amixon® helps with the dimensioning of large vacuum mixer dryer systems

Here, the experts at amixon provide detailed answers to a variety of technical questions!

amixon® vacuum mixing dryers and synthesis reactors are used for almost all types of bulk solids and suspensions. Due to the large specific heat transfer surfaces, amixon® devices are also used as evaporators.

The compact amixon® vacuum dryers are characterized by the following properties:

• outstanding energy efficiency

• very gentle product movement

• large specific heat transfer surface

• very high drying speed

• gentle drying due to targeted vacuum setting

• ideal mixing quality

• particularly hygienic design

• amixon® apparatuses are also used as sterile reactors in the biochemical and pharmaceutical industries.

How can amixon® help with the transfer of laboratory results to technical scale?

When new products or processes are developed, questions of technical implementation must be examined in parallel. Scaling up from a test tube to an industrial plant is not trivial.

The pilot plant is used to define process parameters that lead to similarly good results as those previously achieved by the researchers in the test tube.

amixon® is a manufacturer of process engineering systems and has its own pilot plants. The systems there are fully functional. They are dimensioned in such a way that they can be used to design large-scale industrial plants.

How do you extrapolate from a pilot plant to a large-scale plant?

Difficulties arise when the industrial plant to be set up is 100 times larger than the process machine in the pilot plant. For thermokinetic issues, geometric similarity considerations fail. Practical know-how in the application of thermodynamic calculations helps here.

amixon® helps with extrapolation to process machines that are many times larger than the test plant. The accuracy of our calculation methods has been proven time and time again by amixon®. Namely, whenever the large-scale system in the industrial environment achieves or exceeds the calculated performance.

amixon® is happy to invite customers from near and far to take part in trials and promises them very good results in advance. We can do this thanks to decades of experience.

Drying tests in the amixon® technical center are always target-oriented and provide a high level of knowledge. amixon® protects the information shared with you from third parties. This means that the exchange of information always remains confidential.

Drying tests differ from classic mixing tests. The process time is considerably longer. A lot of data is recorded during the drying process in the amixon® technical center. This is largely automated.

This leaves enough time to discuss constructive details. A detailed factory tour should always take place. Some customers use the time to carry out mixing tests for the subsequent process. Others use the time for agglomeration tests.

Are there any special features of processes that take place at high temperatures and high pressures?

Tests can also be carried out under extreme process conditions in the amixon® technical center:

• System pressure in the process area up to 25 bar overpressure: The thicker container walls influence the heat transfer. On the other hand, the temperatures in the process area can be changed extremely quickly by changing the system pressure. If the system pressure in the process area is increased, gas-solid reactions, for example, can be favoured. For example, diffusion processes ....

• Heating up to 350°C: Conventional polymer seals fail when temperatures permanently exceed 240 °C. Then only metallic sealing systems or graphite gaskets can be used.

• Fine vacuum of 1 mbar absolute: Such absolute pressure requires the apparatus and all communicating connecting lines to be extremely tight. This applies in particular to the sealing of the agitator shaft.

On the amixon blog, the experts answer more questions. Visit the amixon blog and learn more!