Huatai Edible Oil Refining – From Crude Oil to Grade 1 Standard

Edible oil refining is the essential process that transforms crude oil into safe, stable, and market-ready cooking oil. Crude oil obtained from pressing or solvent extraction contains impurities including phospholipids, free fatty acids, pigments, and odorous substances that make it unsuitable for direct consumption . Through systematic refining, Huatai's solutions produce pure, clear Grade 1 oil while preserving valuable nutrients like Vitamin E and plant sterols.

The Four-Stage Refining Process

1. Degumming – Removes phospholipids and gums by adding phosphoric acid or hot water, followed by centrifugal separation . This prevents cloudiness and improves oil stability.

2. Deacidification – Eliminates free fatty acids (FFA) that cause sour taste and rancidity. Two methods are available: chemical refining (alkali neutralization) for most vegetable oils, and physical refining (steam distillation) for high-acid oils like palm and coconut .

3. Decolorization – Bleaches oil with activated clay under vacuum to adsorb pigments (chlorophyll, carotenoids). This produces crystal-clear oil .

4. Deodorization – High-temperature (230-260°C), high-vacuum steam stripping removes volatile compounds that cause unpleasant odors and flavors .

For oils with high wax content (sunflower, rice bran, corn), an additional dewaxing/winterization step is integrated to prevent cloudiness at low temperatures .

Why Choose Huatai?

Huatai Group brings 38+ years of edible oil refining expertise and has served 70+ countries worldwide. The company is recognized as a National "Little Giant" Enterprise and Green Factory, holding 56+ national patents . Our refining systems feature:

• PLC automation – consistent quality, one operator per shift
• Energy-saving design – heat recovery reduces consumption by 15-20%
• Multi-oil compatibility – soybean, palm, sunflower, peanut, rice bran, cottonseed
• Custom capacity – batch (1-20 TPD), semi-continuous (20-50 TPD), fully continuous (50-500+ TPD)
• Turnkey delivery – design, manufacturing, installation, and training