LD Refined Sunflower Oil Mill
What is oil refining
The process of refining of crude oil and removing impurities is known as refining of the fats and oils.
What is crude oil
By pressing or leaching, the unrefined vegetable fats and oils are commonly known as crude oil.
The main component of crude oil
Mixed fatty acid triglycerides, commonly known as the neutral oil. Phospholipids, free fatty acids, pigments, peroxides, waxes and various mechanical impurities. The presence of these impurities is bad for taste , processed and storage of the fats and oils.
Mechanical impurities mixed with oil
Refers to the sediment, blank powder, cake, fiber, grass clippings and other solid impurities in the oil producing and storing process. Such impurities are not soluble in oil, so it can be removed by filter and settlement .
Oil pigment
Oil pigment can make grease with darker colors, affect the oil appearance, adsorption will be used to remove it from the oil.
Main process of refining
About refining
Deguming process
The process of colloid impurities removal in oil called degumming, the colloidal impurities in crude oil mostly is phospholipid, so deguming is often called the dephosphorization . Degumming method include hydration method, adding acid method. heating method, and the adsorption method.
Alkali refining deacidification
It refers to the refining process that saturate the free fatty acids with alkali, then generate fatty acid salts (soap) and water, the soap adsorb a portion of impurity then settling out from the oil.
The precipitate formed called soapstock. The alkali used for saturating the free fatty acids is NaOH or Na2(CO)3 or Ca(OH)2 and so on. the oil industry generaly use caustic soda.
The alkali refining itself has the synthetic action of deacidification, degumming, off impurities and decoloration.
1. The alkali saturate the fatty acid and generate the soapstock precipitation.
2. The soapstock adsorb protein and a small amount of mechanical impurities then generate
precipitation.
3. Saponify part of the phospholipid, as to the crude oil with high acid value and less
phosphorus,we can use the alkali refining to dephosphorize and deacidify in the meantime.
Decoloration process
Decolorization reasons: 1, impact the appearance of oil. 2, part of the pigment is poisonous.3,
the food oil processing needs decoloration.
Deodorization process
The pure triglycerides is no odor. the Oxides of non-glyceride (ketones, aLDhydes,
hydrocarbons) and unsaturated fatty acid glycerides have odor. odor generated in the oil making process, such as the odor in the leaching grease solvent, soap odor in the alkali refining oil and clay odor in decolorization oil.
Deodorizing purposes
1. The presence of odor substances.
2. Some residual pigment.
3. Remove the free fatty acids, mainly remove the substances that caused the odor. Remove all
the bad smell, the process called deodorizing .
Dewaxing process
The wax is a combination of monocarboxylic acids and monohydric alcohol. Having a higher melting point (78-82 ÃÂð C).
Dewaxing reason ( wax exists primarily in corn germ oil, sunflower oil, rice bran oil)
Hard to dissolve in the oil,and the human body can not absorb . it is mist in the oil under the room temperature, the oil becomes cloudy. The waxy existence impact on oil taste and oil transparency, also affect the processing, should be removed from the crude oil.
Oil dewaxing is taking the great different melting point between oil and wax, through crystallization by cooling, then make the oil and wax separated by filtration or centrifugal separation .
What are the refining machines like?
What certificates do LDâÃÂÃÂe have?
Oil refining means separating impurity from oil based on the different characteristics of oil and impurity, in order to enhance the stability and security of oil. Oil refining including two technologies, physical refining and chemical refining.echnological process details of LD Refined Sunflower Oil Mill:
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1. Acid reaction process
Oil temperature can be adjusted by screw plate heat exchanger. When the temperature is heated to about 80℃, mixing about 85% food grade phosphoric acid into acid reaction tank for reacting. In the tank, most non-hydrated phospholipid transfer into hydrated phospholipid.
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2. Neutralization process
In the neutral section, degummed oil with appropriate temperature and the appropriate concentration of alkali liquor, into the neutralization centrifugal mixer mixing, in order to achieve the effect of mixed, the mixture is then sent to neutralization tank for enough time, in this process, excessive alkali neutralization of free fatty acids and some phosphate form soapstock , after pumping oil soap mixture into heater oil heating to 85 ~ 90 ℃ in centrifuge separation oil - soap (or oil - glue). Oil soapstock of the separated (or foot) feet into the oil tank, and then to the salting out with soap pump tank isolated part of the oil.
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3. Washing process
Neutral oil from separator, still contains about 500 ppm soap, in order to reduce the residual content of soap, oil is joined by about 10% of hot water, washed in the washing mixer, hot water will absorb oil soap and other impurities, then in the water separator are separated.
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Shandong Leader Machinery Co.,ltd. is a microwave equipment, microwave drying sterilization machine, microwave heating equipment, microwave drying machine, microwave sterilization equipment, microwave drying equipment, whole s microwave curing equipment, microwave drying sterilization condiment, Shandong microwave drying Machine, melon seeds microwave dryer and other products specializing in the production and processing company, has a complete and scientific quality management system. Shandong Leader Machinery Co.,ltd.integrity, strength and quality of products recognized by the industry.
Why do you choose the Shandong Leader Machinery Co.,ltd. LD Refined Sunflower Oil Mill?
1.Healthy! Pure mechanical squeezing craft maximally keeps the nutrients of the oil plants.No chemical substances left
2. High working efficiency! Due to a high working efficiency of the screw oil press machinery,both time and power can be saved.
3. Long durability! All the parts are made of the most suitable material and treated with refined crafts, such as cemented quenching and tempering to increase the hardness, consequently the durability.
4. LD Refined Sunflower Oil MillCost-effective! Low investment! The wearing parts on the oil press machinery such as the squeeze loop, squeeze spiral and squeeze bar are designed to be dismountable. When they are out of service period, users only need to replace them and there is no need to displace the whole machine.