Semra BOZKURT, Özgül ALTAY, Mehmet KOÇ, Figen ERTEKİN

Toz Gıda Proseslerinde Akışkan Yatak Uygulamaları

Akışkan yatak sistemi, ağır sanayiden, eczacılık, kimya ve gıda sanayisine kadar geniş kullanım alanı bulmaktadır. Bu sistemde küçük katı parçacıklar hava ile temas ettirilir ve hareketleri sağlanarak yatak içerisinde askıda tutulmaları sağlanır. Yatak içerisinde akışkanlaşmanın başladığı andaki hız olarak tanımlanan minimum akışkanlaşma hızı, akışkan yatak sistemlerin en önemli tasarım ve işletme parametresidir. Toz gıdalarda akışkan yatak, kurutma, aglomerasyon, granülasyon ve kaplama proseslerinde yaygın olarak kullanılmaktadır. Akışkan yatak teknolojisinde birçok olay eş zamanlı olarak gerçekleştiğinden sistem üzerine etki eden çok sayıda değişken mevcuttur. Bu derlemede, akışkan yatak, toz gıda proseslerinde akışkan yatak uygulamaları ve akışkan yatak sisteminin kullanılması sırasında dikkat edilmesi gereken parametreler hakkında bilgi sunulmaktadır.

Fluidized Bed Applications in Powder Food Processes

Fluidized bed system has a wide range of use from heavy industry to pharmaceutical, chemical and food industry. In this system, a bed of solid particles is transformed into afluid-like state through suspension in a fluid. The minimum fluidization rate, defined as the speed at which the fluidization begins at the bed, is the most important design and operation parameter of the fluidized bed systems. Fluidized bed in powdered foods are widely used for drying, agglomeration, granulation and coating processes. Since many events take place simultaneously in fluidized bed technology, there are many variables acting on the system.In this review, information is given about fluid bed,fluidized bed applications in powder food processes and parameters to be considered during the use of fluidized bed system.

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