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 migLD 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.
3.Quenching and tempering :it is the process of preheating so that to improve the temperature of the rice bran before puffing. After quenching and tempering the temperature will be controlled at 65--75 °C, and the moisture will be controlled at 10 ~12%. Thus, on the one side, it can increase the output of the extrusion machine, and on the other side, it can improve the quality of the puffed rice bran.
4.Puffing: the rice bran is injecting high pressure steam and high temperature water through the extrusion machine, so that it can improve the temperature and moisture in the extrusion machine,and can also form the high pressure to process the rice bran. All these can make the the rice bran become porous columnar structure from the original pulverized state.All these effectively passivate the activity of various of enzyme in the rice bran, and destroy the fat layer structure, so that it will be easier for the oil yield.
5.Drying:The moisture of puffed material comes from the extrusion machine is too big and the temperature is too high for direct leaching, the must be experience to process of drying and coo-ling, thus the moisture will reach 7%--9%, and temperature will reach 50-55°C. After puffing, the rice brain are usually dried and cooled by plat dryer.
rapeseed oil extraction machine
The feature of rapeseed oil extraction machine
1. Adopt stainless steel fixed grid plate and increase the horizontal grid plates, which can prevent the strong miscella from flowing back to the blanking case, so as to ensure good extraction effect;
2. The rotocel extractor is driven by rack, with unique rotor of balanced design, low rotating speed, low power, smooth operation, no noise and quite low maintenance cost;
3. The feeding system can adjust the rotating speed of airlock and main engine according to the feeding quantity and maintain a certain material level, which is beneficial to the micro negative pressure inside the extractor and reduce the solvent leakage.
4. The advanced miscella circulation process is designed to reduce the fresh solvent inputs, reduce the residual oil in meal, improve the miscella concentration and save enerLD by reducing the evaporation capacity.
5. The high material layer of the extractor helps to form immersion extraction, reduce the meal quality in miscella, improve the quality of crude oil and reduce the evaporation system scaling.
6. Specially suitable for the extraction of various pre-pressed meals.
The Main parts of rapeseed oil extraction machine
(1) Solvent pumps:continuously spray solvent to the rotary-type extractor
(2).Roary extractor:Spray and soak the pre-pressed cake with solvent so that oil fats can be dissolved in
solvent(form miscella). After processing, you can get wet meal and micella (mixed oil).
(3)DTDC:Used to separate the solvent from the wet meal.
(4). Miscellanous tank 1st: pump the miscella (oil with solvent) in to the miscella 1st , and then add 10%
saline water to it.
The phospholipid and impurities in the miscella will react with the saline water, at last the reactant precipitate,
reaching the goal of purifying.
(5). Miscella tank 2nd: the purified miscella will be pumped into it.
(6). Miscella stripping:it will remove the remaining solvent in miscella. And the solvent will be discharged to
condenser for recycling.
(7). condensers:used to cooling the solvent gas separated from the wet meal and miscella for recycling.
The process of rapeseed oil extraction machine
(1) The plant seed oil (for pretreatment) is sent to rotary extraction by the scraper conveyor. The plant seed oil will extracted by the solvent or mix oil. After this step, we will get meal and mix oil
(2) Meal is send to toaster. Through the toaster, the solvent in the meal will seperate from the meal. The solvent goes to condenser and is recycled to rotary extraction.
(3) After the mix plant seed oil from the rotary extraction enters into 1st evaporator and 2nd evaporator, most of the solvent in the plant seed oil is separated.
(4) The mix plant seed oil from 2nd evaporator goes to stripping tower and almost all the solvent is separated. From the stripping tower, we can get crude plant seed oil and solvent. The solvent is sent to condenser and is recycled to rotary extraction.
our processing workshop rapeseed oil extraction machine
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Shandong Leader Mechanical Equipment Co., LTD believe that whatever the field is, quality has always been at the heart of the company’s performance. We treat quality and service as a way of life and hope to serve you in the LD possible manner on a long term and mutually beneficial basis. If you want to know more information about our sunflower oil plant or any other seed processing plant, please contact us in the following form. Our responsible, experienced sunflower oil processing technical team is always ready to serve and guide you at any time.
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