U+A Process Engineering offers static mixers and heat exchangers for use at high pressures and temperatures, such as plastic melting plants, for gentle homogenization of the product.
Example: double tube heat exchanger with helix mixing elements
This combination offers high process reliability with the lowest possible pressure loss, for the gentle thermal heat treatment of highly viscous fluids.
The product flow is moved from the pipe wall to the center of the pipe by the radial flow of the spiral mixing elements. In addition, each of the mixing elements divides the current and reverses the direction of rotation whereby a product-friendly heat transfer with simultaneous homogenization is achieved. Temperature and flow gradients are reduced.
A consistent quality of the end product is guaranteed in this way.
In connection with special flanges for a sealless connection, suitable Mixing elements as well as special welding and soldering processes, our static mixers and heat exchangers can be customized.
We offer almost all available stainless steels as materials in sizes DN 3 – DN 2000.
The static solids mixer from U+A Process Engineering GmbH offers an economically and process-technically interesting solution for the gentle homogenization of free-flowing solids such as grains, foodstuffs, granules, color pigments, types of powder and much more. With this static mixer, almost all free-flowing solids can be mixed together.
The solids mixer guarantees consistent mixing quality in free fall without a motor drive.
Since it has no moving parts, it is practically maintenance-free with a very high level of production reliability.
Existing systems can be upgraded with reasonable effort, since the construction is compact and the installation height is low.
The solids mixers are specifically designed for each individual customer application.
As possible materials we offer almost all available stainless steels and plastics in sizes DN 15 – DN 2000 .
Especially for the food and pharmaceutical industries the mixers can also be manufactured in a nickel-soldered, polished or coated design.
The static solid mixers from U+A Process Engineering GmbH are installed vertically and charged with the components to be mixed via one or more dosing systems.
The functional principle of the solids mixer follows that of our helical static mixers, in which the individual helix mixing elements are offset from one another by 90 °.
The helical mixing elements generate, by the alternating arrangement of left-and right-handed mixing elements, a reversal of the rotation direction and a current division.
In the process the first mixing element generates two rotating vortices, which are performed simultaneously radially over the pipe cross section.
On impact with the following mixing element, the first two rotating vortices are splitted into two new vortices which are forced to rotate into the other direction.This process is repeated until the desired homogeneity is reached.
Due to the design, this type of construction guarantees radial flow conduction over the pipe cross-section and thus satisfactory mixing results even at low flow velocities. In this way, mixtures with very different proportions (mixing ratios> 1: 1000) of the individual components can be implemented in the finished mixture.
As standard, the mixers are made of stainless steel, but all suitable plastics or special materials can also be used if required. For products where sticking or agglomeration is conceivable, a vibration module can be integrated as a remedy.
The areas of application are in plastics production for mixing different granulates, adding masterbatches, regranulates or other polymers, or very small amounts of additives required for further processing.
In the food industry, the applications are in the mixing of different solids of all kinds. On the one hand, candies of different flavors and colors or chocolate buttons, on the other hand, the ingredients of ready meals and ceral mixes are mixed before preparation. In these applications, different requirements are always placed on the mixer, which, however, are met by a suitable design.
Furthermore, static solid mixers have proven themselves in the agricultural industry (mixing of seeds etc.) and in the building materials industry for any powdery mixtures (for example admixture of color pigments, additives and additives) because of the consistent mixing quality and high production reliability.
The typical applications are in all areas in which constant mixing is required in-line; here, due to the further development of the mixing elements, a constant throughput is not necessary.
The following advantages should be mentioned:
Operation of U+A Heat Exchangers
Our tube bundle or double-tube heat exchanger are equipped with static mixing elements, for thermal gentle heat treatment of highly viscous liquids.
This equipping of the heat exchanger results in significant advantages:
The performance of the heat transfer can be increased up to 6-fold compared to a conventional heat exchanger.
The product flow is moved from the pipe wall to the center of the pipe by the radial flow of the spiral mixing elements. In addition, each of the mixing elements divides the current and reverses the direction of rotation whereby a product-friendly heat transfer with simultaneous homogenization is achieved. Temperature and flow gradients are reduced.
A consistent quality of the end product is guaranteed in this way.
The retrofitting of existing heat exchangers with static mixers is also possible without any problems, because the mixing elements are available in welded, brazed or removable versions.
By retrofitting existing heat exchanger with static mixing elements chains, the heat exchanger capacity may be increased. Product damage on the tube inner wall can be avoided. The use of higher temperatures of the heating medium is now possible.
Advantagers of U + A Heat Exchangers
1. Up to 6-fold increase in performance of heat transfer
2. Easy cleaning thanks to removable mixing elements.
3. Mixing elements can also be adapted to sensitive media
4. Maintenance-free and low wear, because there are no moving parts
5. Easy retrofit into existing systems
As the customer’s wishes are our top priority, we manufacture our mixers in almost all desired materials. Whether the material selection focuses on chemical or corrosive resistance or whether the mixer should also fit perfectly into the existing pipeline in terms of appearance. There are almost no limits to the choice of material. In the field of plastics, we manufacture e.g. from PVC, PP, PE, GRP etc. and in the field of metallic materials from e.g. H II, St 37, St55, 1.4571, 1.4541, 1.4535, AISI 316L, 304L, titanium, zirconium, Hastelloy, Monel etc. In addition, we offer our mixers with various coatings, such as PTFE or PVDF, in order to be able to selectively counteract corrosive or chemical influences.
U + A is offering various designs of mixing elements.
The selection of the mixing elements and the required number depends on the mixing task.
As possible materials, we offer almost all available stainless steels and plastics in sizes 3 – 2500 mm.
Some standard forms are presented below.
Helical Mixing Elements ( the All-rounder) | Helical mixing elements are very suitable for the most applications.
The helical mixing elements generate, by the alternating arrangement of left-and right-handed mixing elements, a reversal of the rotation direction and a current division.
In the process the first mixing element generates two rotating vortices, which are performed simultaneously radially over the pipe cross section.
On impact with the following mixing element, the first two rotating vortices are splitted into two new vortices which are forced to rotate into the other direction.
This process is repeated until the desired homogeneity is reached.
With this type of mixer, the pressure loss is low in relation to the mixing quality.
The number of elements is calculated specifically for each application.
The installation options for these mixing elements are welded in, soldered using hard solder or removable. The cutting edges can be adapted to the application, so a dead space-free design is possible.
MV Mixing Elements (for fibrous and / or granular components) | The MV mixing elements from U + A are designed in such a way that there is practically no risk of clogging when there is a high proportion of fibrous and / or granular components flowing through them.
The individual mixing elements form tornado-like swirls which will be interwoven.
Thanks to these excellent properties, it is possible to mix in all kinds of dosing chemicals within a very short time.
SW Mixing Elements ( special helix mixer) | The advatages of the SW Mixing Elements are similar to those of the conventional helix mixer. These mixing elements can also be designed to be permanently integrated or removable. In order to increase the mixing performance with the same design, other changes to the geometry can be made.
PEW mixer (for emulsions or for liquid – gas – dispersion) | The PEW mixing elements are best suited for the production of emulsions or gas-liquid dispersion. The ceramic material used is suitable for most aggressive media. This material is also well suited at high temperatures (for example in exhaust gas cleaning).
All Mixing – Elements are manufactured specifically for the application.
Production takes place in Germany in order to keep delivery times short and to be able to react quickly to changing customer needs.
Alternatively, the enquiry form can be downloaded as a PDF.
Alternatively, the enquiry form can be downloaded as a PDF.
Alternatively, the enquiry form can be downloaded as a PDF.
