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July 21, 2014
GEA Wiegand: New orders from the gelatine industry
GEA Wiegand GmbH and GEA Filtration (Ettlingen, Germany; www.gea-wiegand.com) have received an order for a revamp of an old evaporator and for a new direct-steam sterilization unit of a German gelatin manufacturer.
After the commissioning phase of the evaporation plant, the customer will replace the existing ion-exchange unit and install an ultrafiltration system with a diafiltration unit for the desalination of the gelatin solution. Moreover, process water streams occurring in several production steps in the factory will be treated and recovered in a reverse osmosis system.
Another order was placed, by a Turkish company in the gelatin industry, for a complete GEA Wiegand gelatin-concentration line, consisting of ultrafiltration, evaporation and sterilization operations. This plant is controlled via a PCS7-system.
Gelatine and glue are high-quality natural products with a wide range of applications in the food, nutriceutical, pharmaceutical and photography industries. Concentrated glue broths are mainly used in the adhesives industry.
Gelatine is extracted from leather waste, veal, bovine, and porcine hides, bones, and fish skins. The raw materials are chemically treated in the extraction. The cross-connections between the chain molecules in the collagen protein of the raw materials are split using acids or caustic solutions. The high-molecular-weight collagen fragments are then extracted with warm water as glue or gelatine. Depending on the treatment process, this takes place in several steps at different pH values and temperatures. The extractions are subsequently clarified, desalinated, concentrated, and, if necessary, sterilized, dried and packed. GEA Wiegand delivers membrane filtration plants (GEA Filtration) and evaporation plants for the process steps of clarification, desalination, concentration and sterilization.