Why crude cooking oil should be refined with oil refinery plant?

What is Cooking Oil Refining? And why crude cooking oil should be refined with oil refinery plant?
Crude oil Extracted from oil pressing machine or solvent extraction plant inevitably contains impurities. To make the standard edible oil, the impurities must be taken out; such a process is called “Refining” Oil refinery refers to a series of refining processes that can remove FFA, gums, waxes, phospholipids and free fatty acid (F. F.A.), pigment, off-flavor and other impurities in the oil. Edible oil refinery is necessary for vegetable oils & fats or animal oils & fats so they can be used for cooking and frying foods.

Whole set cooking oil processing machine

What’s Cooking Oil Refinery Process?
Cooking Oil Refinery Process
★ Degumming: Remove gums in the crude oil to improve oil edibility, storage and do well to downstream neutralizing section.
★ Neutralizing: Remove Free-Fatty Acids (FFAs) with caustic soda (NaOH). Soap stock is generate in this process.
★ Decolorizing /Bleaching: Remove color pigments contained in oils.
★ Deodorizing: Remove disagreeable flavor and odors that are naturally present or created during processing under high temperature.
★ Dewaxing (Optional): Oils like sunflower oil or maize germ oil (corn oil) have waxes present in them. At low temperatures these waxes give a hazy appearance to the oil. So in extremely cold areas, dewaxing should take into accout when processing these oil seeds.

Cooking oil refinery plant

Cooking Oil Refinery Plant designed by our factory has the follow features:
★ Wide application for oil bearing seeds.
★ Less investment but with full refining function.
★ Change different oils easily.
★ Easy to install and operate.
★ Light weight and movable.

Main Machines in Small Oil Refinery Line
Heat Conduction Furnace: 1 set Offer enough thermo for the refining sections.
Steam Generator: 1 set Produce steam for the workshop
Refining Pot: 2 sets Remove the gum, phosphoric acid etc,
Decolorizing Pot: 1 set Remove the color from neutralized oil
Deodorizing Pot: 1 set Remove the solvent, smell, water from decolorized oil
Other Auxiliary Equipments: Hot water Tank, Bleaching earth Tank, Air compressor, pumps, filters, Valves, Electricity Control Cabinet, etc.