Mixer with Stacked Elements
What is Mixer with Stacked Elements?
Principle
The MSE (Mixer with Stacked Elements) consists of mixing elements, a ring plate and a blind plate. Two or more mixing elements with small through holes are stacked and sandwiched between the ring plate and the blind plate with a large through hole. The small through holes of mixing elements are arranged to communicate with the small through holes in the adjacent mixing elements and communicate with the large through hole of the ring plate.
Fluids from the large through hole of the ring plate are mixed by distribution and joining with turbulence and vortex flow by passing through the small through holes and discharged from a circumference of the MSE.
- Variety of application
Applicable to a dynamic and a static mixing such as a static mixer and an agitation impeller. - Flexible design for operating condition
Outer and inner dia., size of small and large through holes and thickness of mixing elements can be designed to adjust an operating condition. A number and a pattern of mixing elements are also changed to adjust an operating condition. - Easy manufacturing
The MSE consists of only mixing elements, a ring plate and a blind plate. - Flexibility of material selection
Plastics, teflons, steels or stainless steels are available to make mixing elements and other plates due to its simple shape.
Static Mixer
The MSE static mixer requires only a short distance to mix fluids by its effective structure since it has a very simple structure with only stacked mixing elements and additional plates. The MSE static mixer may be suitable to apply to a gas mixer a liquid mixer from the view point of pressure loss.
Examples of Pressure loss
The figure below shows an experimental result of pressure loss by an air at ambient temperature. The MSE static mixer with 25mm outside diameter and 11.5mm inside diameter is in a tube with 28mm inside diameter that is almost the same with 1 inch pipe.
The mixer has 3 distribution and 2 join sections of fluids in a radius direction and 12 sections in a circumferential direction. A thickness of each element is 1.0 mm and stacked one each, two each and four each. The result shows that the maximum flow rate was approx. 7.5m/sec. by the tube i.d. basis under a pressure loss at 20kPa where an element-A and an element-B were stacked one each.
Application
Easy setup by installation of the MSE static mixer between flanges completes a mixing system.
Features
- Mixing in a short distance.
- Easy installation by inserting between flanges.
- Flexible installation according to an operating condition by changing a number and a pattern of stacked elements.
Agitation Impeller
The MSE can be used as an agitation impeller by installationof the MSE with a rotation shaft in a mixing vessel. A liquid in the mixing vessel is absorbed from an opening portion of the ring plates and discharged from the circumference of the MSE agitation impeller. The liquid are mixed by distribution and joining with turbulence and vortex flow by passing through the small through holes.
A power consumption by the MSE agitation impeller was compared with a conventional disk turbine blade. The power consumption of the
MSE agitation impeller with 30 mixing elements with 2mm thickness was almost the same with a disk turbine with 6 blades having 20mm width.
The MSE agitation impeller can mix a liquid in a mild condition since a power consumption per rotation volume was approx. 1/4 and per
surface area was approx. 1/48 at the operating condition.
Features
- Mixing in a mild condition.
- Easy set up by sandwiching mixing elements with two plates.
- Flexible design by changing only a number and a pattern of stacked elements.
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