After the rapeseed(canola) pressed and solvent extraction, the crude rapeseed(canola seed) oil will be transported to refining plant. Three different refining technology can be used in crude rapeseed oil refinery.

First, Continuous refining process

This process continuously performs four refining sections,including degumming and deacidification, decolorization, deodorization, dewaxing . The process has the advantages of high refining rate, low loss and high product quality.It is Suitable for large and medium refining workshop.

Second, Semi continuous refining process

It is a mixed process of batch production process and continuous production process. The refining rate is higher than that of batch production process. It is Suitable for medium and small oil factory.

Third, Batch refining process

Each refined sections operate intermittently.The process has the advantages of simple equipment,less investment,flexible process.It allow to be replaced raw oil varieties at any time.It is Applicable to small oil refineries or oil refineries with frequent oil.

Reference pictures of canola seed(rapeseed) oil refining plant.

Specification of crude degummed rapeseed oil:

Item	Standard
Smell and taste	The original smell and taste of edible oil
Moisture and volatile matter (%)           ≤	0.20
Insoluble impurities (%)                 ≤	0.20
Acid value (mgKOH/g)                 ≤	4.0
Peroxide value (mmol/kg)              ≤	7.5

Specification of refined degummed rapeseed oil:

Item	Standard
Color (Lovibond Cell 133.4mm)          ≤	R2.0  Y20
Smell and taste                        ≤	No smell and good taste
Transparence                         ≤	Clear and transparent
Moisture and volatile matter (%)          ≤	0.05
Insoluble impurities (%)                 ≤	0.05
Acid value (mgKOH/g)                ≤	0.20
Peroxide value (mmol/kg)              ≤	5.0
Smoke point (°C)                      ≥	215