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.
10-500tpd new technoloLD groundnut oil manufactureing process with ISO9001:2000,BV,CE
Brief introduction of groundnut oil manufactureing process
1, pressing chamber pressure size range, good adjustable (0.1-150MPa);
2, can adapt to the process of various oil and various oil preparation, including cold pressing, hot pressing, high water slurry residue for oil and high oil content oilseed grinding pressure oil;
3, long production period, loading, unloading cake trouble, stand-alone production efficiency is low, equipment and large occupation area;
4, static squeezing out oil efficiency is low, the operation requirements "edge planing reconditioning, workshop insulation (35Ã¢ÂÂ)," poor labor conditions. Therefore, this kind of oil equipment in general can only be used in some scattered oil (lLD rice bran) and the need to maintain the special flavour or nutritional (lLD cocoa beans, sesame) pulping hydraulic oil.
Operation Principle of groundnut oil manufactureing process
1.When oil press is on work, material enters the extruding chamber from the hopper and then moves forwards by the rotating pressing screw and is pressed.
2.Under higLDemperature condition in the chamber, there is quite strong friction among press screw, chamber and the oil materials.
3.On the other hand, root diameter of the pressing screw carries larger from one end to the other.
4.Hence when rotating, the thread not only pushes particles moving forwards but also turns them outwards as well.
5.Meanwhile, particles adjacent the screw will rotate along with screwÃ¢ÂÂs rotating, causing every particle inside the chamber to possess different speed.
6.Therefore, relative movement among particles creates neat which is necessary during manufacturing because of helping protein change property, damage colloid, increase plasticity, decrease oilÃ¢ÂÂs elasticity, resulting in high oil.
TechnoloLD process of groundnut oil manufactureing process
The de-ironing sunflower seed feed into single-deck screen clean sift for cleaning, large material expelled from discharge hole, and the bigger ones enter into grinder for smashing.
2. Cracking and flaking
Cleaned sunflower seeds enter into flaket from crusher which has two teeth roller with different speed .Then rolled into embryo under roller.
3. Cooking steaming process
Under cooking process, flakes come up complicated physical chemistry change, and the moisture and temperature of the materials can reach press term.
4. Pressing process
After reaching press term, The embryo enter into oil press for prepress. The dreg inclusion crude oil is pressed into settle oil tank through oil scraper blade.
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