Main features: the use of physical refining process, do not need to alkali refining, to avoid the loss of neutral oil, greatly reduce the cost of production costs.
Process: crude oil → hydration → decolorization → deacidification, deodorization → refined oil
Operation Points:
The oil is pumped into the oil refining pot and degummed and operated. When the oil and soap are clearly separated, quickly sink, stop stirring, standing. Soap feet into the soap feet by the pump to recover the neutral oil. Oil in the oil refining pot to continue washing, oil washed to the next process - bleaching.
The degummed oil is pumped through the flowmeter control valve into the premix and clay. Oil-soil mixed oil heated to the process after heating the temperature into the continuous decolorization tower decolorization, decolorization after the oil filter to the next process - deacidification, deodorization
In the gasifier, the oil is ejected through a plurality of nozzles on the feed pipe, and a high vacuum of about 3 mmHg is maintained in the gas separator to allow a small amount of air to be released in the oil The The oil is pumped out of the gasifier and pumped into an oil-to-oil exchanger for heat exchange with hot oil from the deodorization tower and heated to at least 180 ° C. From the oil-oil heat exchanger, the oil is injected into the heat-conducting oil furnace heater, heated to 250 ° C, and the heat transfer oil is heated to 290 ° C in a heat-conducting oil furnace and recycled throughout the process. The hot deodorized oil enters the combined deodorizing tower from the thermally conductive oil heater and uses the direct steam to feed the fatty acids and other relatively volatile odorous substances in the packing section and then dewaxes and deodorization. Deodorization and deodorization of the oil from the combined deodorization tower discharge, pumped into the heat exchanger and the deodorant oil to be exchanged, and then into the cooler, the water cooling, cooling oil temperature is not higher than 70 ℃, and finally through the fine filter, To carry out insurance filter, and then into the finished product tank irrigation.
For deodorized rice bran oil, corn germ oil and other fat (wax) higher oil should also be further dewaxing and degreasing.
Suitable varieties: rice bran oil, corn germ, animal oil and other high acid prices, impurities and more oil.
The main equipment: oil refining pot, heat exchanger, efficient decolorization tower, filter, gasifier, heater, combined deodorization tower, fatty acid trap, cooler, four steam jet pump, thermal oil furnace unit.