Continuous Glatt fluid bed granulator type GFG 750
Principle of fluid bed technology in a continuous plant of the Glatt GF series
Whether spray granulation or encapsulation of liquids, agglomeration of powders or coating of particles – the plug flow through the process chambers allows the combination of the processes as well as the following drying and cooling. The way you need it.
Glatt fluidized bed granulators GFG with elongated, rectangular fluidized bed enable targeted material movement through the process chamber. This can be divided into zones if required. This makes it possible to introduce process air into the process at different flow rates and different temperatures.
Due to this flexibility and the different arrangement of the nozzles in the process chamber, completely different conditions can be set in different zones of the process chamber. This allows the particles to be selectively exposed to different process conditions one after the other, enabling multiple process steps in the same system – e.g. granulation, drying and cooling. And all this with continuous operation.
In order to make maximum use of the process technology flexibility of the plants, Glatt has also placed great emphasis on flexibility in the design.
The standard plant consists of the following assemblies: process chamber, internal filter, feed, discharge and spray system. These assemblies can be adapted independently of one another to meet the respective requirements. If required, the filter is replaced by a cover and installed externally. The installation of the nozzles can be designed in such a way that their arrangement can be changed even after the plant has been commissioned. This allows the plant to be quickly and easily adapted to new process requirements and product properties.
Depending on the quality requirements of the end product, Glatt offers two versions:
Chemical standard
Food standard
Glatt’s range of products and services for fluid bed plants of the GF seires includes both the design according to the application in the chemical, food, feed or pharmaceutical industries, and the peripheral equipment such as process air conditioning, dust removal, explosion protection, WIP/CIP systems, raw material supply or product handling.
In this diagram, powder is agglomerated above the first two feed air chambers, the agglomerate is dried in the third chamber, and cooled in the fourth. The finished product is discharged at the end of the process chamber.
Continuous Glatt fluid bed granulator type GFG 500
Principle of continuous fluid bed in a round Glatt multi-chamber design
Alternative fluidized bed ring concept
As with horizontal arrangement in rectangular design, several process steps are possible one after the other. The solid feedstock is continuously fed and moves through the plant in a circular pattern. The process area is divided into chambers. The first chambers can be equipped with nozzles for granulation or coating. In the last chamber the product is dried before it leaves the plant.
This means that the fluid bed principle can also be applied in a round plant of the AGT® series.
With extremely short installation and commissioning times, this compact plant concept, especially for processes with limited process gas volumes, offers exactly the flexibility that manufacturers appreciate. Larger capacities and subsequent expansions are also possible.
The energy-optimized equipment does not require additional air conditioning. The modular system solutions with space-saving filters are particularly suitable for confined spaces, for example also for the replacement of old equipment and production expansions in existing rooms with limited headroom.
The Atex-compliant design, equipped with wash-in-place (WIP) technology, solves two key challenges in the processing of powdery substances: cleaning processes run fully or semi-automatically, saving time, and explosive dusts can be processed safely.
Commissioning after only a short installation time is feasible because the modules are already pre-assembled. They are simply connected on site and production can start.
Continuous Glatt fluid bed granulator with GF ModFlex concept
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Mehr erfahren
Glatt fluid bed granulator GFG 1000, continuous spray granulation, silicate glass, Belgium
Glatt fluid bed granulator GFG 750, continuous spray granulation of sweeteners, USA
Glatt fluid bed coater GFC 2200, continuous coating of additives, Scadinavia
Glatt fluid bed granulator GFG 750, continuous spray granulation, phosphonates, India
Here you can find more photos: Installed plants.
Further information on this topic and related topics can also be found in the following publications:
Published article: ‘Twelve days installation time – Compact system for continuous spray agglomeration of fine powders’ PDF, German
Published article: ‘Integrated approach saves costs – Design and operation of energy-efficient fluid bed systems’ PDF, English
Published article: ‘Large-scale plant for continuous additive coating based on fluidized bed technology’ PDF, German
Published article: ‘It’s all in the combination – Coating in the food and pharmaceutical industries, part 2’ PDF, German
Published article: ‘Product safety for granulation and coating – Hygienic design for fluid bed and spouted bed systems’ PDF, German
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