Rotary Atomizer Gas Scrubber for Ultrafine Particle Removal
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Solution Overview
Problem
Conventional gas scrubbers are inefficient in removing ultrafine particles from waste gases, especially those with diameters less than 1 μm, due to their large size, weight, and high pressure drop, making them difficult to transport and install, and they often require additional media like compressed air for atomization.
Innovation Solution
A compact gas scrubber design featuring a rotary atomizer that uses centrifugal force to atomize the scrubbing liquid into fine droplets without the need for high pressure or compressed air, combined with a rotor-stator array and baffle plates to enhance particle removal efficiency, allowing for efficient treatment of waste gases with minimal equipment and reduced pressure drop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional gas scrubbers are used to remove ultrafine particles from waste gases, then particle removal is achieved, but the device becomes large in size, heavy in weight, and requires high pressure drop
Solution Approach 1:
The patent changes the physical parameters of the scrubbing liquid by using a rotary atomizer to transform it from a continuous stream into fine droplets with large surface area. This parameter change allows the scrubbing liquid to effectively capture ultrafine particles without requiring large device dimensions or high pressure drops, thus resolving the contradiction between particle removal efficiency and device weight
Solution Approach 2:
The patent introduces dynamic elements (rotating atomizer, rotor-stator array) to create turbulent flow and enhance mass transfer between gas and liquid phases. The dynamic operation allows compact design while maintaining high particle removal efficiency, avoiding the need for large static structures that would increase device weight
2Reliability
If conventional gas scrubbers are used to remove ultrafine particles from waste gases, then particle removal is achieved, but the device becomes large in size and difficult to transport and install
Solution Approach 1:
By changing the state of the scrubbing liquid from bulk flow to atomized droplets, the patent achieves high particle removal efficiency in a compact configuration. This allows the device to be small enough for easy transport and installation while maintaining effective ultrafine particle removal
Solution Approach 2:
The patent segments the scrubbing liquid into numerous small droplets through the rotary atomizer, increasing the gas-liquid contact surface area. This segmentation enables compact device design that is easy to transport and install, while still achieving high particle removal efficiency through the cumulative effect of many droplet-gas interactions
3Reliability
If conventional gas scrubbers are used to atomize scrubbing liquid, then particle removal is enhanced, but additional media like compressed air are required
Solution Approach 1:
The rotary atomizer uses the kinetic energy of the rotating rotor itself to atomize the scrubbing liquid, eliminating the need for external compressed air or additional media. The system serves itself by using its own operational energy to create the necessary droplet formation, thus reducing device complexity and media requirements while maintaining particle removal efficiency
Solution Approach 2:
The patent extracts the atomization function from the conventional compressed air system and integrates it directly into the rotor-stator array mechanism. By taking out the external media requirement and incorporating atomization into the core rotating structure, the device achieves particle removal efficiency without the complexity of additional media systems
4Reliability
If conventional gas scrubbers are used, then waste gas treatment is achieved, but the pressure drop is high
Solution Approach 1:
By changing the scrubbing liquid from bulk flow to atomized droplets, the patent increases the effective contact surface area between gas and liquid. This parameter change allows for lower pressure drop while maintaining high particle removal efficiency, as the atomized droplets are more effectively distributed throughout the gas stream without requiring high pressure forcing
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 solution achieves a higher degree of purity in cleaned waste gases by effectively removing particles and dust, improving the compactness and efficiency of the gas scrubber system while reducing the need for additional media and simplifying installation, allowing for decentralized applications.
Implementation Method 1
A compact gas scrubber design featuring a rotary atomizer that uses centrifugal force to atomize the scrubbing liquid into fine droplets without the need for high pressure or compressed air
Implementation Method 2
the rotor arrays and the stator arrays are arranged alternatingly and concentrically relative to each other, so as to generate turbulence, the rotor arrays and the stator arrays are arranged alternatingly and concentrically relative to each other, so that particles from the waste gas stream can be transferred into the liquid
Implementation Method 3
Gas scrubbers serve to remove solid, liquid or gaseous contaminants from a gas, whereby the contaminants are bound to the scrubbing liquid that has been introduced into the gas stream and are precipitated together with the scrubbing liquid
Data Source
AI summary
A gas scrubber and a waste gas treatment system with a gas scrubber for removing particles from a waste gas has a housing with a waste gas inlet and a waste gas outlet. A substantially circular plate member defining an axis of rotation is rotatably arranged in the housing. Waste gas fed into the housing via the waste gas inlet is directed toward approximately the center of the circular plate member. An outlet nozzle sprays a liquid, especially a cleaning liquid or a scrubbing liquid, onto the circular plate member, in order to obtain a mixture of waste gas and liquid in front of the plate member. A combination of inner and outer rotor arrays, and inner and outer stator arrays are arranged alternatingly and concentrically relative to each other, and separated from the circular plate member, and rotate about the axis of rotation. A rotary atomizer for atomizing the mixture of waste gas and liquid may be arranged on the circular plate member. Particles from the waste gas stream are transferred into the liquid.