Rapeseed oil extraction production line
Rapeseed oil extraction production desolvation process, due to the wide boiling range of No. 6 solvent oil (60-90 ° C), its composition is more complicated. Although the solvent in the mixed oil is recovered by evaporation and stripping, the remaining in the oil High boiling point components are still difficult to remove, resulting in higher residual solubilization in leached crude oil. The operation of removing the residual solvent in the leaching oil is "desolving". The solvent residue in the oil after desolvation should not exceed 50 mg / L. At present, the most widely used method at home and abroad is the water vapor distillation desolvation method. The principle is that when water vapor passes through the leaching of the crude oil, the vapor-liquid surface contacts, and the water vapor is saturated with the volatile solvent and escapes according to its partial pressure ratio. To remove the solvent from the leaching oil. Because the volatility of solvents and oils varies greatly, steam distillation can remove volatile solvents from oils that are almost non-volatile. The dissolution is carried out at a higher temperature and equipped with a higher vacuum condition, the purpose of which is to: improve the volatility of the solvent; protect the grease from being oxidized at high temperature; and reduce the consumption of steam.
Desolvation process of rapeseed oil extraction production line
①Intermittent desolvation process of rapeseed oil extraction production line
Leaching oil after hydration or alkali refining – → desolvation – → cooling – → refined oil
Steps
The first step: start the vacuum pump to stabilize the vacuum of the dissolution system at about 7000 Pa, and suck the leaching oil into the desolvation pot, and the oil content is about 60% of the pot capacity.
Step 2: Turn on indirect steam and raise the oil temperature to 100 ° C. Direct steam with a pressure of about 0.1 MPa is used to fully turn the fat in the pan, and the indirect steam is used to raise the oil temperature to 140 ° C. At the same time, the dissolution begins.
Step 3: Depending on the quality of the leaching oil, the dissolution time is generally about 4 hours, during which the oil temperature is maintained at 140 ° C and the vacuum degree is about 8000 Pa.
The fourth step: 0.5 hours before the end of the dissolution, the indirect steam is turned off, and the direct steam can be turned off when the prescribed time is reached.
Step 5: Pass the desolved fat through a cooler, or cool it to 70 ° C in a pot, then break the vacuum and release it as finished oil.
Desolubilization equipment for rapeseed oil extraction production line
When used for dissolution, it is called a dissolution pot. There are other auxiliary equipment, such as W-type mechanical vacuum pump or soda water jet pump, atmospheric condenser, air balance tank, liquid foam trap, etc.

Model CZY30 --- CZY 3000
Output 30 tons --- 300O tons / day
Lowest price $ 50,000