Palm oil refinery plant/palm oil fractionation and crystallization process
Palm Oil is largely produced in equatorial belt, with Malaysia and Indonesia being the leading producers. Crude Palm Oil is dark in color and to make it edible it has to be refined. The Henan Doing Company Palm Oil Refinery Plant is best suitable to refine the palm oil. Our palm oil refinery plant refines the crude red palm oil and transforms it into edible refined transparent oil. The series of refining processes are conducted in our palm oil refinery plant. At every stage of refining, the palm oil changes its state and improves its quality.
We can supply and export the complete palm oil refinery plant with capacities ranging from 5 ton per day to 500 tons per day.
Palm oil refinery plant
Crude Palm Oil (CPO) Standard Specifications:
FFA ( as of Palmatic): 8% Maximum
Moisture & Impurities: 0.25% Maximum
Iodine Value: 56 Minimum
Melting Point: 36 - 50 deg. Maximum
DOBI: 2.31 Minimum
Cloud point: 3.5R 3.5Y
Process for Palm Oil Refinery Plant
Apart from all the regular refining procedures, there are two main additional processes that need to be carried out for refining crude palm oil:
For crude palm oil refinery plant, fractionation process is required in which palm olein and palm stearin are separated by scientifically cooling the refined palm oil by chilling plant and then filtering the oil. For this purpose crystallizing vessel is used in which chilling pipe coils cool the oil for fractionation. Palm stearin crystals are formed due to chilling which are separated in the filter press and pure liquid of palm olein is obtained and palm stearin cake is retained in the filter press.
Palm oil fractionation plant
Palm oil fractionation process is used to separate the palm olein and palm stearin from the RBDPO (Refined, Bleached, Deodorized Palm oil) produced by physical /chemical treatment. The RBDPO is further passed through the fractionation process to get various grade of palm olein and palm stearin. Usually, there are three types of olein are produced:
(1) Normal grade olein,
(2) Super grade olein
(3) Olein with cloud point 7 – 8°C.
Firstly, the RBDPO feed must pass the quality specification, colour <2.6R and FFA < 0.075 is fed into the heat exchanger. The RBDPO feed is heated up by hot waters around 75°C.
After that the oil is kept homogenized at about 70°C in homogenizes before the start of crystallization. The idea is to destroy any crystals present and to induce
crystallization in a controlled manner in the crystallizer.
After that, the oil is pumped to the crystallizer. The crystallization system is a batch type and is equipped with special crystallizer operating batch wise. This crystallizer is made up of vertical cylindrical vessel full of thermo-regulated water which submerged barrels containing the oil to be fractionated: each of these barrels is fitted with a mechanical agitator. An automatic station controls the temperature in the crystallizer.
The crystallization process is carried out to remove the higher melting glycerides which cause liquid oils to become cloudy and more viscous at low temperature. There are 3 factors (temperature, time and agitation), have a fundamental importance on the formation and character of the crystal:
The lowering of temperature causes, because of supersaturating the higher melting component to separate from a solution.
Agitation facilitates the formation of small crystals.
Time with a gradual decrease in temperature and stillness, promotes the formation of longer crystals.
The solution is pumped batch-wise into the crystallizer according to a pre-established programme. In the crystallizer, the crystal formation and growth occurs as the oil is agitated and cooled sing chilled water and cool water filled in the jackets or cooling coils of the crystallizer. Cooling can be governed by controlling either the oil or water temperature.
Final Filtration Process:
After the crystallization process, the slurry from buffer tank passes through (Screw pump) the filtration process for the physical separation between RBD palm stearin and RBD palm olein. Presently, the membrane filter is used for this filtration. Another alternative for this purpose is by employing plate & frame type filter press with plates/frames made up of virgin polypropylene, this filter press provided with hydraulic closing device.
The membrane filter is pressure filter where the filter pack comprising alternatively plates and frames, or a series of chamber is compressed between one fixed and one movable cover or bulk-head. The filter media are located between each individual element. Cake will build up in the hollow space between the elements and fall out of the press when the filter pack is opened. Composition of the filter pack is by means of electrically driven hydraulic system (75 bar), which controls the entire mechanical parts of units, head plates, filter plates, plate shifting device with the built in panel board.
Thermic Fluid Heater, Steam boiler, Vacuum Pump, Steam jet ejector / booster, Barometric Condenser & Tower, Catchalls, Cooling tower, Water softening plant, Steam Generator, Soap pan,2 –Control Panels, Oil tanks (Raw, Bleached & Refined) etc. play their role in the refining process. So these equipments are part of the refinery and connected with the vessels through pipelines. All of these equipments are fitted accordingly at their respective place in the steel structure, which is supplied by us. We go for installation and commissioning of complete edible oil refinery plant.
We supply and export Palm Oil Refinery Plants along with its various equipments and technology to ensure that best finished palm oil is achieved with the lowest production cost.