Batch type edible oil refinery plant and continuous edible oil refinery plant

• September 13, 2018 18:15
• Oil refining process
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Edible Oil refinery process is to refine the crude vegetable oil, get rid of the deleterious impurity, then get the high quality edible oil. According to the different capacity and edible oil refining technology, the edible oil refinery plant can be divided into batch type edible oil refinery plant and continuous edible oil refinery plant. Basic process of edible oil refinery plant is same.

Batch type edible oil refinery plant introduction:

Batch type edible oil refinery plant with capacity 1-20tpd

In batch edible oil refinery process or vegetable oil refinery process, a measured quantity of oils is processed in sequence of neutralizing, bleaching & deodorizing. For edible oil refinery plants capacity from 1 to 20 tons per day, batch type edible oil refinery process is recommended being low cost and easy to operate.

Crude edible oil obtained from cooking oil expellers or edible oil solvent extraction plant contains foreign impurities such as mucilage, gums, coloured & unfiltered matter from the seed. Also Free Fatty Acids (F.F.A.) which tend to deteriorate the oil on storage, thus making it unfit for edible purpose.

Batch type edible oil refinery  process flow chart

The batch type edible oil refinery process consists of following section :
Neutralizing / Degumming
Bleaching
Deodorizing

First Stage of edible oil refinery process is to Remove Free Fatty Acids(F.F.A.) wih caustic Soda Treatment called Neutralizing Process Thereafter further processed in the bleaching section under vacuum and treated with bleaching earth and activated carbon for removing colour .Finally it will be Deodorized under high vacuum and high temperature to remove the odour from the oil. The Edible obtained in a batch type edible oil refinery plant is of good quality meeting all requirement
of International Standard. However in case of Sunflower and rice bran oil, there is one more process of Dewaxing after bleaching Process.

The equipment involved are Neutralizer, Bleacher, Deodorizer, Heat Exchanger, High & low vacuum equipment & Filters. Henan Doing Company edible oil refinery plant with batch type edible oil refinery process have been operating at number of places, processing variety of vegetable oils.

Continuous edible oil refinery plant introduction:

Continuous edible oil refinery plant with capacity 50-600tpd

Basic process of continuous edible oil refinery plant is same in both batch & continuous edible oil refinery. Only difference is instead of a measured batch, crude edible oil is processed continuously with constant stream of flow. In between required utilities & chemicals are added continuously in measured quantity. Crude edible oil from obtained from cooking oil expellers, edible oil solvent extraction plant contains foreign impurities such as mucilage, gums and unfiltered proteinous matter from the seed. It also contains gums which making it unfit for edible purpose.

Basic stages of the continuous edible oil refinery process are as below:
Neutralizing
Bleaching
Dewaxing & Deodorizing


Degumming and neutralization process:

Cotinuous edible oil refinery process-degumming & neutralization process

The crude edible oil is pumped to Neutraliser from edible oil mill plant or storage tank & first it is treated with weak solution of phosphoric acid or other suitable degumming agent for removing gums.
Thereafter oil is further treated with measured quantity of alkali (NaoH) depending upon free fatty acid (F.F.A.) in crude oil. In this process soap will be separated.
Next process is hot water wash to the oil to remove traces of soap particle &free alkali.
The oil obtained will be light in colour, free from soap stock & called as washed Neutralised Oil.

Bleaching process:

Cotinuous edible oil refinery process-decolorization process

In this process excess colour from the oil is removed. The neutralized washed oil is pumped into the Bleacher vessel operating under vacuum.
The oil is first heated to remove excess moisture and thereafter it will be treated with predetermined quantity of bleaching earth & activated carbon.
Thereafter the oil will pass through a filter media (Pressure leaf / Filter press) to separate spent bleach earth and bleached oil.
The oil will pass obtained after bleaching process is light in colour & appearance of oil will be clear golden in colour

Dewaxing and winterizing (fractionation) process:
A very simple requirement of this process is to produce Clear, Brilliant refined edible oil and to meet certain specifications of Cloud Point.

Sunflower oil,  corn oil and Rice Bran oil normally contain waxes compared to other oil. Therefore these oils are subjected to de-waxing process called Winterization Plant, to remove waxes from oil and to produce sparkling good quality edible oils.

To remove the wax, the oil is first processed in Crystaliser where it is cooled by Chilled water circulation. Where the wax is converted into crystal form and there after this will be pass through the filteration process. Now, the wax is separated and the de-waxed oil is collected.

Decolorizing process:

Cotinuous edible oil refinery process-deodorization process

This process in continuous edible oil refinery plant removes odour from the oil to improve the quality and self-life of oil.
The bleached oil is charged to deodorizer directly or through heat exchanger and is heated at high temperature and also under high vacuum in deodorizer vessel to obtain odourless clear oil.
Once the decolorization process cycle is complete the oil obtained will be odourless & light in colour.
After cooling it will pass through polishing filter to obtained sparkling light colour & odourless oil for packing, which will be used as edible oil.

Dry fractionation process:

Palm oil fractionation process flow chart

Henan Doing Company know-how provides a Low Operating Cost Fractionation Plant which gives high olein / soft stearin yields at established control i.e. PLC (automation) for efficient working and reliability of the plant.

The separation of Stearin and Olein  is continuously done on Rotary Vacuum Drum Filter and its principle is simple, whereas Crystallization process involves a perfect technique to develop and grow the particles size for easy smooth separation of Stearin and Olein

Henan Doing Company vegetable oil production machine is ideally suitable to extract and produce oil from any kind of oil seeds such as peanut / groundnut, sesame, copra, linseeds, sunflower, castor seed, cotton seed, palm kernel etc. Cooking oil production machine consists of cooking oil pretreatment & pre-presing machine ,cooking oil solvent extraction plant and cooking oil refining machine. Machinery available at small scale and big scale as per buyer's need. Feel free to contatct us, if you are interested in batch type edible oil refinery plant and continuous edible oil refinery plant. Cooking oil production machine business scope as follows: