Oil & Fats Refining - Winterizing
Winterizing
Fats and oils are marketed with a cold stability temperature determined by a cold test. To comply with such standard, certain vegetable oils require a winterizing process consisting in precipitating as crystals, under programmed conditions of temperature and time, the saturated glycerides or waxes, which cause them to become cloudy. The processes normally used are: As an alternative to winterizing combined with neutralizing, CM BERNARDINI has developed a winterizing system that allows to process almost any type of oil according to the most suitable cooling curve and under the most favorable conditions of temperature , time and agitation. The latter factors are of primary importance for the formation and nature of the crystals According to the types of filters installed , filter aid can be used or avoided. Fully automatic filters are provided for the removal of the solid phase from the crystallized mass.
Dry Fraction (Palm Oil)
The main features of C.M. BERNARDINI dry system are:
- Possibility of carrying out single or double fractionation without making any modification to the plant and to obtain different kinds of oleine at a different cloud point;
- Possibility of obtaining qualities of stearine with a different iodine value and melting point ;
- Use of special crystallizers having very high specific surfaces;
- Continuous automatic control of the temperature over the oil crystallization curve, controlling at the same time also the cooling water temperature. This allows to maintain always the same reduced temperature difference between oil and cooling water in order to get the proper crystals growth.
C.M. BERNARDINI dry fractionation plant can be supplied with a membrane or vacuum rotary filter. A PLC-based control system is provided for the overall process supervision.
