Corn germ pretreatment and pressing complete equipment
Corn germ has a high starch content. During the oil production process, the presence of the seed coat (the main component is starch) will affect the oil yield and oil quality. Therefore, great attention must be paid to cleaning in the pressing section and the endosperm and skin should be separated as much as possible.
The starch contained in the germ is easy to gelatinize when the material temperature is high. Therefore, the steaming and frying process requires different steaming temperature and moisture requirements for embryo materials of different purity. Low-purity embryo materials have higher starch content and the material temperature Should be lowered. For high-purity embryo materials, the steaming and frying temperature will increase as the purity of the embryo material increases, and the squeezed water content will decrease accordingly.
Screw oil presses are generally used for pressing. In order to ensure a higher oil yield, the pressure of the oil press must be increased. For small-volume oil pressing plants, generally there is no leaching workshop, and the oil press uses a double-screw oil press. , control the residual oil in the pressed cake below 6%. Large-volume oil pressing plants can appropriately reduce the pressure of the oil press and increase the residual oil to be leached in the leaching workshop. Since the water content in the pressed cake is low, for the pressed cake sold directly without leaching, the moisture content should be appropriately adjusted to about 12% for safety reasons.
Process flow:Corn germ → Cleaning → Screening →Roastering → Pressing → Removing residue → Filtration → Crude oil
Process description: The corn germ is first screened or winnowed to remove as much seed coat as possible from the raw material to ensure the purity of the material, and then magnetically separated to remove magnetic metal debris to protect subsequent machinery and equipment.
The cleaned embryo steaming wok is steamed and stir-fried to fully denature and coagulate the protein, agglomerate the oil droplets, and reduce the viscosity. After heat treatment, the temperature and moisture of the material are adjusted to facilitate pressing. The temperature and moisture of the steaming and frying should be based on the purity of the embryo material. And control.
The steamed and fried corn germ pieces enter the screw oil press for pressing. The pressed oil is transported to the clear oil tank through the oil residue conveyor, and then filtered by the filter and transported to the pressed crude oil tank for storage. The clear oil tank is equipped with a slag extraction tank. The machine can realize the re-pressing of oil residue, and the pressed cake is transported to the cake warehouse through the conveyor for leaching in the leaching workshop or to the cake warehouse for storage.
Corn germ oil refining complete equipment
Crude corn oil is a deep reddish amber vegetable oil obtained by pressing or leaching corn germ. Crude corn oil contains phospholipids, sterols, tocopherols and other unsaponifiables, fatty acids, waxes, and a special smell. , Crude corn oil has a high impurity content and becomes turbid at low temperatures, so it cannot be used directly. After refining, corn refined oil with low cloud point, low melting point and stable storage can be obtained that meets standards.
Process flow: crude oil → degumming → decolorization → filtration → deoxygenation → heat exchange → heating → deacidification and deodorization → heat exchange → cooling → crystallization → crystal growth → filtration → refined oil
Process description: After preheating the crude oil, add light alkali to make the impurities and part of the free fatty acids in the oil generate soap stock, then separate the soap stock, then add hot salt water to the oil for washing, separate the soapy water, and process The same washing process once or twice will complete the degumming. The degummed oil enters the decolorization process, and activated clay is added to decolorize in the decolorization tower, and then pumped into a leaf filter for filtration. The filtrate enters the next process after polishing, and the waste clay is discharged through vibration after the leaf filter is dried. The decolorized oil is pumped into the gas separator for vacuum deoxygenation, and then pumped into the oil heat exchanger to perform heat exchange with the deodorized oil to preheat, and then enters the heater to be heated to about 250°C and enters the combined deacidification and deodorization tower in high vacuum. Deacidification and deodorization are carried out under the condition to remove volatile substances such as fatty acids and odors in the oil to the maximum extent. The mixed steam of fatty acids is discharged from the top of the tower and enters the fatty acid capture system for capture and sale. The oil is extracted from the bottom and pumped into the heat exchanger to exchange heat with the oil to be deodorized, and then cooled to obtain the deodorized oil. The deodorized oil is cooled and crystallized in the crystallization tank and then transferred to the crystal-growing stage. The oil after crystallization and crystal-growing is pumped into the filter to separate the wax and grease to obtain the finished oil.
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No. |
Equipment |
Application |
QTY (Set) |
Specification |
Picture |
|
1 |
Cleaning and Screening |
This machine is used to clean and screen seeds |
1 |
Processing capacity: 2t/h Voltage: 380v 50hz Power: 0.37kw*2 vibration motors Sieve plate: 2m long, 1m wide Size: 2600*1500*1400mm Weight: 400kg |
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2 |
Screw Conveyor |
Conveyor is used to constantly convey the material to roaster or oil press machine directly. |
1 |
Capacity：2.1T/H Power： 1.5kw Material：Carbon steel Size: 2.56*0.35*0.67m Weight:150kg |
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3 |
Roaster |
The roaster heats the material to a certain extent to destroy the oil film on the surface, which is convenient for pressing and improving the oil yield. |
1 |
Capacity:100-150kg/hr Motor power: 22kw Size:1450*820*1780mm Weight: 310kg |
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4 |
Screw oil press |
The machine is used for making oil by mechanical squeeze. |
1 |
Speed: 150-200 kg/h Capacity:3.5-5.5T/24hrs Power: 11kw-6P kw Size: 1600*700*1350mm Weight: 530 kg |
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5 |
Plate frame oil filter |
The machine is used for removing the solid impurities in crude crude oil, such as oil residue and material residue. |
1 |
Capacity:190-250kg/h Plate Quantity: 18 pcs Power: 1.5 kw-4P Size:1520*570*640mm Weight: 550 kg |
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Main Equipment
Ruian Every Machinery (MCRAYONE) is located in Zhejiang province, China. Our annual production capacity of oil press machines and related machines is around 10,000 sets. These machines have sold to all over the world, such as South Africa, Nigeria, America, India and so on. Thanks to our experience in the oil press industry (more than 40 years ), we know the demands and best-selling models of each market, so we can provide the most suitable machines to our customers.
We have an experienced engineer team, a professional Research and Design department, and a perfect Quality Control System. All the parts are made by our own factory and the quality can be guaranteed. In addition, we provide a quality warranty for one year.
Our business involves in small-sized oil pressing series, oil engineering designing, equipment manufacturing and installing, project contracting, technical service and so on. Moreover, we have important partnerships with many large Chinese companies, such as China Oil and Food Import and Export Corporation. We are their designated foreign trade exporter and their supplier for small oil presses.
Our goal is to establish a long-term relationships with our customers, based on providing quality machines at a reasonable cost and maximize the customer returns with comprehensive service.
In the course of our company's decades of development, we have obtained multiple official certificates, such as :
Our company has grown into one of the leading oil press manufacturers in China, and our popularity has spread abroad. We welcoming all kinds of orders.
