Sunflower Seed Oil Dewaxing Refining Equipment

Sunflower seed oil dewaxing refining equipment

The content of linoleic acid in sunflower seed oil is as high as 70% ~ 80%, and contains a variety of vitamins. It is an excellent oil integrating food nutrition and health care. Because sunflower seed shell and cell wall contain certain wax, during the oil production process, the wax is mixed with the oil due to the action of temperature and solvent, resulting in the turbidity of the liquid oil, which not only damages the appearance and taste of the oil, but also affects the quality of the oil. At the same time, the existence of wax in liquid oil hinders the absorption of nutrients in liquid oil by human body, thus greatly reducing the nutritional value of oil products. Therefore, the dewaxing of edible oil has attracted the attention of oil workers and entrepreneurs at home and abroad.

Expression of wax in oil body：

The existence of acyloxy groups in wax molecules makes wax have weak polarity, so wax is a lipophilic compound with weak hydrophilic groups. When the temperature is higher than 40 ℃, the polarity of wax decreases and dissolves in oil. With the decrease of temperature, the oil viscosity increases, the mobility of wax molecules in the oil decreases, and the polarity of ester bonds in wax molecules increases. Especially when the temperature is lower than 30 ℃, the wax grains slowly become larger and form dispersions in the oil, that is, turbid liquid. With the passage of time, the wax will slowly settle down, making the upper layer of the oil clear and transparent, and the lower layer of the oil present milky white viscous turbidity.

The core of dewaxing technology is based on the scientific crystallization and growth of wax, that is, how to make the wax crystal grow uniformly, and then try to effectively separate the wax crystal from the oil.

Dewaxing process:

Firstly, the crude oil shall be heated from normal temperature to above 80 ℃, and then slowly cooled to about 8 ℃. The purpose is to make the wax in the oil grow uniformly and make the crystal particles have certain compressive strength, and then the wax shall be removed by centrifuge or plate and frame filter press.Dewaxing process flow description：Deodorized oil → pre-cooling → crystallization and Crystallogenesis → filtration and separation → product oil

Main process:

Main parameter: 

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