Cottonseed Oil Production Line

Cottonseed oil-making process usually uses Cottonseed Oil pre-pressing Machine, Cottonseed Oil Extraction Machine, and Cottonseed Oil Refining Machine. Cottonseeds can be once-pressed and then sent to the cottonseed oil refinery plant directly. For a capacity of more than 20 tons per day, usually, the solvent extraction method is usually adopted with cottonseed oil pre-press used to extract part of the oil. The machine has a large capacity and the cake has a low residual oil rate and is easy for solvent penetration. The pre-pressing and extraction method produces cottonseed oil and crude cottonseed oil refining. The pretreatment steps mainly include cleaning, shelling and crushing, steaming and frying, and pressing. Cottonseed oil refining can remove peptidic impurities, free fatty acids, pigments, odors, and other impurities in cottonseed oil, and improve the stability of cottonseed oil.

Cottonseed oil production line

The Production Process of Cottonseed Oil

Cottonseed Oil Processing

Cottonseed Pretreatment & Pre-pressing

Cottonseed Oil Pressing Process
  • The pressing efficiency
    of the oil press
  • The stability of the
  • Speed up the
    oil output

Cottonseed Oil Pressing

Oil pressing is to press the cottonseed kernel into thin slices to increase the surface area of the oil, destroy its cell structure, shorten the oil path, and speed up the oil output. The pressing efficiency of the oil press and the stability of the equipment are the keys to the oil pressing process. The oil press produced by our company has the characteristics of large output, low cake residue, and high cake quality.


Cottonseed Oil Extraction

After pretreatment and cold pressing, the material is transported to the extraction workshop. Oil extraction is using the organic solvent to extract oil from the pre-pressed cake inside the oil extractor. Multiple oil extractors such as loop type, rotocel, and towline extractors can be used for the cottonseed oil extraction plant. After oil extraction, miscella and the solvent containing wet meal are obtained. The miscella is pumped into the hydrocyclone to remove the fines and then the miscella enters the miscella tank in the cottonseed oil extraction plant.

Cottonseed Oil Extraction

Cottonseed Oil Refining Process

  • Cottonseed oil degumming
  • Cottonseed oil deacidification
  • Cottonseed oil decolorization
  • Cottonseed oil deodorization
  1. Cottonseed oil degumming and hydration

    Cottonseed oil degumming

    The colloidal impurities in crude oil are mainly phosphorus. The presence of colloids such as phospholipids not only reduces the quality of oil but also promotes transitional emulsification between oil and alkali in the alkali refining deacidification process, increasing the difficulty of separation of saponins and aggravating the loss of neutral oil. Therefore it should be removed first.

  2. Cottonseed oil deacidification

    Cottonseed oil deacidification

    Oil deacidification mainly removes free fatty acids in crude oil, as well as a small amount of colloids, pigments, and trace metal substances in the oil.

  3. Cottonseed oil decolorization

    Cottonseed oil decolorization

    The color of the oil and some other impurities must be decolorized to meet product quality standards. At the same time, it provides more favorable conditions for deodorization and refining. Decolorization must meet the final required color index of the product.

  4. Cottonseed oil deodorization

    Cottonseed oil deodorization

    The purpose of oil deodorization is to remove odor-causing substances and other easily volatile substances in the oil, improve the odor and color of the oil, and improve the stability of the oil.

    Cottonseed oil refinery machines are divided into three types: batch type, semi-continuous, and full-continuous. They use different capacity oil refining methods, but the final cottonseed oil is all qualified with the standard.


Cottonseed Oil Fractionation

Cottonseed oil fractionation plants can obtain liquid oil and solid fat by cooling crystallization and solid-liquid separation. The plant has the features of advanced technology, fully automatic, high liquid oil yield, and high solid fat purity. Cottonseed oil contains a fair amount of saturated fatty acid and thus has a high melting point. At low temperatures, part of triacylglycerol crystallizes and precipitates, which restricts the application, transportation, and trade of cottonseed oil. By cottonseed oil fractionation, liquid oil and solid fat are obtained. The liquid oil can be used to make mayonnaise and salad dressing. The solid fat can be used to manufacture frying oil, margarine, shortening, cocoa butter substitutes, etc.

Cottonseed Oil Fractionation

Features Of Cottonseed Oil Processing

Cottonseed Oil Production Video

Cottonseed oil processing plant

The traditional cottonseed oil production process is pre-pressing, extraction, or pressing. Since cottonseed has a high shell content and contains gossypol, it is necessary to peel the shells and use high-moisture steaming and frying during the pre-treatment process to reduce the gossypol content in cottonseed oil.


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