Decanters for fats and oils
Vegetable oils and fats
Clarification of pressed oil (CPO)
Oil running from the upstream press contains a large amount of solids. Most of these solids may be removed in decanters by centrifugal force. Hot water is, however, frequently added to the oil to facilitate the removal of solids. The hot water causes the fine solids to swell, which makes them much easier to remove.
Animal oils and fats
Raw fats
Once the raw fats have run through the mincer and melting tube, three-phase decanters may be employed to pre-clean/separate them into fat, glue water and solids.
Secondary products
In animal rendering plants centrifugal separating technologies may be employed in the production of animal fat (for the chemicals and pharmaceuticals industries) and in the production of meat meal. Decanters may be used for pre-clarification of the sterilized fat (dry rendering) and for separating heated fats (wet rendering) into glue water, solids and fat before further polishing by separators.
Gelatine
Centrifugal separating technology may be used in the production of gelatine from bones, skin and pork rinds. Decanters may be used here for separating the extraction residues.
Blood meal
Once the fresh blood has been heated and coagulated, decanting processes with subsequent drying may be used to produce blood meal.
Fish meal
Separators and decanters may also be used in the production of fish oil and fish meal. Following the boiling and pressing processes, decanters may be employed to clarify press water, i.e. solid-liquid separation, and three-phase decanters may be used to realize solid-liquid-liquid separation. The separated solids may then be dried and processed into fish meal. Separators may be used to recover fish oil from the oily liquid phase.
Fish-protein hydrolyzate
Three-phase decanters may also be used after crushing and enzymatic decomposition to achieve separation into solids (-> fish meal), into the oil phases (->fish oil) and watery
Protein hydrolyzate
Three-phase decanters may also be used after crushing and enzymatic decomposition to achieve separation into solids, into the oil phases and watery protein-containing phases. The two liquid phases may then be polished in separators.
Bio-diesel
Various separating tasks must be fulfilled during the transesterification of vegetable oils in the production of bio-diesel; these tasks may be carried out with the help of centrifugal separating technologies. For instance, decanters may be used in the fat-washing, FFA-recycling and salt-washing processes.
