Grape seed oil production line

1. The process of low-temperature subcritical extraction of grape seed oil is as follows:
Grape seed → impurity removal → softening → rolling → low temperature extraction → grape seed crude oil → refining → refined oil
1) Grape seed pretreatment: The main purpose is to remove impurities and destroy the tissue structure of the grape seed, and at the same time make the green sheet have a shape suitable for extraction.
Process description: The raw materials are removed through a vibrating screen, and the grape seed peel, pomace and other impurities are removed, and then put into the softening pot through the conveyor, and a certain amount of water is added, and the temperature is raised to 45～55℃, and the temperature is kept for a certain time ( About 15 minutes) for softening, and then put into the billet after iron removal, the billet thickness is 0.3 mm, the moisture content is about 10%, and the billet is sent to the extraction workshop.
2) Low temperature: the extraction solvent is butane, the material-to-solvent ratio is 1:1.2, countercurrent extraction is performed 3 times, and the extraction temperature is room temperature.
3) Crude oil refining: the crude oil obtained is extracted, filtered, hydrated, degummed, deacidified, decolorized, deodorized, dewaxed, and refined to obtain light green finished grape oil.

Using grape seeds as raw materials, the fluid extraction method, supercritical CO2 extraction method, solvent extraction method, cold pressing method and hot pressing method were used to extract grape seed oil, and the effects of different oil production processes on grape seed oil phenols and their resistance were studied. The effect of oxidation activity. The results show that the content of oil polyphenols is relatively high, and the content of oil polyphenols is very low. The quantitative analysis of 7 monomer phenols in grape seed oil shows that.

1. Oil-making process of grape seed oil processing equipment 

　　1. The pretreatment and refining production process of grape seed oil processing equipment and its brief description 

　　 preprocessing:  

　　 grape seed → drying → cleaning → peeling and separating → crushing → softening → rolling embryo → drying → leaching → filtering 

　　 steaming and frying oil production line

　　Refining:  

　　 crude oil → deacidification → decolorization → deodorization → refined grape seed oil   

　　 Grape seed wine scraps are squeezed to remove water, dried or dried, and the seeds are separated by separation equipment. The seeds are screened to remove impurities and 30%-60% of the hard shell is removed with a sheller. The shell can extract tannins, and the kernel and part of the shell are crushed with a crusher. 

　　2. The influence of different models and processes on the oil yield of grape seeds 3. The influence of different models and different shell content on the oil yield 

　　Grape seed oil not only has the effect of removing cholesterol from blood vessels, but also has the effect of nourishing brain cells and regulating autonomic nerves. It has a wide range of uses in food, medicine, chemical cosmetics, aviation and other industries. 

　　 2. The refining process of grape seed oil processing equipment The function and use of grape seed oil

Linoleic acid is an essential fatty acid for the human body. It can reduce the level of LDL (low density lipoprotein) cholesterol in the blood, increase HDL (high density lipoprotein) cholesterol, reduce low density protein cholesterol and increase high density lipoprotein cholesterol. Proportion is an important method to prevent cardiovascular and cerebrovascular diseases. In addition, linoleic acid can also lower blood lipids, lower blood pressure, soften blood vessels, prevent blood vessel hardening, and prevent thrombosis. However, the human body cannot synthesize linoleic acid and can only be ingested from food. The content of linoleic acid in the peanut oil that people eat daily is 30%-40%, and grape seed oil is almost twice that, so grape seed oil It is a better choice of edible oil. 

　　 Grape seed oil contains a large amount of vitamin E. One tablespoon of grape seed oil contains about the vitamin E needed for a day. Vitamin E has a good health effect on skin and muscles, and has the effect of beautifying and beautifying. 

　　 Proanthocyanidin (OPC) is one of the effective ingredients of grape seed oil, OPC has a strong anti-

　　 oxidation, its antioxidant capacity is 20-50 times that of vitamin C and vitamin E, and it is an efficient free radical scavenger. OPC can inhibit the peroxidation of lipids in the human body and improve the permeability of capillaries. It is beneficial to the production of collagen, makes the skin elastic, reduces wrinkles, delays the aging of human skin, and maintains beauty. Moreover, proanthocyanidins can block ultraviolet rays, increase radiation resistance, prevent allergies, arthritis, cataracts, cancer and other diseases related to free radicals, and enhance immunity. 

Because of its health-care effect, grape seed oil has been used in Europe for more than 100 years. It has been used as a high-grade nutritional oil for infants and adults, and a high-grade health oil for aerial workers and pilots. It is called "edible beauty products" in the medical field, but it is rarely used in my country.  

　　In the oil and fat production process, the unrefined vegetable oil obtained by mechanical pressing or solvent extraction is called crude oil. The main component of crude oil is fatty acid triglyceride (ie triacylglycerol), in addition to various impurities. These include suspended impurities (sand, grass clippings, etc.), peptic impurities (phospholipids, etc.), oil-soluble impurities (free fatty acids, hydrocarbons, etc.) and moisture. These impurities come from pollution during harvesting, storage, transportation, and processing. Their existence reduces the quality and use value of oils and shortens the shelf life of oils. Therefore, according to the use requirements of various finished fats and oils,  removing them through different processes  this is the oil refining technology. 

　　The refined process flow of grape seed oil processing equipment 

　　 Crude oil-filtration-hydration-standing separation-dehydration-alkali refining-desoaping-washing-drying-decolorization-filtration-deodorization-adding antioxidants-refined oil  

　　 Grape seed oil scouring technology points 

　　Filter 

　　 Use an oil pump filter to filter the crude grape seed oil to remove the solid matter in the oil. 

　　 soften 

Raise the oil temperature to 50℃, add boiling salt water with a concentration of 0.5～0.7, the amount is 15～2O% of the oil quantity, stir while adding, the final temperature is about 80℃, until the rubber particles are uniformly dispersed, the time is about About 15 minutes. 

　　Separate 

　　 Thermal insulation and let stand for 6-8 hours, and separate when the oil-water separation layer is obvious. 

　　Dehydration 

　　The separated grape seed oil is transferred to a water submersible pot and heated to make the oil temperature reach 105～110℃ until there is no blisters.

　　Alkali Refining 

First, keep the oil temperature between 30～35℃, add 30°Be soda ash according to 2O～50% of the total amount of alkali used to prevent overflowing, stir at a speed of 60 rpm, and wait for the foam to fall down. Add 75-80% of the alkali amount to 20- 22°Be  caustic soda, stir, and the final temperature is 80℃. 

　　 Desoaping 

　　 After the alkali refining is completed, keep it in heat and let it stand until the oil soap separation layer is clear and the soap foot settles before separation. 

　　Washing 

　　 Use 80～85℃ soft water mist to spray on the oil surface at a temperature of about 80℃, the amount of water is 10%～15% of the oil weight, and keep stirring until it is cleaned. 

　　Dry 

　　 Indirectly heat to 95～105℃, for about 10～15 minutes, and the water will evaporate. 

　　Discoloration 

　　Use a mixed decoloring agent such as activated clay and activated carbon to process under normal pressure and 80～95℃. Stir fully during operation, and the time can last for 30 minutes. 

　　Filter 

　　 Filter at 70'C temperature or after natural sedimentation. 

　　 Deodorization 

　　 Use steam to indirectly heat the oil in the deodorizing tank to 100°C and spray direct steam. The vacuum degree is 800-1000Pa, the time is 4-6 hours, and the steam volume is 40 kg/ton oil. 

　　 add appropriate amount of antioxidant

　　 The refined grape seed oil has a pale yellow appearance and is crystal clear. After edible hygiene inspection and other physical and chemical index analysis, the water content is 0.11% , acid value 0.22 mg KOH/g, impurities 0.01% , peroxide value 0.043% , arsenic 0.047 mg/l, relative density 0.92, oil at 280℃ during heating test The color remains unchanged and there is no precipitate, so it meets the national edible oil quality standards. 

Because the grape seed shell contains wax, the grape seed will also produce glycolipids during the fermentation process. These substances will not be removed during the above refining process. After 1 week of standing and settling, it is filtered with a special oil filter , Grape seed oil is crystal clear after filtration, which meets the requirements of dewaxing and degreasing .