Edible oil refining Small scale palm oil refining machinery for 1-80 TPH includes a series processing procedures as degumming, neutralization, bleaching, deodorization and winterisation. In general there are two methods of vegetable/edible oil processing, one is physical refining and the other is chemical refining. However, no matter what kinds of reining methods Small Coconut Oil Mill Machinery, Shandong Leader Machinery Co.,ltd. are all done with the help of various oil processing equipment and machinery, and are used to refine almost all kinds of oil extracted from oil seeds like sunflower seeds, peanuts , sesame seeds, and soya bean seeds etc.
Main Steps of Edible Oil Refining: Small Coconut Oil Mill Machinery Crude Oil Degumming: In this step gums in crude oil are removed by hydration with the help of phosphoric acid.Neutralization: In this step free fatty acids are neutralized by using sodium hydroxide and convert them into soap. Additional impurities are also removed by adsorption on soap.Bleaching: During bleaching, unwanted pigments are adsorbed physically and oil will become much clearer.Deodorization: Deodorization is used to remove unacceptable odors by steam distillation, the odoriferous compound are stripped off with the help of live injected steam into heated oil under high vacuum pressure.Dewaxing (necessary for cold areas)Some kinds of oil like sunflower, maize germ or corn oil have waxes inside, if these Shandong Leader Machinery Co.,ltd. impurities are not removed, the oil will freeze easily under low temperature, thus effecting oil quality and appearance. so this process is necessary in extremely cold areas.
Small scale palm oil refining machinery for 1-80 TPH
The process before oil refining is extraction,oil leaching is advantageous to oil refining.
Leaching is divided into three types :
1. Towline extractor : The amount of processing is 7000T/D .
2. Ring extractor : The amount of processing is 3000T/D.
3.Rotocel extractor: The amount of processing is 1500T/D.
The towline extractor working principle of leaching :
1. After pretreatment of the oil into the leaching, solvent (n-hexane) will be sprayed on the surface of the oil in the oil, most of the oil will be solvent extraction.
The oil concentration of the first funnel is relatively high, generally 60%-65%. Oil is directly pumped.
2. Oil after the second funnel, solvent will again sprayed on oil, again leaching, oil concentration and mixed oil obtained by solvent content is lower, more and more high.
3. Oil is shipped out extractor.
After leaching will get two products :
1. Mixed oil (oil and solvent) : Mixed oil first enters the first evaporation equipment, steam enters from the equipment below, mixed oil and steam full contact. The first evaporation in 0.006-0.08Mpa negative condition. The oil temperature is 105-110 C. Then enter the second evaporation, the same process.
2. The cake containing solvents : Solvent containing cake steamed into the offline, two layers of steaming offline is preparing to break free, full and cake contact, indirect heating of cake, then is Breathable layer -- desolventizing layer -- drying layer -- cooling layer
The last step leaching :
Steamed out of the solvent into the condenser for cooling, cannot be condensed gas into paraffin recovery system, and then enters the analytical column to paraffin absorption solvents, gas separation.
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The purpose of Neutralizing Vegetable Oils Small Coconut Oil Mill Machinery is to remove Free-Fatty Acids (FFAs). Traditionally, FFAs are treated with caustic soda (NaOH). The reaction produces Soaps which are separated from the oil. Because Small scale palm oil refining machinery for 1-80 TPH trace amounts of soaps remain in the oil, the oil is either washed with water or treated with Silica.Shandong Leader Machinery Co.,ltd. Some processors prefer not to perform caustic neutralizing. Instead, they prefer Physical Refining in which the FFAs are evaporated from the oil under high temperature and vacuum. This Small scale palm oil refining machinery for 1-80 TPH process can be combined with deodorization step described under FFA stripping.Physical Refining process Small scale palm oil refining machinery for 1-80 TPH is preferred because (a) it does not produce soaps; (b) it recovers fatty acids that provide better cost recovery; (c) there is smaller yield loss compared to caustic refining—especially for oils with higher FFAs; and (d) it is a chemical-free process.
If you have any demand about microwave drying equipment and edible oil refining equipment, pls feel free contact us any time.
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NOTE:We can specially design the machine according to your production's features.