Palm oil pressing probably are following process:
1. Raw material storage section
Collected the fresh palm fruit bunch and carried by truck to the unloading station. Freedom to fall fruit cage cart.
2. Sterilizing section
Fresh palm fruit bunch are airtight sterilized in sterilizer for about 60 minutes. The purpose is to prevent enzymes broken down, avoiding FFA content in oil further increase; easy threshing machinery; pretreating peel, prepared for the follow-up processing; pre-conditioning stone, reducing the damage kernel.
3. Threshing section
Oil palm fruit accounts for about 60% of the entire fruit bunches and threshing is to separate the oil palm fruit from the fruit bunches. After the separated oil palm fruit is discharged into the press section.
4. Mashed, press section
Mixing tank will mash and crush palm fruit until broken after fruit threshing. There is also the steam heater in masher. The purpose of mashing is to separate the pulp and nut and crush the palm pulp. At the same time, the steam is used to cook the palm fruit and broke the cell of pulp. Then palm fruit into the continuous screw press.
5. crude oil purification section
After crushing to give crude oil, crude oil after Presses diluted with water after sedimentation, filtration, removing the fiber material from the oil.
This is generally the process of palm oil press.
Conventional oil press about in two ways: hot and cold pressed
Hot-pressed peanut example. Before the hot pressing first crushed peanuts or flaking, and then placed in the steamer for 1.5-2 hours, the temperature reaches 120 degrees, about 3% moisture to the press. When the temperature reached 85 degrees, start a normal press. If there is no steamer peanuts can also be placed in the fried wok, crushed peanuts first, gradually add about 7-8% of the water, peanuts can be pressed when fried to deep yellow.
The difference between palm oil and conventional oil press are overall little. Main press process all has sterilizing section, after once palm oil need precipitation, and filtered to give crude oil, conventional oil after pressing need secondary crushing, squeezing fully out of oil.