Extraction equipment

Oil Refining

In Physical Refining, Vegetable Oil is subject to distillation to remove free fatty acids. The alkali

treatment is completely avoided. This reduces the amount of waste water and eliminates production of soap. This process is becoming more popular.

Oil Chemical Refining

In Chemical Refining, Vegetable Oil is treated with caustic lye for separation of free fatty acids from oil. This is a conventional process that can be applied to all oils. A byproduct of alkali refining is soapstock, which is used for manufacture of low quality washing soap. Alternately, the soapstock can be treated with acid to recover fatty acids. The waste-water from refinery requires extensive treatment. This can be avoided by alternate Physical Refining process.

Oil Degumming Part

The purpose of Degumming Vegetable Oils is to remove Gums. All oils have hydratable and

non-hydratable gums.
a. Water Degumming: Hydratable gums are removed by treating oils with water and separating the gums. The gums can be dried to produce lecithin.
b. Acid Degumming: Non-Hydratable gums are removed by treating oils with acids and separating the gums

Oil Neutralizing Part

The purpose of Neutralizing Vegetable Oils is to remove Free-Fatty Acids (FFAs). Traditionally, FFAs are treated with caustic soda (NaOH). The reaction produces Soaps which are separated from the oil.

Because trace amounts of soaps remain in the oil, the oil is either washed with water or treated with Silica.

Zhengzhou Qi'E Grain&Oil Machine Co.,Ltd has applied the automatic control system with advancedness, security, reliability into the pretreatment, extraction, refining and fractionation in large oil plants. For its application in automatic control system, it can control the production in the entire workshop and monitor the operational status of each device by controlling the computer terminals in the room. One person only can operate the entire workshop, with efficient production management. It has reduced the production cost greatly and improved the management efficiency.