07.09.2021 | A 15 m high spray tower with a flexible, modern nozzle spray system represents the "heart" of our new spray drying plant "Tower 12". It is configured for a capacity of 650 - 750 kg per hour, depending on the type of product being sprayed. The tower and the entire plant are designed for infant-high-care productions.
A specific challenge is the wide range of different products with their very diverse requirements that will be sprayed on the new tower. First of all, a specific, individually adjusted processing process is defined for each product.
For an optimal control of the spray-drying process, a continuous measurement of different process parameters is carried out. Thanks to the comprehensive documentation of all process settings, detailed batch reports can be automatically generated for each production batch. This ensures a seamless control and allows a wide analysis of each production.
By individually adjusting of e.g. the nozzle configuration or the fine powder recirculation, we can control important parameters in the spraying process such as particle size distribution, flowability and bulk density in a very targeted manner. If required, a gravimetric dosing system automatically adds the flowing agent directly into the tower. Finally, the powder properties can be further modified in the fluid beds. This results in an optimal spray product according to the specific requirements of our customers.
The cyclone air speed for exhaust air cleaning can be individually adapted to the respective spray dried product. Even at low air speeds, the cyclones have a high degree of separation and are therefore particularly product-protecting.
The powder is first filled into big bags directly under the spray tower, from which it is later packed into bag-in-box systems of 5 kg to 25 kg capacity on the largely automated, separate packing lines. The decoupling of the packaging process from the spraying tower ensures more flexibility in the packaging options as well as an optimal use of the tower capacity.