Ocean offers turnkey solutions which covers all of the main processes of rice bran oil production line

Rice Bran Oil Pretreatment & Pressing Process
Rice Bran Oil Extraction Process
Rice Bran Oil Refining Process
Rice Bran Wax Purification Process

Solution Features

Rice bran oil is rich in nutrients such as oryzanol, plant sterols, and vitamin E, which are present in much higher quantities compared to other edible oils. Additionally, rice bran oil has a higher smoke point, which means it produces less smoke during frying and cooking, making it slightly healthier than other common cooking oils. The fatty acid composition of rice bran oil is balanced, with saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids in a roughly 1:1:1 ratio, close to the recommended standards of the World Health Organization, making it a high-quality, natural, healthy cooking oil.

The enzyme degumming process reduces phospholipid content from 560 ppm in the raw material to below 30 ppm, facilitating subsequent processing. The pre-bleaching, post-bleaching, and physical deacidification process reduces the acid value from 30 (KOH)/(mg/g) to below 3 (KOH)/(mg/g). Conventional bleaching and deodorization reduce the color red value from 4.0 (25.4 mm cell) to below 5.0 (133.4 mm cell) and the acid value to below 0.2 (KOH)/(mg/g). The one-step dewaxing and defatting process ensures that the premium rice bran oil remains clear and bright after 6-8 hours in a 0°C freezing test. The resulting premium rice bran oil maintains its nutritional content effectively, with oryzanol levels around 20,000 mg/kg.

Traditional refining processes can significantly affect the nutritional components such as oryzanol, plant sterols, and vitamin E by concentrating them in the soapstock. Based on such features of rice bran oil, Ocean has developed a four-step method to produce premium rice bran oil:

1. Enzyme Degumming Process:
Crude oil → Heating → Acid mixing → Acid reaction → Cooling → Alkali addition to adjust pH → Enzyme mixing → Enzyme reaction → Heating → Centrifugal separation → Drying → Degummed rice bran oil

2. Two-stage bleaching process + Physical Deacidification:
Degummed rice bran oil → Heat exchange → Heating → Pre-bleaching → Filtration → Post-bleaching → Filtration → Gas stripping → Heat exchange → Heating → Deacidification → Cooling → Deacidified rice bran oil

3. Conventional Bleaching + Deodorization:
Deacidified rice bran oil → Heat exchange → Heating → Bleaching → Filtration → Gas stripping → Heat exchange → Heating → Deodorization → Cooling → Deodorized rice bran oil

4. One-Step Dewaxing and Defatting Process:
Deodorized rice bran oil → Heating → Cooling crystallization → Membrane filtration → Premium rice bran oil

Ocean’s Unique Technologies and Advantages

Unique High-Efficiency Enzyme Degumming Technology:
This technology lowers phosphorus content in rice bran oil to as low as 35 ppm, reduces bleaching clay consumption, and increases refining efficiency by 15%.

Nutrient Preservation:
This refining process ensures maximum retention of oryzanol in rice bran oil (oryzanol ≥ 23,000 ppm).

High Acid Value Adaptation:
The process accommodates the high acid value of rice bran oil and provides excellent decolorization, producing high-quality rice bran oil (AV ≤ 0.1, R ≤ 3.5).

Energy Efficiency:
Energy-saving technology cuts steam consumption in the refining workshop by two-thirds, with steam use ≤ 49 kg/ton of oil and natural gas consumption reduced to 3.3 m³/ton of oil.

Eco-Friendly:
Odors from decolorization and deodorization are fully contained to prevent air pollution.

Simultaneous Wax and Fat Removal:
This method removes wax and fat together, improving efficiency, saving energy, and reducing refining losses.

Advanced Deodorization Tower Design:
The deodorization tower operates with a 65-minute deodorization time, with trans fats in the deodorized oil <1%, and a distillate collection rate of ≥99.5%.

Fully Automated Control System:
The system is reliable, mature, and well-established.

Inquiry