentration that prevents contamination of the separated exhaust gas without affecting the entire cyclone system
2Reliability
If e-filters and bag filters are used to achieve high dedusting performance, then the separation performance is high, but operating and energy costs are considerable
Solution Approach 1:
The patent uses pneumatic principles by introducing a controlled flow of pure gas through a dedicated gas line to modify the boundary layer characteristics, achieving enhanced separation performance through fluid dynamics rather than mechanical filtration
Solution Approach 2:
The patent changes the physical parameters of the gas flow by introducing pure gas at specific locations and flow rates, modifying the boundary layer properties to reduce solid particle concentration without requiring high-energy filtration systems
3Device complexity
If an immersion pipe is used as outlet opening in conventional cyclones, then the structure is simple, but boundary layer flow forms along the jacket surface with increased solid particle concentration that contaminates the purified exhaust gas
Solution Approach 1:
The patent introduces pure gas as an intermediary substance between the boundary layer and the main gas flow, creating a protective barrier that prevents solid particles from the boundary layer from entering the purified exhaust gas stream
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 enhances the separation performance of cyclones by minimizing the discharge of solid particles through the purified exhaust gas flow, achieving improved dedusting efficiency with reduced energy consumption and operational costs.
Implementation Method 1
The exhaust gas flow which is mixed with solid particles and is to be cleaned is conveyed in an exhaust gas line towards the cyclone... The solid particles which are entrained in the exhaust gas flow are ejected by centrifugal forces against the inner wall of the housing
Implementation Method 2
The solid particles which are entrained in the exhaust gas flow are ejected by centrifugal forces against the inner wall of the housing and will descend as a result of gravity into the bottom region of the housing
Implementation Method 3
at least one pure gas line used to feed pure gas is provided, with said pure gas line either opening into an inlet area provided in the exhaust gas line before the inlet opening as viewed in the flow direction of the exhaust gas flow, or opening directly into the inlet opening, and said pure gas being fed to an inner wall section of the housing, at which inner wall section a boundary layer flow having an increased concentration of solid particles compared to the exhaust gas flow mixed with solid particles would develop if the pure gas were not supplied
Data Source
AI summary
A cyclone for separating solid particles from an exhaust gas flow includes a housing with a jacket area that is cylindrical at least in some sections, with a cover area, and with a bottom area. An exhaust gas line opens into an inlet opening and is for an exhaust gas flow mixed with solid particles. A discharge opening is for the solid particles separated from the exhaust gas flow. An immersion pipe has a penetration area passing through the housing and has an open end area protruding into the interior of the housing and used as an outlet opening for the purified exhaust gas flow from the housing. At least one pure gas line supplies pure gas, creating a second boundary layer flow to replace a first boundary layer flowing having an increased concentration of solid particles.