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Palm oil is easily digested, absorbed, and promotes health. Palm oil is an important ingredient in fat and has a mild property and is a good material for making food. From the combination of palm
oil, its high solids glycerin content keeps the food stable from hydrogenation and effectively resists oxidation. It is also suitable for the hot climate to become a good condiment for pastry and bakery products. Due to several properties of palm oil, it is very popular among food manufacturing.

We have low environment pollution palm oil milling production line. This palm fruit oil machine adopts process of sterilization, threshing, digesting, pressing, clarification, purification, drying,
depericarper, crushing and final press-ing. This mature design fulfills the lowest fuel consumption, steam driving, and self-sufficient energy supplying.

Quality and performance reliable and stable oil making process. The design, manufacturing, and installation are all ISO quality approval. Our have rich experience in palm oil making machine designs and gets national patent certificates of multiple oil milling production lines.

Oil palm oil production equipment 

The Fresh Fruit Bunches(FFB) is available after 3 yeas plantation. Palm fruits are sent into crude palm oil processing plant with following production process:
(a)Weighing. Transport palm fruit to factory after truck weighing so as to make prompt settlement and production cost subsequent.
(b)Unloading fruit. Fresh Fruit Bunches (FFB) are sent to fermentation tank through transportation machinery after sieving and impurities removing. The time from picking up to fermentation should be less than 24 hours, or the free fatty acid(FFA) will rise, which will not be conductive for further processing and production of palm oil from palm oil making machine.

(c)Sterilization. FFB will pass high pressure and high temperature sterilization after entering fermentation tank. It will soft and make sterilization for FFB.
(d)Threshing. Threshing machine will separate both palm fruits and empty fruit bunches(EFB) after FFB soften during fermentation.
(e)Empty fruit bunches (EFB). EFB are sent to send to garden as fertilizer, fuel or other purposes after
conveying and hoarding.
(f)Meshing. Mixing tank will mesh and crush palm fruit until broken after fruit threshing.
(g)Pressing. The crushed palm fruit will be leaching out from screw extrusion of palm oil pressing machine.
(h)Fiber separation. The extruded fiber pie enters air separation system after crushed to get separation
of fibers and cores.
(i)Separation. Crusher divided fruit core into palm kernel and shell after separated with fiber. Air separation and washing systems separate palm kernels and shells. Shells enters boiler system as fuel, and palm kernels are storage after drying.
(j)Oil clarification. Crude palm oil (CPO) contains moisture and impurities after palm oil pressing. CPO begins primary treatment through sand tank and screen, enters vertical clarification tank to make heating and stirring, and finally separate into waste oil and edible vegetable oil. Edible vegetable oil is sent to crude oil storage tank after drying.
(k)Oil transportation. Oil pipeline transportation will be projected on basis of present situation.
(l)Water treatment. Water source is introduced into plant from river nearby. It will achieve boil feed water standard after primary clarification and filtration, secondary osmosis and reverse osmosis treatment.
(m)Power system. Steam turb generator power generation is the main driving force. It is also equipped with diesel generator sets.

Palm oil is a kind of tropical woody vegetable oil, which is the largest variety of vegetable oil produced, consumed and internationally traded in the world at present. With soybean oil and rapeseed oil, it is also known as “the three major vegetable oils in the world”. It has a edible history of more than 5,000 years.

The fresh palm fruit string is 100% of the total palm fruit string, the proportion of empty fruit string is 23%, the palm fruit is 65%), and the palm oil content of the whole palm fruit string is (26%), and the palm kernel oil content is 3.25%.

Preparation Technology and equipment of Palm crude Oil

The traditional process adopts steam brake fermentation, the technology is mature, the disadvantage is to produce a lot of wastewater, has a great impact on the environment.

The process mainly has the following sections. Raw material storage section: fresh palm fruit is measured and recorded into the factory by pound room, and the measured palm fruit string is unloaded to the loading slope and stored.

Sterilizer section: place palm fruit string in horizontal killing enzyme tank or vertical sterillizer for 90-120 minutes. The purpose of sterillizer is to destroy lipase to avoid the increase of free fatty acid content in oil; high temperature sterillizer can make the fruit soft and facilitate mechanical granulation; pretreatment of pericarp to prepare for subsequent processing; preconditioning of fruit core to reduce kernel damage.

sterillizer process: after palm fruit enters the sterillizer, closes thesterillizer to close the door quickly, opens the exhaust valve below the sterillizer, and then passes into the saturated steam of pressure 3bar (temperature about 145 ºC). After the cold air in the tank is basically discharged, close the exhaust valve and enter the cooking and sterillizer stage. The sterillizer time is generally 90 minutes. After sterillizer, close the intake valve, open the valve leading to the silencer, and drain the water and steam from the tank before opening the door of the sterillizer.

Threshing section:The purpose of threshing is to separate the oil palm fruit from the fruit string by strong vibration. The separated oil palm fruit is then fed to the cooking tank by the conveyor. The empty fruit string is discharged from the other end of the drum to the storage yard, or transported out of the plant for recycling of palm garden cover, or incineration on site as fertilizer to farmland.

Digester and cooking: the purpose of mashing and cooking is to tear the epidermis of the fruit, separate the pulp from the core and mash the pulp tissue, and heat it to soften the pulp and destroy the cellular structure of the pulp, which is beneficial to the precipitation of oil from the pulp tissue.

There is a feeder entrance on the upper part of the digester and an outlet port in the lower part. There is a central shaft with many axial batting rods in the digester, and there are many liner plates in the inner wall of the digester. The fruit particles mash the pulp under the action of stirring the baton and the collision of the liner. Crushing cooking equipment is a cylindrical tank with heating jacket. Indirect steam is inserted into the jacket for heating, and there is a direct steam nozzle in the tank to adjust moisture and temperature. After heating for 1 h, the temperature of the whole billet can reach about 90 ºC-95 ºC. The purpose of heating is to destroy the emulsification state of  formed by oil and water in fruit tissue, to reduce the viscosity of oil, and to facilitate the flow and precipitation of oil.

Press section: after the above steps, palm fruit is sent to spiral press, oil brown fruit is divided into: oil, water, solid impurity mixture and cake (fiber and core). The continuous screw press is adopted. It has a horizontal box with holes, an 8-character cross-shaped box, with two screws in it, and a cake head at the slag discharge port of the box body. It can control the pressure to ensure that the residual oil in the cake is minimized, and it can also adjust the crushing rate of the fruit core to a reasonable range. Under the action of spiral pressure, the fried cake precipitated from the pulp tissue was extruded from the machine head, which contained the kernel (unruptured brown kernel oil), and the liquid part flowed out from the lower mouth. After filtration, it was sent to the butterfly centrifuge to obtain hairy palm oil. After pressing, the oil palm fruit is divided into two parts: the mixture of oil, water and solid impurities; the oil yield of fiber and kernel is 20% of crude palm oil and 2% of hairy palm kernel oil according to the fresh fruit of palm. The parameters of crude palm oil: orange color, semi-liquid oil, surface density (50 ºC): 0.8896 ≤ 0.8910, saponification value: (mgkoh/g oil) 190 × 202, iodine value (gz2/100g).

Crude oil purification section: this step is to get purer palm oil. The crude oil generally contains 66% oil, 24% water and 10% non-oil solid. The oil is washed by precipitation filtration and the fiber is separated from the oil. Then continuous precipitation clarification can be carried out to obtain oil and sediment. After centrifuge separation, the oil enters the vacuum to dry. Keep after drying. The precipitates are clarified twice, the oil precipitates are filtered, the contaminated oil is separated, the oil is settled twice, the dirty oil mixture is clarified and separated, and the skimmed oil is secondary settled. the sewage WeChat pump is treated with the sewage treatment tank.

The second treatment method: the wool brown oil is filtered by vibrating screen, and then the crude slag such as fiber is removed and then flows into the tank with indirect steam and direct steam. After purification, the mixture of brown oil and water is injected into the high tank by centrifugal pump to steady flow into the clarification tank. The clarified oil flows into the oil storage tank from the outlet of the clarified tank, removes the water from the oil through the disc separator, then cleans the oil through the plate heat exchanger, heats to 105 ºC, and drains the residual water in the oil from the vacuum dryer. The oil in vacuum drying is sucked by the shielded electric pump at the bottom and pumped to the storage tank.

The basic standard of palm crude oil in storage tank is that the acid value is less than 5%, the moisture content is between 0.1% and 0.2%, and the impurity should be less than 0.02%.

Fiber, fruit nut separation section: press cake through screw conveyor broken, into the air separation system. The separated fibers are sent to the boiler room as fuel. The kernels are transported to the warehouse for temporary storage. After the fiber cake residue falls into the broken cake winch, the cake residue is dispersed through the intermittent blade of the hanging dragon. In the process of forward transportation, the cake residue water vapor evaporates, and finally falls into the fiber and nuclear separator. The suction system composed of centrifugal fan and air net carries the fiber to the boiler room for combustion, while the brown core with larger specific gravity falls into the bucket hoist from the fiber and the other part of the nuclear separator and is transported to the nuclear seed tank, in which the wet core can be further blown dry by blowing air.

Nut recovery section: the softened nucleus should be softened and tempered before it is broken, and the softened nucleus will be divided into two or more valves after broken by a wavy crusher, and the kernel will be released. The broken mixture enters the broken mixture separation system, which adopts two-stage separation and water bath separation. After separation, the shell was obtained and sent to the storage bin for temporary storage, which was used as fuel for boiler room when needed, and the moisture content of kernel was reduced to less than 7% by hot air drying after separation. After drying, the kernel is sent to the kernel storage warehouse for storage. The brown kernel oil is extracted from brown kernel after peeling and separating, and the residual oil of fiber residue is about 10%. The oil can be extracted by solvent leaching. The core selected by the wind also needs to remove the stone, iron and branches.

Palm Kernel revovery section

Power station 
To Use the biomass boiler,pressure 25kg,to produce the steam for driving the steam turbine generator to produce the electricity,the waste steam for the sterilization process,crude oil clarify process,etc.

Storage of crude oil: during storage, after vacuum drying in the factory, the temperature of the oil is reduced to 45 ºC 50 ºC before entering the tank. After the oil is put into the tank, the constant temperature of 55 degrees can be kept, and some antioxidants can also be added to the oil to passivate trace metals in order to eliminate the oxidation of oil during storage. Matters needing attention in transportation and unloading: first, epoxy resin is used in the coating of the tank, and the cleaning of the tank should be checked before loading. Second, spray and cover with inert gas. Third, the loading of oil does not splash. Fourth, the oil temperature is kept at 32 °40 ºC during shipment. Heating the oil before loading increases its temperature at a rate not exceeding 5 ºC every 24 hours. Fifth, the loading temperature of oil does not exceed 55 ºC.

Sewage treatment section: the content of organic matter in wastewater is very high, and the bod of biochemical oxygen consumption is about 25000ppm, which needs to be treated and qualified before it can be discharged. Storage tank sewage treatment system is the most widely used and effective treatment method at present. This kind of processing system is economical and affordable, only needs to provide sufficient space, the investment cost is small.

Small palm fruit oil press plant and palm press structure is reasonable. It is easy to operate and maintain. It can be fitted with motor or diesel engine. Every hour it can process palm fruit 2T. It is the first selection for palm oil producing customers.  The palm oil press can press the palm fruit, and get the primary oil mixed with palm cores, water and marc. After separation by other machine, the primary oil.

The general process : FFB(fresh palm fruit bunches)—Raw materail Reception— Sterilizing —Threshing —Digesting &pressing —Oil clarification station—Kernel recovery statation –CPO(crude palm oil)

	Palm fruit cooking pot Put the palm skewers into a cooking pot, and cook at high temperature to destroy the lipase in the pulp to prevent the free fatty acid content in the oil from rising. On the other hand, high temperature sterilization can make the fruit soft and easy for mechanical threshing
	Palm fruit threshing machine Its main function is to separate palm fruit from palm fruit bunch.
	Palm fruit masher After the palm fruit bunches are mashed, the pulp and the core are separated, and the cell structure of the pulp is destroyed, which is more conducive to pressing.
	Palm fruit press The crushed palm fruit enters the palm oil double-screw oil press for pressing. After pressing, two parts are obtained: a mixture of oil, water, solid impurities, and a pressed cake (a mixture of fibers and cores). The mixture of oil, water and solid impurities flows into the oil clarification section through the crude oil tank; the pressed cake enters the palm kernel recovery section.
	oil residue separation equipment Mainly separated by high-speed centrifugal force
	Plate and frame filter Filtered through a layer of filter cloth, the filtered oil is more pure
	Palm Oil drying After the above steps, the oil is very clear now, but still contains a lot of water. By vacuum drying, the water is removed. Finally, we get the crude palm oil we needed, pump to oil storage tank.

Small Palm Fruit Oil Press Plant Process

Sterilizer section:
Put the palm fruit bunches into sterilizer for 90 – 120 minutes. The purpose is to destroy lipase to avoid the increase of free fatty acid content in oil; high temperature sterilizer can make the fruit soft and easy to thresh mechanically; pretreatment of peel for subsequent processing; pre conditioning the core to reduce the damage of palm kernel.

Threshing section:
The purpose of threshing is to separate the oil palm fruit from the fruit string by strong vibration. The equipment for threshing is drum type fruit remover. The separated oil palm fruit is then fed to the cooking tank through the conveyor. The empty fruit string is discharged from the other end of the drum to the storage yard, or recycled for palm orchard cover in the delivery area, or the field incineration is applied to the farmland as fertilizer.

Digester section:
The purpose is to tear the fruit peel, separate the pulp from the core and mash the pulp tissue. Meanwhile, the flesh will be softened by heating, and the structure of pulp cells will be destroyed, which will help the oil to be separated from the pulp tissue.

Press section:
After the above steps, palm fruit is sent to the oil press, and then palm fruit is divided into oil, water, solid impurities mixture and cake (fiber and kernel).

Crude oil purification section:
this step is to obtain a relatively pure crude palm oil. The crude oil obtained from oil press generally contains 66% oil, 24% water and 10% non oil solid.
The fiber is separated from the oil by sedimentation and filtration. Then, the oil and sediment can be obtained. The filtered oil from the filter enters into vacuum drying.

Oil drying section:
After the above steps, the oil is very clear now, but still contains a lot of water. By vacuum drying, the water is removed. Finally, we get the crude palm oil we needed, pump to oil storage tank.
The water from dryer machine can be pumped to crude oil gutter to further recycle oil if needed.
The sediment is treated with secondary clarification. After the oil sediment is filtered and the sewage oil is separated, the oil will be settled twice, and the sewage oil mixture will be clarified and separated. The oil left will be settled again. The sewage will be pumped into the sewage treatment tank for treatment.

Project Name: 5tpd palm oil refinery and fractionation plant

Production Capacity: 5 tons per day

Factory Location: Harcourt Port, Nigeria

Crude edible oil to be processed: crude palm oil

Production Process: palm oil refining process includes degumming process, deacidification process, decolorization process, deodorization process; palm oil fractionation process includes heating process, crystallization process, filtration process;

Palm oil refinery technology

The purpose of palm oil refinery is to get rid of impurities in crude palm oil, so that the finished palm oil can achieve edible oil standards.

The basic palm oil refinery process

1. Crude palm oil filtering
The purchased crude palm oil shall be filtered first to remove suspended particles and other impurities before it can go further processing steps.

2. Palm oil degumming
Colloids include phospholipids, sugar, protein mixtures, trace metals and other impurities. Degumming is the process to remove these impurities. As the quality of raw oil largely determines the quality of the final product, the colloids in raw oil is an important factor that affects the quality of finished oil. The main technological process of palm oil degumming: crude oil–heat exchanger—(add acid) mixer –intermediate tank—(add alkali) mixer—centrifuge—(add water) mixer—intermediate—centrifuge– refined oil. The process adds phosphoric acid to the crude palm oil which is heated to 90 ~ 105℃ with intense stirring and mixing for about 3 minutes, then neutralize part of phosphoric acid with dilute alkali; till all the oil is centrifugally separated, add hot water to it and place it in a static way. Then centrifuge it by extremely high gravity acceleration. Finally, the content of phospholipids in degumming oil can be below 5 * 10-6.

3. Neutralization
Neutralization deacidification is a process that has a great influence on finished palm oil quality and price. If there is problem in neutralization process, it will bring difficulties to every process after decolorization, and reduce product quality and yield.

4. Decolorization
Decolorization is one of the most important processes in palm oil refining. In addition to removing pigment from crude palm oil, it can also reduce phospholipid content, peroxide value, soap content and metal ion content, thereby improving the color, flavor and oxidation stability of oil, and providing good conditions for further refining hydrogenation and deodorization of palm oil. At present, the most commonly used method of oil decolorization is activated clay adsorption decolorization, that is, the use of clay, which has a strong selective adsorption, to remove the pigment dissolved in oil or colloidal particles dispersed in oil pigments and other impurities under certain conditions.

5. Deodorization
Deodorization is a very important step in palm oil refining. In the oil deodorization process, in addition to achieve the purpose of deodorization, more emphasis is now placed on achieving unit operation at low temperature and short time to suppress the production of trans fatty acids, reduce the loss of tocopherol, reduce polymerization and the decomposition of vitamins (A, D, E). In order to prevent oxidation, degassing and direct steam are used before degassing to improve the deodorizing effect. Heat recovery can be achieved through heat exchange between cold oil and hot oil.

6. Fractionation
Fractionation is a special treatment for palm oil, that is, when palm oil is cooled to about 45℃  and kept for a certain period of time, the high melting point components will crystallize and precipitate. After secondary filtration, the high melting point components can be “separated” into three products with different melting points. These three products are: palm stearin, melting point≥40℃; palmitic acid, melting point about 30 C; liquid palm oil, melting point≤20℃. The yields of these three products are about 20%, 30% and 50% respectively, while the quality of refined liquid palm oil can reach the standard of high-grade cooking oil.

In Nigeria, many people produce palm oil manually or with traditional machine, but the production efficiency is very low. So our small scale palm oil processing machine is very hot sale in Nigeria.

small palm oil press machine is mainly used for processing small capacities palm fruit. Usually used fors mall palm oil mill.

The palm oil press machine has a reasonable structure for squeezing palm edible oil.
The small palm oil press machine is easy to operate and maintain. Can be equipped with an engine or diesel engine.     The capacity of this palm oil press machine to press palm edible oil is 100-500kg/h, which means that this machine can process 300-500kg of palm fruits per hour. It is the best choice for small capacity palm oil production customers. The final oil is edible red oil. You can refine or consume directly.

Advantages and benefits of our small scale palm oil press milling extractor expeller machine

1. Simple design
Using the most advanced machinery, high-quality carbon steel and carefully selected materials to ensure the quality and service life.

2. Easy to use
Using spring compression to ensure low oil residual in the cake,and simple operation. The oil residual ratio is equal to or less than 6%.

3. Effortless maintenance
Components are easy to access, disassemble or assemble, to ensure fast maintenance.

4. Expertise
Specially designed for palm fruit, good oil extraction.

Features of small scale palm oil press milling extractor expeller machine

1. Small scale palm oil extraction machine mainly used to extrude palm fruit oil.

2. Designed and manufactured by Henan Doing company

3. It’s good for small scale farm, small palm oil factory, home using,

4. Easy operation, easy move, easy change place

5. Driven by motor or diesel engine

6. Popular in Africa, South Africa, South America, Cameroon, Thiland, Ghana, Nigeria, etc.

Video of Small Scale Palm Oil Press Milling Extractor Expeller Machine

Small Scale Palm Oil Mill Plant

Such small scale palm oil mill can be customized for 1 ton/hour, 2 ton/hour, 3 ton/hour, and 5 ton/hour input. small-scale palm oil processing machine is a complete palm oil processing production line.

In addition to oil palm, Nigeria is also rich in other oil crops such as soybean, sunflower seeds, peanut/groundnut, cottonseed and more. Therefore, it is definitely a profitable endeavor to start oil making business in Nigeria.

Small Sacle Palm Oil Mill Plant

• 1-10 Ton/D Mini Palm Oil Mill Plant
• 10-20 Ton/D Small Palm Oil Mill Plant
• Small Palm Oil Refining Machine

Complete Palm Oil Mill Plant

• Fruit Reception System
• Sterilizing System
• Threshing System
• Digesting System
• Pressing System
• Crude Palm Oil Clarification System
• Bulk Oil Storage System
• Palm Kernel Recovery Plant

Palm Kernel Oil Extraction Plant

• Screw Oil Pressing Plant
• Solvent Extraction Plant

Palm Oil Refinery Plant

• Palm Oil Degumming Process
• Palm Oil Deacidification Process
• Palm Oil Bleaching Process
• Palm Oil Deodorization Process

Palm Oil Fractionation

Refined palm oil should go through fractionation process to separate solid phases (Stearine) and liquid phases (Olein). It is achieved by thermo-mechanical means. Fractionation can greatly maximize the value of products. Our fractionation project adopts dy fractionation process. We have posted the advantages and disadvantages of 3 common fractionation process of palm oil production which showed why dry fractionation is the best choice.
The typical fractionation process of palm oil mill is pre-heating, cooling, crystallization, and filtering.

The liquid fraction, which is also known as olein is getting more and more popular as liquid cooking oil especially in tropical climates, competing successfully with expensive sunflower, corn, groundnut oils.

•    Heat treatment;
•    Form crystal nuclei and allow crystal growth and maturity by cooling method;
•    Separates soft fat from solid by plate filtering machine;

Factors Affecting Fractionation Effect of Palm Oil

• Control of Cooling Water Temperature;
• Filling and Squeezing pressure;
• Filter cloth air permeability (400, 600 L/dm2/min);
• Design of crystallizers;

Palm Oil Fractionation Plant

Palm oil fractionation plant has three fractions: stearin (palm stearine), soft fat (palm olein) and middle section (palm mid-fraction). After palm oil fractionation, palm oil will be clean after 5.5 hours in 0℃ to ensure it can keep flow ability and transparency in the refrigerator and improve the quality and appearance of palm oil.

Our palm oil fractionation technology and machinery is based on a fully continuous and automatic system without adding any solvent or chemical, ensuring premium quality of oil products.

The oil is cooled slowly to a certain degree in dissolved state, passing through plate filter to separate crystals and precipitate solid ester. Our palm oil fractionation plant is your best choice to produce stable palm oil olein and stearine products that fits your standard and quality requirements.

Features of Our Fractionation System

• Simple process;
• Easy and convenient operation;
• No environmental pollution;
• Low consumption of steam;
• Reasonable price;
• Satisfied palm oil fractionation results;

Professional palm oil processing manufacturer, help you build tailor-made palm oil refinery plant for processing vegetable oil or edible oil products! Low cost, premium performance!

Palm oil deodorization is the final process of edible palm oil refinery plant. It is a result of heating-crushing and heating extraction development. Odiferous material and other minor undesired particles are removed from the crude palm oil or palm kernel oil in the deodorization process of palm oil. The shelf life of refined palm oil is largely prolonged after been processed in palm oil deodorizer equipment.

Deodorization of Palm Oil

Palm oil deodorization is mainly a physical refining process belongs to steam deodorization. High pressure steam is introduced as a kind of stripping agent to remove various volatile components. The deodorization of palm oil usually processed at high temperature (>200°C) and low pressure.

In deodorization process of palm oil refinery, before deodorizing, the bleached palm oil is deaerated and heated firstly. QI’E Machinery is a reliable vegetable oil refinery manufacturer. Our palm oil deodorizer equipment employs a combined methodology. The bottom part designed for consistent quality, while the upper part is designed to remove free fatty acids. Through heat exchanger, the oil is cooled and ready for storage. In palm oil deodorization, the FFA level is first reduced from 3–5% to below 0.5% in a structured packing. And then the oil enters the deodorizer. As a kind of co-product of refinery plant, the free fatty acids are collected and stored.

Four Factors Affecting Palm Oil Deodorization Process

• Temperature
• Time
• Pressure
• Amount of Stripping Steam

Qualified deodorized palm oil generally has bland taste and odor, light color, high oxidative stability, and low residual FFA content. In addition, high-quality edible vegetable oils should contain no contaminants or degradation products, low levels of polymeric and oxidized triglycerides, high amounts of natural antioxidants, and low trans fatty acid (TFA) levels.

As Experienced Manufacturer and supplier of palm oil refinery plant in China, we offer premium palm oil refinery machine and equipment. We already have plenty of successful turnkey oil refining projects around the world. Feel free to inquiry about cost of our palm oil refinery machines or detailed information about starting a small or large palm oil refinery plant! We are always at your services!

Bleaching is one of the key processes of edible palm oil refinery. Palm oil bleaching is generally designed before deodorization in palm oil refinery. Clay which absorbs pigmentation is added to the oil then heated. Then, the oil-clay mixture is filtered and spent cake is dried to remove the oil. Color, residual phosphatides, soaps and metals will be removed in this process. The following some onsite photos of palm oil refinery workshop.

Absorptive bleaching process is mainly affected by temperature and humidity. However, the quality of refinery machines, the structure and type of bleaching earth also matter.

 Bleaching Process of Palm Oil Refinery

• To avoid the influence by air and consume less clay, earth bleaching is processed under vacuum;
• The dosage of clay is based on the color requirement of final palm oil;
• Bleached oil is flushed through closed stainless steel filtration discs for less residue in the meal.
• To ensure stable production and easy operation, the filter is controlled automatically.

The purpose of bleaching is to remove color producing substances in the crude oil. The absorbent materials is known as bleaching earth or clay. There many different adsorbent materials suitable for vegetable oil refinery industry, such as acid activated bleaching earth, natural bleaching earth, synthetic silicates and activated carbon.

Acid activated bleaching earth is the most common use absorbent materials. It is also called bleaching clay, bentonite or fuller’s earth clay in some places. The primary component of acid activated bleaching earth is aluminium silicate. Actually, the color producing materials are not removed completely by the bleaching earth. Much of them are actually removed by thermal destruction in the deodorization process.

Feel free to contact us if you need detailed information about palm oil refinery plant and refinery equipments.

Supply all kinds of palm oil refining machines and customized palm oil refining plant. Help you make the best solutions for palm oil refinery with competitive cost and premium equipment quality.

Deacidification Process of Palm Oil

Before refining, the crude palm oil certainly contains a certain amount of free fatty acids. The process of removing these free fatty acids from the crude oil is called deacidification. There are many different refining solutions. Alkali refining and distillation are the most common use methods, which are widely applied to refining process of edible oil including palm oil.

Alkali Refining

Alkali-refining is the main palm oil refining method in its early stage, especially in Malaysia Palm Oil Production Market. It is also called chemical refining. Actually, alkali refining is mostly applied to refining process of edible oil.

 Distillation Refining

In this process, free fatty acid is removed from the crude oil by distilling under vacuum. No alkali is introduced in distillation crude palm oil refining process. Distillation is also known as physical refining. It is a new technology in edible oil refinery industry, which ranks with centrifuge continuous refining, miscella alkali refining and Zenith method as today’s four advanced cooking oil refining technology. With the development of oil refining machines and technology, physical refining has widely applied to refinery plant of low-content phosphatides vegetable oil such as palm oil refining, coconut oil refining and babassu oil refining.

Both refining process and refining machine affect the efficiency, yield and cost of refining plant. Besides, the quality of crude palm oil produced as palm oil mill also effects the refining process.