Venturi-Cyclone Particle Capturing System for Fine PM2.5 Removal
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Solution Overview
Problem
Conventional dust and particle treatment systems in high-tech manufacturing struggle to effectively capture fine and ultra-fine particulate matter (PM2.5 and PM10) from exhaust gases, leading to air pollution and environmental hazards, as existing gas scrubbers often fail to remove these small particles efficiently.
Innovation Solution
A particles capturing system comprising a venturi filter device with a cyclone filter and multiple nozzles, where the venturi filter device has a narrow neck portion to increase air speed and a cyclone filter device with telescoping filter units and mist nozzles to enhance particle collection, utilizing a combination of centrifugal and gravitational forces and misting to capture particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional gas scrubbers are used to remove particles from exhaust gas, then coarse particles can be removed, but fine particles (PM2.5 and smaller) cannot be effectively captured
Solution Approach 1:
The system divides particle capture into multiple stages: the venturi filter device captures larger particles through inertial impaction and centrifugal force, while the cyclone filter device captures finer particles through enhanced centrifugal separation. This segmentation allows each component to specialize in different particle size ranges, achieving comprehensive capture efficiency without requiring a single overly complex device
Solution Approach 2:
The cyclone filter device is positioned within or adjacent to the venturi filter device, creating a nested configuration where the exhaust gas flows sequentially through both filtration mechanisms. This nesting allows the system to maintain compact footprint while integrating multiple filtration functions, resolving the contradiction between capture efficiency and system complexity
2Object-generated harmful factors
If exhaust gas is led through a scrubber to remove particles, then chemical substances and particles can be removed, but small particles still pass through and block exhaust ducts
Solution Approach 1:
The venturi filter device performs preliminary particle removal through inertial impaction and centrifugal force before the gas enters the cyclone filter device. This preliminary action captures larger particles that would otherwise burden the cyclone system, allowing the cyclone to focus on finer particles and preventing duct blockages from accumulating fine particulate matter
Solution Approach 2:
The system replaces conventional wet scrubbing mechanisms with mechanical separation forces (inertial impaction in the venturi and centrifugal force in the cyclone). This substitution eliminates the need for liquid scrubbing media while achieving superior particle capture, particularly for fine particles that pass through traditional scrubbers, thereby preventing duct blockages
3Manufacturing precision
If multiple filter units with different sizes are used in the cyclone filter device, then particle capture efficiency is improved, but the device structure becomes more complex
Solution Approach 1:
The cyclone filter device incorporates multiple filter units with different sizes that can be selectively activated or adjusted based on the particle size distribution in the exhaust stream. This dynamic configuration allows the system to optimize performance for different operating conditions without requiring a permanently complex structure, resolving the contradiction between separation efficiency and device complexity
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 system effectively captures particles and dusts by increasing air speed through the venturi filter and utilizing centrifugal and gravitational forces in the cyclone filter, along with misting, to improve particle collection efficiency and reduce air pollution.
Implementation Method 1
The venturi filter device has an air intake portion, a neck portion and an air outlet portion. The height of the air outlet portion is greater than the height of the air intake portion. The neck portion is disposed between the air intake portion and the air outlet portion. The inner diameter of the neck portion is smaller than the inner diameter of any of the air intake portion and the air outlet portion.
Implementation Method 2
The cyclone filter device, disposed along the center axis in the air outlet portion, has a plurality of filter units.
Implementation Method 3
The plurality of first nozzles, disposed inside the venturi filter device, have a height greater than another height of the the neck portion. Each of the plurality of first nozzles is to provide a first mist having a spray direction substantially parallel to the center axis of the venturi filter device, and the plurality of first nozzles are to spray toward the neck portion.
Data Source
AI summary
A particles capturing system includes a venturi filter device, a cyclone filter device, a plurality of first nozzles and air to flow through the system. The venturi filter device has an air intake portion, a neck portion and an air outlet portion. The cyclone filter device, disposed in the air outlet portion, has an entrance and an exit. The plurality of first nozzles, disposed inside the venturi filter device, have a height greater than that of the the neck portion. When the air flows, the air enters the venturi filter device via an air inlet of the air intake portion, then orderly passes through the neck portion and the plurality of first nozzles, then enters the cyclone filter device via the entrance, and finally leaves the cyclone filter device via the exit, such that particles in the flowing air can be captured.