Jatropha Seed Oil Making Process
Oil extraction is a traditional oil production method. With the advancement of oil extraction technology, there have been three types of oil extraction: manual soil extraction, hydraulic extraction, and screw extraction. The most widely used oil pressing machinery today is the screw oil pressing machine, which uses the more advanced continuous pressing oil extraction equipment. The screw press is suitable for pressing a variety of oil crops, such as rapeseed, soybean, cottonseed kernel and rice bran, etc. In particular, the oil extraction of some oil plants that need to maintain their original natural flavor or performance characteristics, such as camellia seeds, sesame seeds, cocoa beans and castor seeds, etc., also use a screw oil press.
The process of oil extraction is to process the prepared clinker billets. Under higher pressure conditions, the oil contained in it is continuously squeezed out, and the material embryo is squeezed into a cake. When extracting oil, the index reflecting the effect of oil is called oil output efficiency, which refers to the percentage of the oil extracted to the total oil content in the oil.
In the process of pressing and pressing, the relevant parameters, conditions and indicators must be mastered and controlled. It includes: the pressing conditions and their properties of the material, the pressure in the pressing chamber, the pressing time, the thickness of the material cake, the temperature conditions during pressing, etc.
To prepare a suitable pressing material-clinker, in the pressing process, it must be able to withstand greater pressure and squeeze out all the oil, but it is also required to form cakes without loosening. This requires reasonable coordination and control of the moisture and temperature of the blanks with different characteristics during pressing. The usual practice is: a combination of high temperature and low moisture and low temperature and high moisture. However, in order to minimize the residual oil rate of the cake, it is necessary to keep the pressed material reasonably low in moisture and at a high temperature during pressing.
For each variety of oil, the pressed material has a reasonable moisture content, that is, "optimal moisture". Accordingly, it also requires that the oil temperature cannot exceed a certain maximum temperature, usually 130~140 ℃.
Process flow chart: Jatropha seeds - cleaning - softening - rolling - steaming - frying - pressing - filtering - crude oil
