Solvent extraction plant is recommended for large palm kernel oil mill with high capacity. However, for small factories of palm kernel oil extraction, screw pressing plant is suggested.
Basic Unit Operations of Solvent Extraction
Palm kernel pre-treatment;
Oil extraction;
Solvent Recovery from oil and meal;
Solvent Extraction Station of Oil Mill Plant
In the old days, all oil mills or factories adopted mechanical extraction method by use of screw press for kernel oil recovery. However, with the improvement and increasing number of bigger mills, solvent extraction is developed and getting more and more popular. At present, the following three types of extraction processes are wildly applied to vegetable and kernel oil processing plant.
Mechanical oil extraction utilizes high pressure oil expeller (screw press);
Direct solvent extraction by use of oil extractor;
Prepressing followed by solvent extraction;
The raw materials for palm kernel oil extraction are generally unbroken nut (kernel with shell). In pre-treatment process, the whole nuts are cracked. Then, the kernels are separated from the shells or hulls. For better extraction and manufacture premium palm kernel oil, fibre, shell and other unwanted materials are also removed in this process.
Why Choose Solvent Extraction Plant for Palm Kernel Oil Manufacturing?
Why palm kernel oil solvent extraction plant? Squeeze the oil out mechanically by use of screw oil mill (screw press) is the early means of seeds and nuts oil extraction. However, solvent extraction plant is ideal choice for large scale oil mill plant. The following is the main advantages of solvent extraction machine and plant:
Fit for mass production of kernel oil extraction;
High oil extraction rate, low oil residual in meal and high quality of meal;
Less horse power and low consumption;
Less maintenance;
Efficient and Reliable;
QI’E Group is a professional and reliable manufacturer focused on supplying premium solvent extraction machine and turnkey palm oil and palm kernel oil extraction plant. Low Cost and High Performance! Feel free to inquiry about the details and project cost of our machines and complete oil mill plant. We are always at your service!
Screw oil pressing plant is suitable for both small and large palm kernel oil extraction plant. Screw oil pressing is a kind of mechanical oil extraction process which mainly includes:
The following the three different processes of palm kernle oil extraction plant.
There are three variations of mechanical kernel oil extracting procedure: direct screw pressing, partial pretreatment and complete pretreatment.
Direct screw-pressing: Some small palm kernel oil mills is designed without any pre-treatment machines. The kernel is fed directly into the oil presses, crushed and compressed at the same time in the oil pressing machine. Double pressing is suggested to achieve higher oil extraction rate. Direct screw-pressing is suitable for small scale oil mill with capacity less than 10 tonnes per day.
Partial pre-treatment: The kernels are crushed to small fragments before oil expelling. Cooking is also carried out in some cases.
Complete pre-treatment: The full pre-treatment processes including cleaning, crushing, flaking and cooking are carried out before oil pressing. Large oil mill plant with capacities between 50 ~ 500 tonnes per day choose this kind of kernel oil processing procedure. Palm kernel oil combined with fresh palm oil mill plant adopts complete pretreatment procedure.
Kernel Pre-treatment Section
The pretreatment section greatly affect the oil extraction efficiency and production cost. Before feeding into oil expeller (oil press), the palm kernels must be cleaning to remove impurities, otherwise they may damage the expeller, increase maintenance costs and reduce the quality of final oil product.
Magnetic separator is used to remove metal debris;
Vibrating screen is used to remove stones and sand;
Break roller or winging hammer grinder is used to break the palm kernels into small pieces.
Flaking machine is used to pressing the kernel fragments into flakes (0.25 to 0.4 mm thick).
Cooker is used to adjust the moisture content of the palm kernel flakers to optimum level through steam conditioning. Besides, cooking process can also help reducing viscosity of oil, rupturing cell walls, coagulating the protein and facilitating separation of oil from protein materials. In the palm kernel oil pressing process, the meals are generally cooked to a moisture content of 3 % at 104-110°C.
Screw-pressing Section
Oil expeller or screw press is the standard oil processing machine in the modern oil milling industry worldwide.
After properly pretreatment, the meal is then fed into palm kernel oil press (screw press), which is mainly composed of a revolving worm and a stationary perforated cylinder called barrel or cage. With the worm revolving, the meal is forced through the cage. The volume axially displaced by the worm diminishes from the feeding end to the discharge end, thus compressing the meal as it passes through the barrel. While the palm kernel expeller or cake is discharged from an annular orifice, the expelled oil will flow out from the barrel of screw oil press. For cold oil pressing process, a circulating water system is added to cool the worm-shaft and manufacturer high quality cold pressing oil product.
Oil Clarification Section
The expelled oil discharged from the palm kernel oil press is then drained to a reservoir. The crude palm kernel oil inevitably contains unwanted impurities and foots, which must be removed to produce clear oil prior to storage.
Revolving coarse screen or decanter is used to remove large solid impurities;
Filter press is used to remove the remaining solids and fines;
Turnkey palm kernel oil processing and extracting plant design and construction service. Supply palm kernel oil pressing machine including screw oil presses, with competitive price and great after service! Feel free to contact us if you are interested to know the latest price of our oil processing machines!
Palm kernel is an important kind of by-product from palm oil extraction plant. About 45%~48% of palm nut is kernel. The kernels contain about 47%~50% by weight of oil. Palm kernel oil is quite different from palm oil in both characteristics and properties. However, it is more similar to coconut oil.
Full pressing, solvent extraction and pre-pressing solvent extraction is the three main oil extraction methods of palm kernel.
Mechanical Oil Extraction Plant (full pressing)
Basic Section
Palm Kernel Crushing
Cooking
Oil Pressing (expelling)
Oil Filtering (crude palm kernel oil)
Full pressing extraction is also called single pressing, which is a physical extraction method that squeezing oil out under high pressure by use of mechanical screw oil press. The typical process of screw oil pressing plant is: palm kernel crushing, flaking, steam conditioning, mechanical oil expelling and oil filtering. Production cost depends mainly on mechanical wear and tear, electricity and maintenance expenses. Below is some of our Palm Kernel Oil Pressing projects.
Small Oil Mill Plant
Large Oil Mill Plant
Full pressing method is suitable for both small and large palm kernel oil mill plant, while solvent extraction method is generally applied to large scale oil mill plant. If you are planning to start palm kernel oil extract business, ensure your capital investment and your daily capacity before deciding the oil production process.
Palm Kernel Solvent Extraction Plant
Basic Section
Crushing
Solvent Extraction
Separating the solvent from miscella
Separating solvent from wet meal
Recycling of solvent
Solvent extraction plant separate the oil by mixing solvent in the material. Production cost depends mainly on solvent loss and energy used in solvent recovery. Compared with screw pressing, the oil recovery of solvent extraction plant is more complete.
Pre-pressing & Solvent Extraction Plant
Pre-pressing & solvent extraction is another popular palm kernel oil production method.
After oil pressing or extracting, the oil then requires clarification in a filter press or by sedimentation. To ensure premium quality of final oil and by-products, palm oil mill should have strict quality control from fresh palm bunch processing to kernel oil extraction. Build palm kernel oil extraction plant with professional oil production process is the very first step to the success of your business. QI’E Group offer turnkey palm oil mill plant solutions from design, manufacture to installation, with competitive price.
Palm Kernel Oil Extraction
Generally, palm kernel extraction is separated from palm oil extraction. Most small and medium palm oil mills are not designed with palm kernel processing unit, but selling the kernel to other oilseeds extraction plant (such as copra, shea nuts, cottonseeds, coconut seeds, rapeseed, groundnuts and so on).
Palm kernel production in increasing steadily over the years. Both full press extraction and solvent extraction is available for palm kernel oil extraction plant.
How is palm kernel oil extracted?
The traditional oil extraction method is to fry palm kernels in old oil or simply heat the dried nuts. The fried kernels are then pounded or ground to a paste in a motorised grinder. The paste is mixed with a small quantity of water and heated to release the palm kernel oil.
What is the process of palm oil extraction?
The first step in the palm oil production process is harvesting the palm fruit. Harvested bunches are transported to factories where they are first sterilised and then threshed. Once separated from the bunch, the fruits go through a digester, to then be mechanically pressed in order to extract oil from the pulp.
How are palm kernels harvested?
The fruit is harvested using a long sickle. After harvesting, the FFBs are collected and loaded onto a truck to be transported to one of GAR’s palm oil mills. Each of the thousand or so fruits within the bunch is made up of a hard seed (the kernel) surrounded by the flesh of the fruit (mesocarp).
What is the difference between palm oil and palm kernel oil?
Palm oil is extracted from the flesh or pulp of the fruit (the outer part) while palm kernel oil is extracted from the soft part of the seed (the inner part). Although both oils originate from the same fruit, palm oil is chemically and nutritionally different from palm kernel oil.
Where does palm kernel oil come from?
Palm kernel oil is an edible plant oil derived from the kernel of the oil palm tree Elaeis guineensis. It is related to two other edible oils: palm oil, extracted from the fruit pulp of the oil palm, and coconut oil, extracted from the kernel of the coconut.
Is palm kernel oil sustainable?
Palm oil can be produced sustainably – but a lot of it isn’t. Palm oil is great for big food and cosmetics companies, because it’s cheap and versatile.
How to produce palm kernel oil?
How to Make Palm Kernel Oil?
1.First, collect and clean the palm kernels. Palm kernels should be cleaned by some cleaning equipment or by hand only. …
2.Second, crush the palm kernel. …
3.Third, separating kernel and nut shell. …
4.Fourth, pressing palm kernels. … Finally, the pure palm kernel oil is refined and obtained.
What is the difference between palm nut and palm kernel?
The solid part obtained after pressing is known as palm nut. The palm nut is then processed by grinding and removing the outer shell to obtain the palm kernel. This palm kernel can be further processed to extract palm kernel oil.
How do you remove palm kernels?
To separate the palm kernels from shells, we need use palm kernel cracking and separating machine. The palm kernel cracking and separating machine system includes magnetic separator, cracker, wind separator, cyclone dust collector, centrifugal fan and three bucket elevators.
How many types of palm kernel oil do we have?
There are two types of oil obtained from the fruit: oil from the flesh of the fruit and oil from the kernel inside the nut (palm kernel oil). The latter is primarily used for the oleochemical industry, although it does have some food applications.
What country produces the most palm kernel oil?
According to data from the United States Department of Agriculture, nearly 85% of palm oil is produced in just two countries – Indonesia and Malaysia. In 2019, Indonesia produced 42.5 million tons, 58% of global production, while 19 million tons came from Malaysia – 26% of the global supply.
Which industry uses palm kernels?
Both palm kernel oil and palm oil are mainly used in the kitchen. Palm oil is used by the food industry to produce margarine, sauces, baked goods, confectionery, potato and chocolate products. It is also used for frying, cooking and deep-frying, especially in Asia and Africa.
