China's largest oil processming machine manufacturer
China's largest oil processming machine manufacturer
Corn oil is also known as corn germ oil, corn germ oil is extracted from corn germ at low temperature, Corn germ oil is rich in essential vitamin E and unsaturated fatty acids, such as linoleic acid and oleic acid, which have protective effects on cardiovascular and cerebrovascular diseases. Corn oil is refined on the basis of corn refined oil by dephosphorization, deacidification, degumming, decolorization, deodorization.
Corn oil is also known as corn germ oil, corn germ oil is extracted from corn germ at low temperature, Corn germ oil is rich in essential vitamin E and unsaturated fatty acids, such as linoleic acid and oleic acid, which have protective effects on cardiovascular and cerebrovascular diseases.
Cleaning: First of all, the recovered corn germ may be mixed with more corn flour, ground powder and peelings, and needs to be sieved using a double-layer vibrating screen. The screen mesh is designed to remove large and small impurities. For the first layer to remove large impurities, use a coarser mesh number, such as 1.5×1.5 mesh/cm; for the second layer to remove corn flour, grits and skin scraps, use Finer mesh size, such as 4×4 mesh/cm. If there is still a lot of germ scraps mixed in the sieve, you can use a 5×5 mesh cm or 7×7 mesh cm screen to reduce the loss of corn germ.
Drying: After cleaning, the recycled corn germ is prone to oil deterioration and rancidity due to its high moisture content. Therefore, the cleaned corn germ needs to be sun-dried or oven-dried until the moisture content is less than 10%.
Flaking: The dried corn germ is then rolled into 0.3-0.4 mm sheet-shaped embryos by a roller rolling machine, destroying the cell structure to facilitate steaming, frying and pressing.
Steaming and frying: Stir-fry the embryo in a steaming wok for 40-50 minutes, until the embryo gradually turns brown and the aroma can be smelled. Be careful not to have a burnt smell. At this time, the temperature of the embryo is about 115-120 degrees Celsius, and the moisture content is between 2% and 4%.
Pressing: The steamed and fried material embryos are directly fed into the screw press for oil extraction. When operating, the initial feed should be small. After the press is operating normally, the material will be fed evenly, and the oil and cake will be discharged. The oil pressing speed of a normally operating press is
Corn germ oil plant uses the organic solvent to extract oil from the corn germ cake through soaking or spraying methods. There is only less 1% oil content in the meal after solvent extraction. This section includes corn germ oil extraction, wet meal desolventizing, miscella evaporation and stripping, solvent condensation and vent gas recovery.
Major Equipment: Oil extractor, D.T.D.C desolventizer-toaster, evaporator, stripping tower, condenser, recovery system
The solvent extraction of corn germ cake refers to the process of obtaining corn oil from corn germ cake using the principle of dissolution of organic solvents and corn oil. The oil content in corn germ cake after extraction is less than 1%, which reduces oil loss and increases corn oil production. The equipment used in the corn germ extraction process is corn oil extraction equipment, which includes the corn oil extraction part, the wet meal desolubilization part, the mixed oil processing part and the solvent recovery part. After extraction, corn oil and corn germ cake will be obtained. The corn oil obtained after extraction needs to be refined, and the corn germ cake can be sold as an ingredient in animal feed.
The solvent vapor in the corn oil plant enters the condenser. The condensate enters the water separator. The solvent separated enters the solvent holding tank. The water separated is boiled to recover the solvent.
The vent gas in the extraction plant enters the last condenser. The vent gas from the last condenser enters the mineral oil system in the corn oil solvent extraction plant to recycle the solvent.
Corn oil refinery plant is to remove the unneeded and hazardous substances such as phospholipids, free fatty acids, wax, pigment and unpleasant smell in the crude corn germ oil to obtain qualified refined oil.
Crude corn germ oil→degumming→deacidification→decolorization→dewaxing→deodorization→finished oil
Major Equipment: Degumming tank, nentralizing tank, decolorizing tank, crystalizer, deodorization tower, centrifuge, filter, vacuum pump, heat conducting oil furnace.
1. The filtered crude corn germ oil is preheated and mixed with phosphoric acid in the corn oil refinery. The colloids such as phospholipids absorb water and expand to form the emicelle which are precipitated to be removed.
2. The degummed oil enters the alkali refining tank and alkali liquid is added which reacts with free fatty acid to form soapstocks. The soapstocks are precipitated to be removed. Part of the impurities like pigment, phospholipids, protein and mucus are also adsorbed on the soapstocks to be removed.
3. The neutral oil is heated and soft water is added for water washing. Then the oil is centrifuged to remove the wastewater.
4. The water washed oil enters the decolorizing tank and is heated and dried under vacuum. The oil is then fully mixed with bleaching clay. After bleaching, the mixture is filtered to remove the waste clay. The decolorized oil enters the crystalizer in the corn germ oil production line and filter aid is added. Then the oil is cooled rapidly for crystallization. The mixture is filtered to remove the wax.
5. The dewaxed oil enters the deaerator to remove the air and then enters the deodorization tower for deodorization.The deodorized oil is filtered to obtain the refined corn germ oil.
Corn germ oil refining machine are as follows:
1-2-3-5-10TPD batch cooking oil refinery machine;
10-15-20-25-30-50TPD semi continuous cooking oil refinery machine;
50-80-100-150-300-600TPD full continuous cooking oil refinery machine;
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