Rice bran oil refining process and refining methods

Refining is an essential process for a complete rice bran oil production machine because there are still some impurities such as phospholipids, FFA, pigment, odor, etc. in the crude oil.We provide whole set of rice bran oil refining machine for the world customers. After rice bran  oil refining machine, the refined oil has high quality and is good for long time storage.

Large scale rice bran oil refienry plant

Depending on the level of automation, rice bran oil refining machine can be divided into the following three categories:

low cost mini rice bran oil refining machine

Batch Refinery (1-20TPD)1TPD，2TPD， 3TPD， 5TPD，10TPD，15TPD, 20TPD, 30TPD. (Suitable for mini and small scale rice bran oil mill )

medium scale rice bran oil refining machine

Semi-continuous Refinery (10-50TPD)15TPD，20TPD.30TPD (Suitable for middle-sized rice bran oil refinery factory)

Large scale rice bran oil refining machine for industrial business plan

Continuous rice bran oil refining (50-600tpd) 30TPD ,50TPD,100TPD,200TPD,400TPD (Suitable for industrial scale rice bran oil mill)

Small scale rice bran oil refining machine

Recommed reading: Cooking oil refining process  

Crude rice bran oil is mainly further processed into edible oil for food purpose. To meet the international industry’s standards for edible oil, the crude rice bran oil produced by rice bran oil mill machinery should be refined in rice bran oil refinery plant. Rice bran oil refining process mainly includes rice bran oil degumming, rice bran oil deacidification, rice bran oil bleaching and rice bran oil deodorization.

Crude rice bran oil refining process flow chart:

How to refine crude rice bran oil to refined edible oil?

The refining process removes water, odouriferous matter, phosphatides, free fatty acids and other impurities including dirt and traces of metals from rice bran oil mill. After processed in rice bran oil refinery plant, the final oil product is a kind of premium edible oil of consistent quality which not only satisfies customer requirements and industry’s standards in respect of Iodine Value, FFA, flavor, color, melting point, peroxide value, impurities and moisture.

Basic Steps of rice bran oil refining machine:

The first step is degumming

In degumming process, remove the gelatinous substances such as phospholipids and proteins in the crude edible oil to obtain degummed edible oil.

The second step is deacidification

The acidic substance not only affects the taste of the vegetable oil, but also affects the quality of the vegetable oil. What's more, according to edible oil standards, the acid price index is one of the most important indicators for measuring the quality of edible oil.(Acid value shall not be more than 0.5)

The third step is decolorization

Decolorization process is with the adsorption of white clay to remove the dark color in crude vegetable oil, then make the oil clear appearance, light color.

The last step is deodorization

In the deodorization process, with high temperature evaporation principle, the vegetable oil is heated to above 230 ° C, to reduce the peroxide value of the vegetable oil, at the same time, a small amount of pigment and free fatty acid are also able to be removed. Deodorization can make sure the quality of the reined vegetable oil, which is also an important steps of making refined vegetable oil.

Successful Projects of  rice bran oil refinery projects:

The following is some onsite photos of our edible oil refinery plant projects (rice bran oil refinery plant projects). Feel free to contact us if you are interested!

Rice bran oil refinery plant projects have successfully installed by Henan Doing Company ( Click here to view larger )

Physical Refinery Vs Chemical Refinery

Rice bran oil refining process flow chart

What is physical refining of palm oil?

Physical refining is also known as steam refining. In degumming process, it utilizes citric acid or food grade phosphoric acid to remove natural gums in the form of phosphatides. Then, in bleaching process, under vacuum, Fuller’s Earth is used to remove colouring matters and adsorb any metal ions. The deacidification and deodorization process is under high temperature and low pressure. By used of live steam, the FFA is stripped of. The steam is then recovered together with the entrained oil is as rice bran fatty acid distillate. The off-flavors and odours can also be removed from the crude rice bran oil in the steam distillation process.

Physical rice bran oil refinery process is the most common used type in rice bran oil processing industry. It is featured of low production cost, high efficiency, simple production process and low effluent load.

Recommed reading:  Physical and chemical cooking oil refinery machine

What is chemical refining of rice bran oil?

Chemical refining of rice bran oil is the traditional method used in past centuries. The main purpose of chemical refining is to remove the FFA by an alkaline solution and at the same time remove other impurities.This chemical refining of rice bran oil can be used for refining almost all crude vegetable oils, such as soyben oil, peannut oil, cottonseed oil, rapeseed oil, sunflower oil, palm kernel oil and so on.

The factors that influence the deacidification in rice bran oil chemical refining process:

1.The types and amounts of alkali;

2.The lye concentration;

3.Operating temperature;

4.Operating time;

5.Operating of mixing and stirring;

6.The influence of impurities;

7.Operating of oil soap separation;

8.Operating of washing and drying.

If you are planning to set up a rice bran oil refinery plant, rice bran oil mill, you are in the right place! Henan Doing Company is a professional manufacturer of rice bran oil refinery plant, which is able to use chemical refining method and physical refining method. The process steps inrice bran oil refining process can be adapted in accordance with the crude vegetable oil quality to give a good final oil quality with acceptable oil losses. Our engineer can help you to design the rice bran oil refinery plant for you. Detail indformation about rice bran oil refining process, rice bran oil refining technology, welcome to contact us.