technology to produce granules and pellets from powder and liquids
Mike Waskow, Process Engineer, Process Technology Food, Feed & Fine Chemicals, Glatt Ingenieurtechnik GmbH, Germany, explains how economical production of urea-based fertilizers can be achieved using fluidised bed technology. (Case study)
Fluidized bed and spouted bed are among the leading technologies when it comes to improving the physical properties of bulk solids, such as particle size distribution, bulk density, structure and morphology, in order to deliver beneficial application properties like enhanced dispersibility, solubility and flowability. The combination of processes such as drying, granulating and microencapsulating in a single step provides a cost-effective manufacturing solution.
To ensure that sensitive substances such as probiotics, flavors, vitamins or delayed-release active ingredients survive their journey through processing or the digestive tract, they must be functionally protected. Hot melt coating and encapsulation in the fluid bed or spouted bed offer a variety of product design options in this regard. (article in German language)
Microcapsules provide an excellent way to extend the shelf-lives of essential oils, vitamins, flavors and many other active ingredients, and protect them from external influences. A key consideration, however, is process optimization, which plays a decisive role in the quality of the ingredients and their release profiles.
Sensitive substances such as vitamins, flavors or probiotics must be well packaged to ensure that they reach their point of action safely. To ensure that they can also be released from their protective shell at the right time, fluid bed and spouted bed technologies with microencapsulation and hot melt coating offer two tailor-made finishing processes. (article in German language)
Product refinement in two acts: Whether it’s enzymes for animal feed, vitamins for dietary supplements or instant coffee for capsule systems, the search for a suitable process precedes product development. Dr. Michael Jacob, head of process engineering in the Process Technology Food, Feed & Fine Chemicals division at plant manufacturer Glatt Ingenieurtechnik, summarizes what is important when deciding between continuous and batch fluid bed production. (German article)
Better safe than sorry – design safety for fluid bed systems
Design-based explosion protection is one of the most important precautionary measures for operating fluidized bed systems in a process-safe manner. Atex-compliant designs range from explosion-suppressed to explosion-pressure-resistant apparatus. (German article)
Sensitive substances such as probiotics, vitamins or sustained release dosage forms must be furnished with a functionally protective coating to ensure their safe transport through the intestinal tract. Furthermore, the surface treatment guarantees their release at a well-defined point in time. Hot-melt fluidized bed granulation provides a variety of possibilities for product design.
Reliably operating spray nozzles and a flawless spray pattern are indispensable in fluid bed processes. A new spray nozzle safety mechanism from Glatt Ingenieurtechnik, specially developed for products relevant to explosion protection, enables the spray nozzle to be safely dismantled during operation. (article in German language)
Whether it’s infant formula, soups or shakes, instant foods are inseparably linked to many areas of life. If powdery substances are to be dissolved or dispersed in hot or cold liquids, then agglomeration is a vital quality improvement process, with fluidized bed technology providing the widest range of optimization possibilities. For the optimization of instant properties, fluid bed technology is a proven, highly adaptable and established technology. The experimental development of critical parameters is essential and should be tested in laboratory and pilot-scale plants to get flawless instant quality products ready for market.
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