Cooking oil solvent extraction process

Introduction of cooking oil solvent extraction process:
Cooking oil solvent extraction workshop:
Compared with pressing, solvent extraction has higher oil yeild and lower labor cost with better work environment and better-quality cake.
There are 2 types of solvent extraction methods, direct solvent extraction and pre-pressing extraction. Direct solvent extraction is always used for low-oil-content oil seeds, while pre-pressing extraction is used for high-oil-content oil seeds.

Cooking oil extraction chart flow

Cooking oil solvent extraction process as follows:

Cooking oil solvent extraction machine

1. Cooking oil extraction:
Cooking oil extraction is to extract oil from oil oil base or pre-pressed cake to oil mixture and meal.
The major equipment of this section is extractor, and extraction pot is always used in batch extraction while continuous extraction uses loop type extractor, rotocel extractor, crawler type extractor, etc.

Desolventizer toaster

2. Desolventizer toaster:
Meal from extractor consists of 25-35% solvent. And in order to recycle solvent and get better-quality meal, wet meal drying is necessary.

And high bed desolventizer toaster is always used in pre-pressed leaching meal, while DTDC desolventizer toaster is always used for direct extraction meal.

Cooking oil stripping tower

3. Cooking oil stripping tower/ oil stripper:

Cooking oil mixture consists meal powder, solvent and oil. This step is to separate these 3 ingredients by filtration, evaporation, and stripping.
The major equipments for this section in cooking oil solvent extraction process include filter, cyclone hydraulic separators, evaporator, stripping tower, etc.
We can help you design or choose the most suitable cooking oil solvent extraction process machinery according to your capacity.

Solvent recovery equipment

4. Solvent vapor condensation and recovery:
Mixed vapor from desolventizer toaster, evaporator, and stripping tower should first be condensed to liquid by condensers, and then separate solvent and water by water separator, and finally get recycled solvent to reuse in extraction.

We can offer whole line of cooking oil solvent extraction process machinery for different capacity. If you want to get more questions about cooking oil solvent extraction  workshop, please feel free to contact us, and we will give you a professional advice.