It takes mainly 5 steps to press palm fruit to obtain crude palm oil, including sterilization, threshing, digesting, pressing and filtration.
First of all, put the fresh palm fruit bunches in the fruit cage, and put the fruit cage in the sterilization tank with a row crane for sterilization. The function of palm fruit sterilization: on the one hand, it increases the humidity of the fruit, which is beneficial to the separation of the fruit from the fruit bunch. On the other hand, it destroys the activity of the fat-decomposing enzyme and slows down rancidity, so as to prevent the content of free fatty acids (FFA) from increasing, causing the oil molecules to condense on the surface and destroy the interior, the structure is easy to press, and is conducive to the subsequent separation of pulp and core.
Secondly, The sterilized palm fruit bunches are de-fruited in a Drum Type Thresher. Realize fruit drop through physical collision. The obtained palm fruit is transported by auger and bucket elevator into the digesting tank for digester. Digesting the fruit is to better squeeze out the oil. Part of the oil produced during the digesting process will be transported to the temporary storage tank. Then press the digested palm fruit in the palm oil presser. After processing, you will get crude palm oil and mixture of fiber and nut.
The last step is to filter the crude palm oil. The vibrating screen filters large fibers, the clarification tank filters heavy impurities and silt, and the plate filter filters fine fibers and absorbs water. The vacuum drying system separates oil and water, and draining water is conducive to crude oil storage. Store the obtained crude oil in an oil storage tank. We get the crude palm oil.
The vibrating screen is double-layered. The clarification tank has a built-in heating coil. Because the crude palm oil has a low melting point, the heating coil can increase the fluidity of the oil. For clean oil, the vacuum drying system is carried out under vacuum and high temperature.
Here is the whole process flow chart with the machine:
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