Corn Germ Oil Press Maize Oil Extraction Oil Refinery Plant
We can offer whole line of corn germ oil extraction plant with turnkey service, Corn germ oil extraction plant include corn germ oil press plant, corn germ oil solvent extraction plant, and corn germ oil refinery plant
We can offer whole line of corn germ oil extraction plant with turnkey service, Corn germ oil extraction plant include corn germ oil press plant, corn germ oil solvent extraction plant, and corn germ oil refinery plant.
What is Corn germ oil?
Corn oil (maize oil) is oil extracted from the germ of corn (maize). Its main use is in cooking, has high nutritional value, where its high smoke point makes refined corn oil a valuable frying oil. It is also a key ingredient in some margarines. Corn oil is generally less expensive than most other types of vegetable oils. One bushel of corn contains 1.55 pounds of corn oil (2.8% by weight).
Usually the corn/maize germ is around 8% percentage in the total corn grain, and the corn/maize germ’s oil content is approx. 50%. The corn crops are abounded in the American countries and China is also the big country to plant corn.
Corn germ oil extraction plant contains three workshops, corn germ oil pretreatment plant, corn germ oil solvent extraction plant, and corn germ oil refinery plant.
Ⅰ. Pretreatment plant of corn germ oil Press plant
Corn seeds→ Cleaning→ Cooking → Prepressing → Solvent extraction plant
Pretreatment plant of corn germ oil extraction plant is very important because it affects extraction effect directly.
Cold Pressing:The temperature should be controlled between 60～ 70 ℃, in order to prevent the protein denaturation or other nutrition in the oil will be easier to refine. By using this oil pressing method, a certain oil pressing machine - cold press will be used.
Hot Pressing: According to the heat and to extract more oil, the temperature should above 110 ℃, the oil pressing machine - hot press can get higher output, usually 10%~15%higher.
Ⅱ. Solvent extraction plant of the Corn germ oil extraction plant
Extraction → mixed oil → evaporation→ steam-stripping → crude oil
Advantages of corn germ oil solvent extraction plant we offer:
1. High oil yield rate, low residual oil in meal;
2. Low labor intensity;
3. Good working environment;
4. Good meal quality.
5. Negative pressure evaporation helps to improve crude oil quality.
Corn germ oil refinery plant Maize Oil Refining Machine:
Crude corn germ oil → degumming and deacidification → decolorization → deodorization → dewaxing → refined corn germ oil.
1.Crude corn germ oil degumming:
In this step gums in crude corn germ oil are removed by hydration with the help of phosphoric acid.
2.Deacidification ( neutralization):
In this step free fatty acids are neutralized by using sodium hydroxide and convert them into soap.Additional impurities are also removed by adsorption on soap.
During decolorization, unwanted pigments are adsorbed physically and oil will become much clearer.
Deodorization is used to remove unacceptable odors by steam distillation, the odoriferous compound are stripped off with the help of live injected steam into heated oil under high vacuum pressure.
5.Dewaxing (necessary for cold areas)
Some kinds of oil like sunflower, maize germ or corn oil have to waxes inside, if these impurities are not removed, the oil will freeze easily under low temperature, thus effecting oil quality and appearance.so this process is necessary in extremely cold areas.
Functions of maize corn germ oil refinery plant main parts:
(1) Refining section: used to P-acid de-gumming, alkali refining de-acid and water rinsing.
(2) Decoloring section: used to remove off pigments, bleaching oils and grease dehydrate.
(3) Deodorizing section: to remove off the odor components in oil.
(4) Dewax: used to remove off the wax in the oil, in order to get the high quality oil.
(5) Heat-transfer oil stove: supply each device production needing heat energy, temperature reach above 280°C.
(6) Steam generator: produce the needing steam for de-odoring and distillation.
(7) Vacuum pump: supply needing vacuum for dehydrate, de-color, de-odor. Vacuum degree can reach above 755mm Hg.
(8) Press filter: filter clay, filter out clear oil.
(9) Air compressor: blow dry bleached clay, blow empty the leftover oil in the press filter.
Working process of corn germ oil refinery plant:
1.pump crude corn germ oil into refining tank and heat with conduction oil, and the temperature will reach about 70°C-80°C after one hour.
2.Add acid or alkali to separate according to the acid value. After one hour's processing and 4-6hours deposit, then convey soap stock to storage tank.
3.Pump refined corn germ oil into decolorizing tank. When it is up to 90-110°C after one hour's heating, add clay into tank for 20min's processing. Then separate clay and oil with filter.
4.Put discolored corn germ oil into deodorization tank with vacuum pump. Heat and process with steam for odor removal. After filtering, you will get final oil product.
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Welcom to email us anytime you are interested in maize/corn oil processing or yo want to start such a corn oil processing plant.
We can offer offer professional corn oil processing technology as well as quality corn oil processing equipment.
We are always ready to serve you!