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Crude oil refining

TIME:2014-10-27 15:59:35FROM: AUTHOR:
Crude oil refining: crude oil through the standing corn, natural precipitation 24 hours, to be used for food and hydration vacuum dehydration, become refined...

Crude oil refining: crude oil through the standing corn, natural precipitation 24 hours, to be used for food and hydration vacuum dehydration, become refined corn oil, less than 0.3 percent of its water, trash content not higher than 0. 2%, odor, taste and color, normal, an acid value of 8 or less, and if the acid value is too high, but also for alkaline deacidification, is to a certain amount of hydrated water or dilute alkali, an aqueous solution of salts and other electrolytes, added fats. Make some glue insoluble impurities, mechanical impurities, cohesion precipitation separated from the oil.

 

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Crude oil refining specific operation is to filter the crude oil is continuously pumped into the hydration pot, with direct steam or hot water right amount of hydration, mixing and continuously. Spray the appropriate amount of steam or hot water is 4% by weight of the crude oil, the oil temperature is maintained at about 80 to 90%. Continuously from the pan and then hydration, homogeneous mixture of oil and fully hydrated after colloid, is uniformly at a constant flow rate of the pump into the high-speed centrifuge separation. As isolated hydration absolutes, deodorizing tank after the pump into the vacuum processing, that was refined corn oil.
Separated oil foot, may not have salting, directly to the processing plant phospholipid phospholipid. Alkali refining is different alkali to neutralize free fatty acids, and removal of a part of another refining method impurities. General use of caustic alkali refining. Refining the oil into the pot, heating 25 ~ 30 ℃, rapid stirring with a wooden stick, then scaled that good soda added to the oil until the oil soap has a clear separation began when heated to 65 ~ 70 ℃, and continues to slow slow stirring, until the complete separation of soap oil until the mixture was stirred for about 40 minutes, due to neutralization, the acid value of the oil can be reduced.