1.Screening:Removing the chaff and broken rice in the rice bran, in case of they will influence the oil yield and the desolvent of wet meal in the next process.
In the process of puffing section, the general requirement of impurity is less than 3%, and the requirement of crude fiber is about 8%.
2.Magnetic separation :Clearing the iron impurity which might be in the rice brain. Since in the process of puffing, the iron impurity will be harmful to the screw of extrusion machine,
affect the puffing effect. As the rice brain particles are small and poor liquidity, the iron impurities are always be wiped off by the magnetic barrels installed in the feeding port.
This project includes 30TPD rice bran pre-treatment line, 30TPD solvent extraction line, 6TPD rice bran oil refining line and 6TPD rice bran oil dewaxing line.
1.Rice Bran Pre-treatment:
Rice bran → cleaning → extrusion → drying → to extraction workshop
2.Rich bran oil solvent extraction:
In our design, the Extraction line is mainly made up following systems:
Oil Extraction system: for extracting oil from Expanded rice bran to get Miscella which is mixture of Oil and Hexane;
Wet Meal Desolventizing System: for removing Solvent from Wet Meal as well as to toast and dry Meal for getting proper finished Meal Product qualified for animal feed;
Miscella Evaporation System: for evaporating and separating Hexane out from Miscella under negative pressure;
Oil Stripping System: for thoroughly removing residual Solvent to produce standard Crude Oil;
Solvent Condensing System: for recovering and circulating use of Hexane;
Paraffin Oil Recovering System: further recovering residual Hexane gas remains in vent air by means of Paraffin Oil to reduce Solvent consumption;
3. Rice Bran Oil Refining：
Crude rice bran oil → degumming&dephosphorization → deacidification → Bleaching → deodorization →refined oil.
4.Rice Bran Oil Dewaxing:
Dewaxing means by use refrigerating unit,to remove wax from the oil.