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Peony seed oil refining equipment

September 10, 2021

Peony seed oil is a new type of oil crop. Peony seed has a high oil yield per unit area (3.4 times that of soybeans or 1.4 times that of rapeseed), the highest overall planting benefits (more than 10 times that of soybeans or rapeseed), and international competitiveness The strongest (peony brand advantage), so the development of peony seed production has a positive effect on the use of limited arable land to efficiently increase the oil supply capacity, increase farmers' income, and resist the impact of foreign oil on the domestic market.

But at present, the peony seed deep processing industry is far behind the market demand, such as the output of peony seed oil, the output of peony flower tea, the output of peony wine, and so on. The state encourages individuals to invest in the peony seed deep processing industry, improve the level of mechanization of production and processing, and through intensive processing, increase efficiency for enterprises, increase income for farmers, and create good oil for the market.

At present, there is still a large gap in domestic edible oil demand, and the market demand for peony seed oil is increasing day by day. Peony seed oil refining equipment is a very important component in the production process of edible oil plants.

 refining equipment

The purpose of peony seed oil refining equipment

The other ingredients in oils except triglycerides are called impurities.

The purpose of refining is to remove impurities, maintain the biological properties of oils, and retain or extract useful substances. In fact, refining does not remove all impurities, but selectively removes impurities.

According to the composition and properties of impurities in crude oil, it can be divided into three categories:

(1) Insoluble solid impurities, such as silt, cake powder, fiber, clay, catalyst, etc.

(2) Peptizing impurities, such as free fatty acids, sterols, vitamin E, pigments, vitamins, gossypol, etc.

(3) Volatile impurities, such as moisture, alcohols, hydrocarbon solvents, smelly substances, etc.

Most impurities are detrimental to the quality and storage safety of oils and fats. For example, moisture not only affects the transparency of oils but also promotes the hydrolysis and rancidity of oils; free fatty acids affect the flavor and promote deterioration; phospholipids can make oils turbid and produce black precipitates when heated. Foaming, bitterness, etc.; various pigments directly affect the color of the oil, and also promote the rancidity of the oil; the presence of colloids, sulfur and phosphorus compounds, soapstock, and heavy metal salts makes it difficult for subsequent processes such as steam stripping to deacidify.


The six steps of peony seed oil refining and the process flow of oil refining equipment


(1) Degumming: removing phospholipids, mucus, resins, proteins, sugars, trace metals, etc. in the crude oil, generally using hydration and acid refining methods.


(2) Deacidification: Use food grade lye neutralization method to remove free fatty acids, acid pigments, sulfides, insoluble impurities and trace metals in the oil.


(3) Dehydration: Use heating and vacuum drying to remove the water in the refined oil.


(4) Decolorization: Use adsorbents such as clay, aluminum silicate, and activated carbon to remove various pigments, colloids, oxides, etc. in the oil.


(5) Deodorization: The principle of vacuum stripping is used to remove low-molecular odorous substances, free fatty acids, monoglycerides, glycolipids, sulfides, and thermal decomposition products of pigments in the oil.


(6) Dewaxing or degreasing: mainly use freezing, crystallization or winterization crystallization, and fractionation to remove wax or solid fat in the oil.