Cooking Oil

Process overview

Cooking oils are made from corn, rapeseed, soybeans, etc. as raw materials. They go through an oil extraction process to extract oil from these raw materials, a refining process to make it suitable for cooking oil, and a manufacturing process of filling containers and transporting products, before the final product is shipped. Cooking oil is popular as salad oil and tempura oil.

Compression

Oil is collected by applying pressure with a press. HISAKA heat exchangers are used as preheaters.

Compression process

Extraction

The compressed lees produced by the pressing process contain a large amount of oil, which is eluted with a solvent (normal hexane).HISAKA heat exchangers are used as condensers and for heat recovery in the hexane recovery equipment.

Oil extraction process

Degumming

Crude oil contains gum (mainly composed of phospholipids).A small amount of water is added to the crude oil, and the gum is separated and removed with a centrifuge. HISAKA heat exchangers are used to heat the mixture.

Degumming process

Decolorization

In this process, oils and fats are brought into contact with activated white clay in a vacuum to adsorb, filter, and separate components with color. HISAKA heat exchangers are used to heat the mixture.

Decolorization process

Filtration and Dewaxing

This is the process of cooling the oil and fat to precipitate, filter, and remove the components that solidify (wax).HISAKA heat exchangers are used as coolers.

Filtration and dewaxing process

Deodorization

The oil and fat are brought into a high-temperature, high-vacuum state and blown with water vapor. This process removes odorous components. HISAKA heat exchangers are used as coolers for barometric condensers.

Deodorization process

Products

Oil stored in the product tank is filled into a container and shipped as product. HISAKA heat exchangers are used as heaters for filling the containers.

Product process