Filtration Of Gelatine Solutions

Gelatine solutions are pure protein solutions. They are very complex liquids and need special attention for filtration. Depending on the raw material used (hides, skins or bones) the quality differs widely.  During the process there are usually a number of filtrations required, ranging from coarse to fine and finally to sterile filtration. Depending on the process, the gelatine concentration (50 - 200 bloom) and working temperature, the filtration rates vary widely and range from 80 - 120 - 200 l/m2/h.

The plants must be built to withstand prolonged high processing temperatures of 95°C - 98°C.  During the process a sterilizing and/or bleaching chemical (hydrogen peroxide) may be used (pH 1 - 14) and for this reason all parts, which come into contact with the product, must be of a high quality stainless steel AISI 316L (1.4435) or better.

FILTER-O-MAT® - DE-Filtration

For the filtration of gelatine solutions, excellent results are obtained when using a horizontal pressure leaf filter (FILTER-O-MAT). This filter is available in stainless steel quality 316L and is designed to withstand high temperatures. The filters are available either as manually operated plants or with automatic control systems. 

SYNOX® PF Candle Filter

Precoat Filtration with D.E. (Kieselguhr) candle filters type SYNOX PF have become an established and cost efficient alternative to other filtration methods of gelatine today. These filters are successfully in operation at gelatine factories all over the world. The patented STABOX® Candles and the optimized JET CONTROL™ inlet distributor guarantee an even pre-coat and minimized interphases. The SYNOX PF is designed to be used with alternative filter aids as well.

Sheet Filter

For fine or polishing filtration a sheet filter, may be used.  This filter plant is also available in stainless steel quality 316L and can be designed for almost any flow rate.