The Siberian-Mongolian peoples already knew how to use the basic principles of freeze-drying for the preservation of meat. Even today, freeze-drying is used on a large scale in the food industry. Filtration Group Industrial’s customer produces freeze-dried products for industrial applications. These are used in breakfast cereals or cereal bars. Freeze drying, also called “individually quick frozen” IQF, is one of the best and most effective methods to preserve food products. The products are processed only a few hours after harvesting. This guarantees maximum freshness. Vitamins, minerals and fiber are preserved in the frozen products, as well as flavor and color. Freeze-drying is based on sublimation, i.e. the direct phase transition of a substance from the solid to the gaseous state without passing through the liquid state. Following freeze-drying, the product is again mixed and refined. This produces dusts that have to be extracted. The dusts are generated at the collection hopper, at the transition of the conveyor belts, and after the mixing drum. Filtration Group Industrial uses an SFR-09 006 DN-130 S1S S1SO dust collector for this application.
Freeze-drying works according to the principle of sublimation: selected, freshly harvested raw materials are gently extracted from the water bound as ice after freezing. The freeze-dried product is fed into a mixing drum on the ground floor by a collecting container on the first floor via a downpipe. There, the product is mixed and subsequently fed to the packaging by various conveyor belts.The dust gets stuck together during transport. By feeding in filter aids, the dust becomes free-flowing again. When filling into the collecting container, at the transfer points and after mixing drum, very fine dust is produced with must be extracted.
Technical data
Filtration Group Industrial has chosen a SFR-09 006 DN-130 S1S S1SO round dust collector for this application.
Conical filter elements were used
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