Palm Oil Fractionation Processes

Three palm oil fractionation processes which are in use:

Dry Fractionation: through batch crystallization of oil without using additives by controlled cooling and subsequent continuous filtration.

Solvent Fractionation: through continuous crystallization of the oil in a solvent followed by separation of the liquid and solid fractions through a continuous drum filter. Solvent fractionation, involves the use of hexane or acetone to let the high-melting components crystallize in a very low-viscous organic solvent. This can be helpful with respect to the selectivity of the reaction, but mainly offers advantages in the field of phase separation: much purer solid fractions can be obtained, even with a vacuum filtration. Being a more expensive process, it is less common than dry fractionation and only comes into the picture when a very high added value of (at least one of) the resulting fractions makes up for the high cost. (Related Article: Palm Oil Refinery Plant Cost >>)
Detergent Fractionation: through batch or continuous crystallization of the oil by controlled cooling and separation of the fractions either by gravity or centrifugation after adding a surfactant.

In edible oil processing plant, a dry fractionation process consists of a controlled cooling of the oil, thereby inducing a partial, or‘fractional, crystallization. The remaining liquid (olein) is then separated from the solid fraction (stearin) by means of filtration or centrifugation.

The widespread use of the three oil modification processes – hydrogenation, interesterification and fractionation – extended the range of applications of the triglyceride oils. These processes principally serve the  purpose of modifying the melting properties of oils and  fats in order to improve their functional properties in specific  applications,  but the  processes are  also  used to improve  the  stability  of the oils and fats thus processed.

Natural oils and fats have different characteristics due to the fact that they are composed of a great number of different triglycerides. These contain fatty acids with carbon chins of different lengths and with different degrees of unsaturation.

Triglycerides with a high degree of unsaturation, indicated by a high iodine value, have a lower melting point than those containing more saturated fatty acids. If oil is cooled to a certain temperature, the high melting triglyceride (Stearin) will crystallize while the low melting ones will remain fluid. The stearin can then be separated from oil (Olein) by different methods and the fat/oil is thus divided into two fractions: Stearin with a high melting point and olein with a low cloud and melting points.

If you are interested in Palm Oil Processing Machine, including palm oil extraction, palm oil refinery and fractionation, palm kernel oil processing and all the technology about palm oil production, please send to for professional technical suggestion!

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Cotton Seed Processing Plants

We offer cottonseed processing plants which includes several stages of processing like delinting, dehulling, hullbeating, meats recovery, cooking and conditioning etc.The cooked meats are subjected to oil recovery by expellers. The residual oil contained in the Expeller Cake is recovered through solvent extraction process. The oil so obtained is refined to obtain edible cottonseed oil. All these processes are seamlessly integrated for smooth operations. The lint obtained as a byproduct is further subjected to ginning into bales for sale. (Related Post: Cottonseed Oil Mill Project Cost >>)
Cottonseed Process
Our cottonseed oil machines are lined with FRP for better corrosion resistance and provide major advantages of high dehull rate and high production capacity. These machines have made the process of obtaining clean cottonseed after de-linting completely eco-friendly, with minimum power consumption.


  •     Sturdy construction
  •     High shell removal rate
  •     Less power consumption
  •     Simple operation
  •     Continuous operation for improved productivity and consistent product quality
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Vegetable Oil Refining

Vegetable oil refining is a process to transform vegetable oil into fuel by hydrocracking or hydrogenation. Hydrocracking breaks big molecules into smaller ones using hydrogen while hydrogenation adds hydrogen to molecules. These methods can be used for production of edible oil,gasoline, diesel, and propane.
Vegetable Oil Refining
Vegetable Oil Refining Benefits:

  • Improve Vegetable and Edible Oil Quality
  • Reduce Bleaching Clay Usage
  • Conserve Nickel Catalyst
  • Continuous Process Control
  • Eliminate Human Interpretation Errors
  • Exact Dosage of Used Supplements
  • Timely Intervention at Process Changes
  • Reduced Product Loss
  • Higher Product Yield

Bleaching and Filtration
High-activity clay is added into oil, mix and heat mixture of oil and clay to make the small particle of pigment absorbed on the crystal of clay. This machine is of perfect mechanism, reliable performance and is well a configured piece of equipment.The filtration is a key process step in the edible/vegetable oil industry,Crude oil filtration for removal of foots, safety filtration to improve filtrate quality and/or to protect.

Hydrogenation of oils is done to give the finished oil a higher melting temperature and better oxidation stability, improving the product’s resistance to spoilage. Generally, nickel-based catalysts are used in this process. Once the hydrogenation is complete, the nickel catalysts must be filtered off. Filtering off the catalyst can be controlled, thus reducing the loss of nickel catalyst and optimizing the filtration process while ensuring final product quality.

Vegetable Oil Refining Summary
Using KMEC vegetable oil refining throughout the vegetable and edible oil processing minimizes sampling and timely lab testing, while recording measurements inline and in real-time. Operating costs are greatly reduced due to reduced losses, downtime, and reworking. KMEC machines can improve filtration throughput, reduce re-circulation time and reduce usage of filtration agents like bleaching clay and nickel catalyst.

We are always committed to provide the professional and advanced vegatble oil refining that are suitable for all kinds of oilseeds and for refining all kind of vegetable oils. Don’t hesitate to contact us in the following form to learn more about our vegetable oil refining plant!

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Main Risks of Oil Processing

In many cases the crude extracted oil is not suitable for human consumption until it has been refined to remove undesirable free fatty acids that taste rancid, dark colours and waxes. Refining involves considerable extra equipment costs. The most suitable oils for small and medium scale extraction are those that need little or no refining eg. mustard, sesame, groundnut, sunflower, palm and palm kernel .

Oil Neutralization
There are some main risks that need to be considered are:

  • Marketing

edible oil In general more profit will be made if the cooking oil is packed into retail size bottles. In many countries glass or plastic bottles are difficult to obtain and need to be purchased in large quantities so tying up capital. The possibility of using second-hand bottles should be examined as well as selling in drums to local stores. A survey need to be carried out to make sure that the packaging used meets the demands of customers. (eg size of pack, type of container)
The viability of any oil extraction enterprise depends to a considerable extent on the sale of the oil cake for use in animal feeds and other sub-products. Markets for oil cake must be investigated and demand established before processing starts.

  • Health and safety

As oil processing is classified as a food processing enterprise it will be subject to local legislation. Care should be taken that standards are understood and met. The particular problem of aflatoxins will require attention. Aflatoxins are natural poisons produced by certain moulds that grow on seeds and nuts. They are of considerable concern to oil seed processors and groundnuts are particularly susceptible to contamination. The growth of aflatoxin producing moulds can be prevented by correct drying and by preventing moisture pickup by raw materials in store. It is most important that those considering establishing an edible oil enterprise should be able to recognise aflatoxin producing moulds and understand how to correctly select and store raw materials. If aflatoxin is present very little passes to the extracted oil, the majority will be found in the cake remaining after extraction. Aflatoxin contaminated cake presents a real danger if incorporated in livestock feeds. As aflatoxin is difficult to remove good practice is essential to prevent any mould growth and so prevent problems.

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Palm Oil

Naturally red in color, palm oil is derived from the pulp of the fruit of the palm tree. The palm oil is an inexpensive oil that is commonly used in Southeast Asian and African cooking and is high in saturated fats. Because of its high level of stability and low production cost, demand in the United States has nearly tripled in the last 5 years. In response to its increasing production, many environmental activists have called for the stop of its production, claiming that it is highly polluting the immediate environment of its production site and endangers indigenous cultures.

Cooking with Palm Oil Traditional Cooking

Red palm oil comes from the African oil palm, which is believed to yield the highest amount of oil compared to other trees. It contains a very high level of a substance called beta-carotene, which gives it its dark orange to reddish hue, and is believed to be able to lower the risk of cancer and heart disease. In traditional cooking, palm oil is used in heavy soups and stews, cooking meat and also sautéing vegetables. Typical recipes include groundnut stew, stuffed crabs and beef & spinach stew.

Palm Oil as Biodiesel

Aside from its widespread use in food and as a cooking oil, palm oil is currently being refined for use as a biofuel. Early studies have concluded that it is a clean burning, efficient fuel that is ideal for use in diesel engines. Engines running on biodiesel made of palm oil run smoothly and spits out less polluting emissions than those running on petroleum based fuels. Furthermore, palm oil is biodegradable, and disappears within three weeks.

One of the determining factors of whether or not palm oil will succeed as a biofuel is cost efficiency. When compared to other oils used in biofuels, palm oil is seems a viable choice due to its high level of cultivation and low cost. However, there is still strong opposition from environmentalists for its use as biofuel. The net effect of replacing fossil fuels with palm oil is questionable as the pollution caused by the cultivation and extraction process of the palm oil is comparable to the pollution caused by fossil fuels.

Health Benefits of Palm Oilpalm oil.jpg

The nutritional profile of palm oil is very unique, mainly because of its incredibly high concentration of beta-carotene. The palm oil contains the highest amount of beta-carotene compared to other naturally occurring substances. The beta-carotenes in palm oil are an excellent source of Vitamin A. Vitamin A is a vitamin that is commonly associated with retinal health, assisting in the absorption of light by the eyes and preventing skin diseases. In conjunction with Vitamin A, palm oil is also very high in Vitamin E, another vitamin that has proven healing and regenerative properties.

Although the proven health benefits of the palm oil are abundant, some people advise against it due to its high level of saturated fats. The saturated fats can raise bad cholesterol levels. This consequently causes arteries to clog up, which in turn increases the risk of having a heart attacks or stroke. Therefore, it is more suitable for consumption for young, active people as it gets burned out quickly. Older people who are more prone to heart diseases should consume more cardio-friendly oils such as the olive oil.

Environmental Concerns

Even though it has traditionally been used in Africa, Southeast Asia and parts of Brazil, the emerging popularity of palm oil has raised some red flags among environmental groups. In addition to being used as cooking oil, palm oil has found its way into cosmetics, food products, lotions and many other consumer goods. As with many other crops, its commoditization has led to massive growing and harvesting operations that many believe have harmful, irreversible effects on the environment and ecosystem.

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KMEC Offers the Best Sunflower Oil Machinery Manufacturer to Invest In

Located in china, Henan Province the KMEC (Kingman M&E Complete Plant Co) limited is ISO9001 licensed company. It has a strategic location in the highly industrialized area which ensures effective transportation of its products. It is a company with a rich experience of a decade with 400 plus oil lines evenly distributed in the world. This provides a chance to outsiders to access their products regardless of their physical location. The company has products such as the screw oil press machines, solvent extract plants, oil-milling plants among others. (Read More: Tanzania Sunflower Oil Making Machine >>)

Sunflower Oil Production LineWhen purchasing sunflower oil processing equipment products from the KMEC Company, one is guaranteed to get the best of quality. The sunflower oil will not be compromised as the existing machines have different crushing competence. One can get the high oleic sunflower oil or the mid oleic linoleic oil using the required machine specialized for the preferred oil expression.

KMEC is the best sunflower oil machinery manufacturer as it has sophisticated equipment that gives quality sunflower oil with original taste and aroma after milling in Sunflower Oil Production Line. The machines are also made to use minimum energy for the sunflower oil creation. Also advantageous is the stainless steel machines that ensure long life span of the sunflower oil machines. The prices of the machines are affordable to many and more advantageous due to the less expenditure used on the maintenance.
Sunflower Oil
The customer care service of the KMEC sunflower oil machinery company is excellent. Their contacts are available online and sales people are always on standby to respond to any mail from customers. Delivery of the products that one purchases from the company is prompt. For the commercial sunflower oil machinery, KMEC will send engineers to do the initial installation.

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What You Should Know About the Palm Oil Mill

Palm oil is oil that is safe for human use; its extraction is from a reddish pulp of oil palm fruit. The main type of oil palm whose oil undergoes extraction is African, the American oil palm too works but to a relatively lesser extent.

The oil is distinctly reddish in its natural color majorly because of the existence of beta-carotene. However, it is easy to confuse palm oil for palm kernel oil, which comes from the same fruit. The two, palm oil and palm kernel oil can as well confuse a careless observer because they resemble coconut oil, which comes from the kernel of the coconut palm. The differences are largely in color, palm oil contains beta-carotene, which makes it red, and the other two lack it.

Palm Oil MillA palm oil mill has two major parts or departments, which perform their respective tasks. There is the part that presses oil out of the fruit, which is the oil press. The second department processes the oil; it takes the name, oil-processing machine, both the departments are under one department or machine that has a name of palm oil milling machine.

It is however so important to note that the palm oil milling machines are in categories depending on their efficiency, durability,  type of still used, capacity and how they operate. It would be better to consider stainless steel mills as such will last long and will be easy to maintain. They do not rust. The efficiency of the oil mill should be forty percent and above, it should not be too complicated to use and must be high yielding.

Some palm oil mills are integrated, that is to say that they can press and process oil from seeds or fruits of other plants. They can make soybean oil and oils from other plants, some of them are automatic too, they almost require no manual work.

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Solvent extraction method in an oil milling plant

The oil milling process involves a variety of steps that take place within an oil processing plant which eventually produce edible or crude oil. One of the most important steps in the processing of oil is the solvent extraction stage which involves the removal of majority of the oil within the seed. The solvent extraction method for a different seeds varies but the final objective is for most of the oil to be removed and used for its intended purpose. Some seeds that have to go through the solvent extraction method must be prepared beforehand while  for others whose oil content is high, the pre-pressing cakes are used. The solvents that are used in this process are usually a byproduct of petroleum, mainly hexane which is the one commonly used.

Solvent extraction plantSince solvent extraction is an important step in the production of oil, there is a general method that has been adopted by oil milling plants to ensure that the oil is completely removed. However, this solvent extraction method may be customized depending on the needs of the milling plant and their desired output.

The first step in the solvent extraction method involves the preparation of the seeds such as pre-pressing for seeds that have high oil content. The next step is extracting oil from the seeds that have been prepared by using a solvent that has passed the food grade test.  When the seeds have most of the oil removed from them, the next step is desolventising which involves cooling as well as drying of the seeds. When this is done, the oil has to be distilled to eliminate the solvent that was used in the extraction process. Lastly, the solvent can be recovered to be used in the extraction for as many times as it is needed.

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Methods of coconut oil extraction

Coconut OilCoconut oil is one of the edible oils that is used in cooking and making of cosmetic products among others. The oil found in coconut is extracted using a number of methods depending on the amount of oil that is being sought and even the amount of coconuts available. To extract coconut oil, there is use of the traditional methods and also modern methods which use machinery for the extraction. Furthermore, the coconut oil that is extracted can be further refined as per an individual’s preference especially if a solvent was used. Some of the common methods of coconut oil extraction that are used in homes include:

One of the traditional methods of coconut oil extraction is aqueous processing which involves the separation of the coconut flesh from its shell and boiling it in water. As the coconut flesh cooks, it softens thus allowing the oil to escape and settle on the surface of the water. Once most of the oil settles on top it is skimmed and poured in a separate container.

oil extraction pressMachines have a way of making life easier and this is also evident in the expeller machine that is used in coconut oil extraction. The coconut flesh is placed in a cylindrical barrel where it is pulverized by a rod that is rotating on the inside. The coconut which is heated is quickly broken down making it ready for oil to be extracted. To be able to separate the flesh from the oil, hexane is used. Nevertheless, the oil should be refined to remove any traces of the chemical solvent.
Overall, there are other methods of coconut oil extraction that are available depending on whether it is large or small scale, and may sometimes require machines to help press all the oil to be used for many purposes.

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About Olive Oil Production and the Processes Involved

Olive oil is considered a superfood because of the nutritional content in it, and it also has a light and fresh taste to it. More people are using olive oil as their main oil to cook with but you cannot deep fry in olive oil because this removes the nutrients from the oil. Contrary to popular opinion, Italy is not the largest exporter of olive oil but instead it is Spain that exports the most olive oil. In addition, some manufacturers market Spanish olive oil as if it came from Italy so you want to keep this in mind when purchasing olive oil. Here is how olive oil is produced.

olive oilProduction Process
The grower harvests the olives then he washes them thoroughly while removing the large leaves from them. After this happens the grower crushes the olives until they form a paste, and he uses a mill to crush them. Once this happens the grower can now press the olives because this is how the oil is extracted from the olives. As a result you will get the olive oil that is a favorite among many worldwide, and the oil is ready for production and manufacturing.

Olive oil production is the greatest in the Mediterranean although some of the oil is being produced in California. When you purchase olive oil you want to buy a well-known and trusted brands nut that is also affordable. Gourmet specialty food stores are the best places to purchase olive oil since the owners of these stores often strive to include the most authentic brands of olive oil.

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