The static mixer type MV is the practical solution for streams containing fibers and solids and has proven itself for over 10 years.
Its areas of application are primarily in drinking and wastewater treatment, as well as in the food and pulp industry.
Thanks to its special mixing element geometry the static mixer type MV is working reliably and without clogging even under extreme conditions, for example with long fibers carried in the liquid flow.
The individual mixing elements are creating massive radial flow components and tornado-like swirl in the flow.
The MV mixing elements are designed in such a way that there is practically no risk of clogging when there is a high proportion of fibrous or granular components flowing through them. Thanks to these excellent properties, it is possible to mix in all kinds of dosing chemicals within a very short time.
Well-engineered injection techniques are available for dosing particularly small quantities or very high viscosity.
Due to the high mixing intensity of type MV as well as the use of high-quality dosing techniques in special cases, the user can get by with smaller quantities of chemicals, thus product consumption and operating costs can be reduced.
Operation as Heat Exchanger
The MV mixer can also be used as a heat exchanger in the form of a double-walled tube.
The rotating flow guidance created by the clogging-free mixing elements causes an increase in heat transfer that is gentle on the product and ensures the reduction of temperature gradients, in addition the product is mixed very homogeneously.
The mixing of additives into digested sludge in sewage treatment plants or the gentle introduction of pieces of fruit into yoghurt, as well as the pulp industry with its fibrous product streams, can be named as application examples.
Zur Erzeugung von kleinen Gasblasendurchmessern in Flüssigkeiten bietet U+A Process Engineering GmbH eine betriebswirtschaftlich und verfahrenstechnisch interessante Lösung aus einer Kombination von Statischem Mischer und Injektor an.
Diese Kombination verbessert die Disperionsqualität auch bei schwankendem Volumenstrom.
Da beide Apperate keine beweglichen Teile enthalten sind diese Langlebig und einfach zu reinigen.
Die Kombination wird für jeden Anwendungsfalles spezifisch ausgelegt.
Als mögliche Werkstoffe bieten wir fast alle lieferbaren Edelstähle und Kunststoffe in den Baugrößen DN 15 – DN 2000 an.
Speziell für die Lebensmittel- und Pharmaindustrie führen wir die Mischer und Injektor auch in Nickelverlöteter oder polierter Ausführung aus.
Zum Eintrag kleiner Gasmengen
bietet U+A eine Kombination an bei der das Gas direkt durch ein Lanzensystem mit Injektor oder einem vorgeschalteten Injektor dem Hauptstrom zu dosiert wird können durch den Injektor Gasblasendurchmesser kleiner als 1 mm erzeugt werden. Der nachgeschaltete statische Mischer hat die Aufgabe, die Gasbläschen weiter zu verkleinern, deren Wachstum zu verhindern, Reaktionszeit zu schaffen und die Verteilung im Hauptstrom zu realisieren. Mit wachsender Strömungsgeschwindigkeit verringert sich der Blasendurchmesser und steigert sich die Reaktionsfläche.
Zum Eintrag großer Gasmengen bietet U+A eine komplettes Dispergiersystem an.
Dieses besteht aus einem Hauptmischer , einer Beipasspumpe , einem Venturiinjektor sowie einem Vormischer.
Bei diesem System wird aus dem Hauptstrom mit der Beipasspumpe ein Nebenstrom entnommen, welcher mittels des Venturiinjektors das Gas ansaugt und im Vormischer vormischt. Nach diesem Vorgang wird das Gemisch dem Hauptstrommischer zugeführt und hier weiter vermischt. Die Gas-Flüssigreaktion kann somit abgeschlossen werden.
Die oben genannten Ausführung bieten viele Einsatzmöglichkeiten wie z.B. in der Ozonbehandlung von Schwimmbeckenwasser, den Eintrag von Sauerstoff in der Biotechnologie, Trinkwasserreinigung oder zur chemischen Reaktionstechnik. Gerade hier wird oft mit toxischen, reaktiven und teuren Gasen gearbeitet, deren Verbrauch aus Kostengründen so niedrig wie möglich gehalten werden sollte.
For the generation of small gas bubble diameters in liquids, U + A Process Engineering GmbH offers an economically and process-technically interesting solution consisting of a combination of static mixer and injector.
This combination improves the quality of the dispersion even with fluctuating volume flow.
Since both devices do not contain any moving parts, they are durable and easy to clean.
The combination will be specifically designed for each 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, we also offer mixers and injectors in nickel-soldered or polished versions.
For the entry of small amounts of gas | U + A offers a combination in which the gas is metered directly into the main flow through an upstream injector or a lance system with an injector.
Tests have shown that gas bubble diameters smaller than 1 mm can be generated in the injector. The downstream static mixer has the task of further reducing the size of the gas bubbles, preventing their growth, creating reaction time and optimizing the distribution in the medium. As the flow rate increases, the bubble diameter decreases and the reaction area increases.
For the entry of large amounts of gas | U + A offers a complete dispersing system.
This consists of a main mixer, a bypass pump, a Venturi injector and a premixer.
In this system, a bypass pump takes a bypass flow from the main flow, which sucks in the gas by means of the venturi injector and premixes it in the premixer. After this process, the mixture is fed to the main flow mixer, where it is mixed further. So the gas-liquid reaction can be completed.
The above versions offer many possible uses, for example in the ozone treatment of swimming pool water, the entry of oxygen in biotechnology, drinking water purification or for chemical reaction technology. Here in particular, toxic, reactive and expensive gases are often used, the consumption of which must be kept as low as possible for reasons of cost.
Over 25 years U+A is offering static mixers made of steel with lining for specific operating conditions which makes the use of particularly resistant materials necessary.
All parts of our static mixers which are in contact to the medium are designed to be corrosion-resistant. In the case of lined static mixers, only the lining is made of high-quality material and therefore this design has mainly economic benefits. For example: Compared to a static mixer made of Hastelloy a PFTE lined static mixer can reduce the acquisition cost about 50%.
Depending on the application, nickel-based materials or plastics are also available.
The selection of the suitable lining depends on the application.
PTFE, PVDF, PFA, PP, PVC and PE are available for the lining and steel, stainless steel or GRP pipes with the desired connections are available for the pipe part.
Examples of applications are: Use cases in the aggressive and / or corrosive media such as boiling amyl acetate, concentrated sulfuric or nitric acid, toluene, fluorine, chlorine or bromine are to be conveyed and mixed.
Areas of application are for example: Pickling plants when mixing the pickling solutions and their subsequent reprocessing or to adjust the pH value of process water if the dosage of aggressive chemicals is required.
The lined static mixer is also enjoying increasing popularity in the food and paint industry , because of the low adhesion of the media to PTFE. Color pigments or additives can be mixed in inline and the cleaning effort when changing batches or starting shifts is reduced to a minimum, so that not only the result remains constant, but productivity is also increased
We supply our Static Mixers, Heat Exchangers and Injectors in practically all obtainable precious metals and plastics in nominal widths between DN 3 and DN 2500 mm.
Our products are manufactured in accordance with customer requirements at the facilities of our highly qualified contract partners in Germany with the following production authorisations: DIN ISO 9001, DGRL 97/23/EG, WHG § 19, AD-HP 0, Bureau Veritas, Germanic Lloyd, ÖN M 7812, § 14, BGBI Pressure Vessel Code, China Stamp, U Stamp, U2 Stamp, Det Norske Veritas. Almost no limits are set to other requirements.
DGRL, AD, TRB, TRD, TÜV, ASTM, TEMA, BS, Stoomwezen and others.
Hydro, Nekal, Frigen, Helium and others
Ultrasound (subsonic), magnetic powder, colour penetration, x-ray test as well as special tests.
Zirconium, Titanium, Hastelloys, Incoloys, and Inconels and others.
This enables us to meet the highest quality and testing requirements. The manufacturing can be carried out accorsing to customers spacifications in any case.
Send us your request with your technical requirements,
our specification data sheet will support you.
We look forward to your inquiries and remain, with best regards
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.
Materials | Almost all steels, stainless steels and plastics can be used as materials. Whether the material is chosen based on the selection of the remaining system or whether it has to have certain resistances, the mixer can in principle be manufactured in the same material.
The steel version includes, for example:
H II, St 37, St 55, DIN 1.4571, 1.4541, 1.4535, AISI 316L, 304L, Titanium, Zirconium, Hastelloy, Monel
Plastic version for example in: PVC, PP, HDPE, PVDF, PTFE
In addition, mixer housings made of steel or GRP can be provided with linings made of PTFE, PVDF, PFA, PP, PVC or PE in order to combine chemical resistance with mechanical resistance
Surfaces | The surfaces of the pipe inner walls as well as the individual mixing elements can be delivered in different qualities.
Pipe inner walls: honed or lapped
Mixing elements: mechanically polished, electropolished
In the case of metallic materials, the permanently installed mixing elements can be welded in the pipe or alternativly soldered in the pipe without gaps by using nickel solder, this offers the advantage that there are no nests or gaps for the product to deposit.
Removable elements are placed precisely in the pipe, so the operator has the option of removing the mixing elements for cleaning purposes.
Which installation variant is suitable for you depends on your application, we would be happy to advise you.
Static mixers from U+A are customized and are particularly characterized by their compact design, the absence of moving parts and the continuous operation.
With their hygienic design, they offer very good mixing and homogenizing performance and are suitable for numerous tasks in the processing of food and pharmaceuticals in liquid, gaseous and solid form as well as for heat exchange.
They can be dimensioned for almost any volume flow, any density, viscosity and other specific product properties.
For this purpose, U + A has 18 different mixer types available, from helical mixers to non-clogging special designs as well as a large number of aseptic connections.
In connection with the surface-treated inner walls of the pipe and the possibility of soldering the mixing elements in the pipe without gaps, the formation of nests and gaps is almost impossible, so that product residues can be avoided. Thus reduces the cleaning effort to a minimum.
For particularly good visual control of the cleaning removable mixing elements are available.
Even the high requirements of the pharmaceutical industry can be met.