batch oil refinery

Batch oil refinery is quite suitable for small capacity vegetable/edible oil making plant, which capacity ranges from 1TPD to 20TPD. These batching stages are Degumming, Neutralizing, Decolorization and Deodorization.

Continuous refinery is another method used to purify vegetable oil but in this case we will focus more on the batch oil refinery stage to stage. The aim of batch oil refinery is to remove impurities such as wax, gum, unfiltered proteins and free fatty acids from crude oil and get pure vegetable oil as the end product. This process also includes removing coloring and smells from the oil ensuring high quality end product. The process happens in stages hence the name of the machine used is batch oil refinery plant.

Batch Oil Refinery Plant Workshop View

Merits of Batch Oil Refinery Plant:

• Wide application: suitable for various crude vegetable oil, even animal oil, fish oil, etc.
• Low investment: need less investment, and cost recovering time is also short.
• Less land request: even 50m2 workshop will be ok.
• Easy operation: After our short time professional training, your workers can operate the machines well.

4 Main Refining Processes for Batch Oil Refinery

1.    Degumming Process:Some impurity, such as Phospholipid, gum, and protein, can be dissolved into oil when there is no water, but once there is water in oil, these impurities can be dissolved into water. So, in degumming section, we use the hot water to wash crude oil for two-three times to remove these impurities.

2. Neutralizing/Neutralization Process：The crude oil is fed into the neutralizer and mixed with small amounts of degumming agent such as phosphoric acid to help remove gums. Free fatty acids are removed from the oil by adding caustic soda and heating it at 60˚ then stirring the mixture. Heating helps caustic soda to react with the fatty acids to form the soap material. Once the soap material settles in the neutralizer machine, it is collected with soap pans while the oil is washed with water to remove any traces of soap or any alkaline particles.

3. Decolorizing Process：　The neutralized oil requires bleaching to get rid of colors. This is done by adding the oil in a bleacher machine whereby it is heated to remove any moisture it might have and then mixed with earth bleach and activated carbon. These two properties absorb any colors after which the oil is passed through a filter to separate oil from earth bleach and carbon. The result is golden light oil.

4. Deodorizing  Process：The golden light oil has unpleasant odors which result from materials such as aldehydes, ketones, tocopherols and phenols among other odiferous elements. Deodorizing process helps remove these odors by adding the oil in the deodorizer and heating it above at very high temperature ranging from 110˚ to 220˚ and under very high vacuum. This process helps get rid of all odors.

Batching oil refinery process has a number of advantages which include

• Getting useful by products such as the soap material
• The process gives a clear, brilliant and edible pure end product
• After deodorizing all smells are got rid of giving you’re a pure product
• The process involves taking the oil through high heating process which removes any present impurity
• The process is simple and even though used for small scale production, it produces high quality oil.

Some vegetable oils such as corn meal, rice bran, cotton seed oil and sunflower oil require being taken through an extra process of dewaxing which help remove wax from the oil. This process improves the brightness and transparency of the oil.