Preparation process of peony seed oil:

　　 Seed cleaning and impurity removal: When seeds are harvested, dried, packaged, transported, and stored, it is inevitable that they will be mixed with sand, soil, stems and leaves and other debris. Removal of impurities improves oil quality and oil yield, reduces equipment wear, increases output and reduces energy consumption. Vibrating screen is used to remove impurities, and the impurity content of seeds after removal is <0.05%.

Seed shelling and kernel shell separation: Seed shelling is to increase oil yield, reduce oil loss, improve oil and cake quality, give full play to the production capacity of oil production equipment, reduce equipment wear and maintenance costs, and reduce production It consumes electricity and is conducive to the comprehensive utilization of the leather case. The shell content in the kernel is <8%, the kernel content in the shell is <0.5%, and the moisture content is 10-12%.

　　Moldy seed kernel removal: During seed harvesting, drying and storage, some seeds will inevitably become moldy and deteriorated due to weather and improper storage. The moldy kernels are removed to improve the quality of oil. Peony seeds are naturally white, and spoiled seeds can only be seen after peeling. Deteriorated seeds can only be sorted manually, and the picking rate is required to be ≥99%.

　　 Stir-frying: Stir-frying can condense oil, adjust the structure of the material, improve the quality of oil, increase output, and reduce power consumption. The frying pan is made of heat-conducting oil, and the frying temperature is below 130℃. Baking time is 40-50 minutes.

　　 Squeezing oil: A screw press is used for oil production. The whole process of oil extraction does not involve any chemical additives to ensure that the oil is safe, hygienic, pollution-free, and natural nutrition is not destroyed.

　　Peony seed oil refining process:

　　 Peony seed oil degumming: The colloidal impurities in crude oil are mainly phosphorus. The presence of gelatinous substances such as phospholipids not only reduces the quality of the oil, but also promotes transitional emulsification between the fat and the lye during the alkali refining and deacidification process, which increases the difficulty of separation of the saponins and increases the loss of neutral oil. Therefore, it should be removed first. For hydration and degumming, the temperature is raised to 60°C under stirring, and boiling water of 4 to 5 times the phosphorus content in the oil is added. The water temperature is slightly higher than the oil temperature. When necessary, 0.2%—0.3% of the oil weight in the water can improve the hydration effect. Water addition operation is an important stage of hydration. The amount of water added, the temperature of water and oil, the speed of stirring and adding water, etc. should be carefully controlled. During hydration, you should always use a spoon to sample and observe in the pot, and flexibly control the amount of water and the speed of water addition according to the situation. After adding water, when the rubber particles begin to accumulate, start slow stirring and raise the temperature to 75°C. When the liquid level shows obvious oil path, stop stirring and let it stand for 3-4 hours, and in winter for 4-5 hours. Until the hydration oil feet are separated from the grease, the oil feet are released, and the degumming oil enters the next process. Peony seed oil contains low phospholipids, so it is not necessary to degummed separately in the production, and can be carried out together with the deacidification process.

　　 peony seed oil deacidification: oil deacidification is mainly to remove free fatty acids in crude oil, as well as a small amount of colloids, pigments and trace metals in the oil. Deacidification operation is one of the important factors that directly affect the yield and quality of oil refining. Alkali refining and deacidification is widely used in industrial production. Pump the cleansing oil into the pot and stir evenly to raise the oil temperature to 60°C. At the same time, perform rapid stirring at a speed of 60 rpm, spray the measured lye into the oil evenly, and continue to stir quickly to make it fully mixed with the oil. Then change to slow stirring at 30 rpm. At the same time, increase the temperature to 75°C until the oil and soap particles are clearly separated and easy to precipitate, stop the gas, let the soap particles settle, let stand for 3 hours, and then wash with hot water slightly higher than the oil temperature to remove Eliminate impurities such as soap particles remaining in the oil. When the oil temperature drops to 60°C, start filtering and enter the next program.

　　 Peony seed oil decolorization: The color and luster of the oil and other impurities must be decolorized to meet the product quality standards. At the same time, it provides more favorable conditions for deodorization and refining. Decolorization must meet the product requirements color index; remove relevant pigments and quantitative metals; further remove traces of saponins, phospholipids and other colloidal impurities and certain odor substances remaining in the grease; remove polycyclic aromatic hydrocarbons and residual pesticides; reduce oil peroxidation value. Activated clay is used as decolorizing agent, and appropriate amount of activated carbon can be added when necessary. The decolorizing grease is sucked into the decolorizing pot from the oil storage tank by vacuum, and heated to 90°C under vacuum, and the air and moisture in the oil are removed. Then suck in the liquid decolorizing adsorbent (the amount is based on the color standard achieved by the decolorization, generally between 1-5% of the oil weight), and under the condition of full vacuum stirring (the vacuum is 8 kPa absolute pressure), the contact between the oil and the agent is about After 30 minutes, it was cooled to 70°C and pumped into the filter to remove the decolorizing agent to obtain decolorizing oil.

　　 Peony seed oil deodorization: The purpose of oil deodorization is to remove odor-causing substances in the oil and other substances that are easy to volatilize, improve the odor and color of the oil, and increase the stability of the oil. The peculiar smell of oil, the peculiar smell produced by decolorization, the clam smell produced by the oxidation of oil, etc. In the deodorization stage, these unpleasant odors are required to be sprayed directly into the steam distillation at high vacuum and high temperature to remove them. First open the steam valve and cooling water valve of the solar jet vacuum pump to vacuum the deodorization pot. When the vacuum reaches a certain level, open the oil inlet valve to suck the decolorized oil into the deodorization pot by vacuum, and then open the thermal oil valve to reduce the temperature in the pot. When the temperature rises to 190°C and the temperature reaches 100°C, the direct steam is turned on to fully turn the oil in the pot. Spray direct steam for about 3 hours. During the entire deodorization process, the vacuum must maintain a residual pressure of 0.13-0.8 kPa, and the direct injection volume is about 5%-15% of the processed oil weight. 30 minutes before the deodorization time reaches, turn off the heat transfer oil heating system. After the oil deodorization is completed, turn off the direct steam, open the cooling door, and cool the oil below 70°C, then turn off the vacuum pump, break the vacuum, and pump out the deodorized oil.


Process flow of peony seed peeling and cold pressing complete equipment:

Peony seeds—cleaning—measurement—peeling—separation of kernel and shell—drying—cold pressing—filtration—metering—cold pressing oil

Major equipment:

Cleaning screen, dryer, peeling machine, cold press, filter, etc.

main feature:

(1) Cold pressing complete equipment, mainly cold pressing, hot pressing is also possible.

(2) Using the dehulling and pressing technology, the pressed oil is light in color and low in acid value.

(3) The nutrients are fully maintained.

(4) The cold press has large output and low residual oil.

(5) The workshop production line is highly automated, and it can also be operated by touch screen or computer.

Process flow of peony oil refining complete equipment:

Crude oil-degumming-decolorization-filtration-deacidification and deodorization-crystallization-crystal growth-filtration-finished oil

Major equipment:

Centrifuge (or oil refining pot), decolorization tower, leaf filter, bag filter, combined deacidification and deodorization tower, spiral plate heat exchanger, crystallization tank, dewaxing filter, etc.