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Oil refining method

A technology of oil and crude oil, which is applied in the field of oil refining, can solve the problems of difficult separation of phospholipids, poor flocculation and sedimentation of phospholipids, and difficult degumming of oils, and achieve the effects of improving hydration, avoiding emulsification, and easy coagulation

Inactive Publication Date: 2011-11-23
湖南盈成油脂工业有限公司
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AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems of oil emulsification, phospholipid flocculation and sedimentation and difficulty in phospholipid separation in the prior art, the present invention proposes a new method for refining oil, which effectively avoids the problems of oil emulsification and difficult oil degumming

Method used

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Examples

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Embodiment 1

[0021] Get 1000kg of crude vegetable oil, first heat the crude oil to 85°C through a plate heat exchanger, then add 1.5kg of phosphoric acid with a concentration of 85%, and carry out acid reaction in an acid reaction tank.

[0022] After the acid reaction from the acid reaction tank, it enters the multi-effect mixer, and the mixing frequency of the multi-effect mixer is 45HZ. At the same time, the sodium hydroxide with a molar concentration of 1mol / L is added by the lye quantitative pump, and the amount of sodium hydroxide is calculated according to the following formula:

[0023] G NaOH =7.13×10 -4 ×G 油 ×AV×(1~1.25 times)

[0024] AV——acid value of crude oil mgKOH / g oil G 油 ——crude oil quality, Kg

[0025] The acid value of crude oil is 4.2 after acid reaction, and the calculation shows that the amount of sodium hydroxide added is about 3kg.

[0026] At the same time, 3.5 kg of hot water was added by the hot water pump for mixing, the temperature of the hot water was c...

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Abstract

The invention provides a novel oil refining method, which comprises the following steps of: (1) acid reaction: heating crude oil to 80-90 DEG C, then adding phosphoric acid with the concentration of 80-90% and mixing for acid reaction; (2) deacidifying and degumming: adding sodium hydroxide with the concentration of 0.33-1.77 mol / L to the acidified crude oil, simultaneously adding hot water of 90-99 DEG C for stirring and mixing, wherein the amount of sodium hydroxide is determined according to the weight and acid value of the crude oil and the weight of the hot water accounts for 0.3-0.4% that of the crude oil; then heating to 90-95 DEG C after mixing and reacting for 35-60 minutes, then removing impurities and washing with water; and (3) drying: dewatering by a water washing centrifuge, and then heating the crude oil to 105-115 DEG C in an environment with a vacuum degree of -0.09 to -0.1 MPa for drying. By using the method provided by the invention, the problems of oil emulsion and difficulty in oil degumming are effectively avoided.

Description

technical field [0001] The invention relates to an oil processing technology, in particular to a method for refining oil. Background technique [0002] Impurities such as phospholipids, proteins, mucus, and glycosyl diglycerides contained in crude oil are called peptizing impurities because they form a peptizing system with oil. The existence of these peptizing impurities not only reduces the use value and storage stability of oil, but also has a series of adverse effects in oil refining and processing. Resulting in a decline in the quality of the final product oil. Because the peptizing impurities in crude oil are mainly phospholipids, degumming is often called dephosphorization in the process. [0003] There are many degumming methods, such as hydration degumming, acid refining degumming, alkali refining degumming, special wet degumming and chemical reagent degumming, etc. The most common applications in the oil industry are hydration degumming and acid refining degummi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/04C11B3/06
Inventor 彭华
Owner 湖南盈成油脂工业有限公司
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