20T/D Edible Oil Refinery Plant Introduction
We provide 20T/D edible oil refinery plant for the crude oil degumming, neutralizing, bleaching and deodorizing process. The refined oil has high quality and is good for long time storage. The plant is suitable for rapeseed oil, cottonseed oil, soybean oil, peanut oil, etc. We also offer 1-5T/D edible oil refinery plant and 10T/D edible oil refinery plant.
Advantages of 20T/D Edible Oil Refining Line
1. Customized capacity. We customize plant as per your requirement for the capacity.
2. Flexible usage. The plant can work independently or together with whole oil production line.
3. Excellent after-sales service. We provide two engineers after your receipt of equipment for on-site installation, debugging and training.
20T/D Edible Oil Refining Equipment
Refining Tank: used for degumming and neutralizing (3 sets)
Bleaching Tank: dry the oil after washing and remove the pigments from neutralized oil. (1 set)
Stainless Steel Deodorizer: remove the odor substances from decolorized oil (1 set)
Other Auxiliary Equipment: air compressor, filters, pumps, etc.
20T/D Edible Oil Refining Process
Refining is conducted in a series of steps such as degumming (to remove gums), neutralizing (to remove FFA), bleaching (to remove color), and deodorizing (to remove odor and taste). Every process should be strictly controlled so that to do well to the next steps.
This process adopts hydration method to remove gums in the crude oil. Filtered oil is pumped into the refining tank, with fast stirring, the temperatures rise, and then hot water is added. Phosphatides absorb water and dilate, meanwhile adsorb other impurities, finally they deposit and get separated. The oil is then pumped into the bleaching tank for vacuum dehydration and cooled. The hydrated oil feet can be dried for lecithin, which is used for food additives and feed additives.
Degummed and neutralized oil are pumped into the bleaching tank, dried and mixed with bleaching earth, which adsorbs pigments, as well as peroxide, trace metals, phosphatides, soaps, PAHs and residual pesticide. The mixture is then dried and pumped into the oil filter to remove clay.
Degummed oil is mixed with the caustic solution (NaOH) to react with free fatty acids and form soapstocks, which settle down and get removed by pumping into soapstock tank. Part of other impurities is also removed by adsorption on soapstocks. Then the oil is heated and washed with hot water for 2-3 times till the waste water is clean, then pumped into the bleaching tank for vacuum dehydration and cooled. The byproduct soapstock can be sold to producers of soaps, biodiesel, livestock feed, or fatty acids.
The oil, with gums, pigments and trace metals well removed, is subjected to steam distillation under high temperature and high vacuum to evaporate all odor substances (mainly FFA). Then the oil is cooled and filtered by bag filter to remove metallo-chelate. The volatile gas is cooled to separate the fatty acids in it, which are then stored in the fatty acid tank for recycling. In the process, peroxide and its decomposition product and other impurities are also removed.