Sunflower oil is a healthy edible oil known for its high content of linoleic acid. According to Professor Cao Wanxin from Xi’an Oil Research and Design Institute of the State Food Reserve Bureau, in the 21st century, cardiovascular and cerebrovascular diseases such as coronary heart disease, cerebral apoplexy, cerebral thrombosis, arteriosclerosis, high blood pressure and other diseases have increased. The above symptoms have been greatly improved. Sunflower oil is one of the most excellent healthy oils. Sunflower oil has become the first choice of consumers and cooks. The consumption of sunflower oil in the world ranks third among all vegetable oils.

Sunflower seed oil process description: After the sunflower seeds are cleaned, peeled, embryo rolled, steamed and fried, oil squeezed in the pretreatment workshop, the pre-pressed sunflower seed cake is sent to the extraction workshop for extraction. The refined oil is obtained after pre-pressing and extracting crude oil through degumming, deacidification, decolorization, deodorization, and dewaxing processes.

Sunflower Seed Pretreatment and Pre-squeezing Complete Project

Sunflower seeds use the dehulling and pre-pressing process. The sunflower seeds are first cleaned, dried, and then homogenized in the steel silo for a few days before processing. The water content is 7-8%, and the hardness and strength of the shell are uniform.

During processing, the sunflower seed material is screened, wind-separated and magnetically separated, and then enters the sheller to peel the shell, and then the shell and kernel are separated in the shell and kernel separation screen, or it can be directly pre-extruded and leached without shelling. The produced meal fiber The content is higher and can be used as cattle feed. After the shell and kernel are separated, the moisture and temperature of the kernel are adjusted by a softening pot, and then the kernel is rolled with a embryo rolling machine. After being steamed in a frying pan, it is pre-squeezed with a screw pre-press, and the crude oil squeezed is filtered and squeezed The crude oil is sent for refining. The pressed cake is sent to the leaching workshop for leaching.

Sunflower seed cake leaching complete equipment

Process flow: pre-pressing sunflower cake → leaching → filtering → evaporation → steam stripping → leaching crude oil

Process description: The sunflower pressed cake in the pre-press workshop is transported to the extraction workshop, and enters the extractor through the 1# buried scraper conveyor and sealed auger. With the operation of the extractor, the mixed oil of decreasing concentration is sprayed, and finally sprayed Fresh solvent reduces the oil content in the material to less than 1%. Wet meal enters the steaming machine from the 2# buried scraper conveyor and sealed auger, sprays direct steam to remove the solvent, and transports it to the meal store for packaging. The mixed oil obtained by solvent leaching grease is filtered, precipitation of mechanical impurities, evaporation, steam stripping and other processes to remove the solvent to obtain leached crude oil.

The mixed oil adopts negative pressure evaporation technology, using the secondary steam of the steam-off machine as the heat source. The first steaming, second steaming and stripping all work under vacuum, which reduces the evaporation temperature, improves the quality of crude oil, and saves steam consumption. .

The solvent vapors from steaming off, first steaming, second steaming, steam stripping, and leaching are recovered through the corresponding condensers. The condensate is concentrated in the liquid collecting tank, and after entering the integrated container for water separation, the solvent is pumped into the extractor and enters the next cycle. , The separated water will be discharged after being boiled in the cooking tank. The free gas of each condenser enters the balance tank, then enters the final condenser, and the tail gas is vented after the solvent is recovered.

Main equipment: extractor, evaporator, meal trap, long tube evaporator, inclined plate stripper, condenser, integrated vessel, cooking tank, exhaust gas absorption tower, etc.

Main features: The equipment adopts negative pressure evaporation process, with low residual oil, low dissolution consumption, good quality of leached crude oil, and light color.

Sunflower seed crude oil has a lighter color. The process of degumming, deacidification, decolorization and deodorization is basically similar to that of soybean oil. After dewaxing, it can reach the national first-class oil standard.

Process flow: crude oil → degumming → decolorization → filtration → deoxygenation → heat exchange → heating → deacidification and deodorization → heat exchange → cooling → crystallization → crystal growth → filtration → refined oil

Process description: After the crude oil is preheated, add light alkali to make the gum and some free fatty acids in the oil form soapstock, and then separate the soapstock, then add hot salt water to the oil to wash, and separate the soap water. Degumming is completed by the same washing once or twice. The degummed oil enters the decolorization process, adds activated clay to decolorize in the decolorization tower, and then is pumped into the leaf filter for filtration. After polishing, the filtrate enters the next process. After the leaf filter is blown dry, the waste clay is discharged through vibration. The decolorized oil is pumped into the gas separator for vacuum deoxygenation, and then the oil is pumped into the oil-oil heat exchanger and deodorized oil for heat exchange preheating, and then enters the heater when it is heated to about 250 ℃ and enters the combined deacidification and deodorization tower in high vacuum Deacidification and deodorization are carried out in the state to maximize the removal of fatty acids, odors and other volatile substances in the oil. The fatty acid mixed steam is discharged from the top of the tower into the fatty acid trapping system and sold. The oil is drawn from the bottom and pumped into the heat exchanger to exchange heat with the oil to be deodorized, and then cooled to obtain the deodorized oil. The deodorized oil is cooled and crystallized in a crystallization tank and then transferred to the crystallization stage. The oil after crystallization and crystallization is pumped into a filter to separate wax and grease to obtain refined oil.

Sunflower seed oil processing equipment refining section main equipment: centrifuge (or oil refining pot), decolorization tower, leaf filter, bag filter, combined deacidification and deodorization tower, spiral plate heat exchanger, crystallization tank, dewaxing filter, etc.

Process characteristics of the refining section of sunflower oil processing equipment: using physical refining technology, equipped with an advanced combined deacidification and deodorization tower, with high automation, low production costs, and low loss. The dewaxing and degreasing process is designed, and the quality of the refined oil can reach the national first Level standards.