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Rapeseed oil hydration degumming and phosphoric acid degumming combined refining method

A technology of hydration degumming and phosphoric acid degumming, which is applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of inability to degumming, and achieve the effect of not being easy to oxidize and hydrolyze, and having high purity

Inactive Publication Date: 2016-09-14
云南万兴隆集团油脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a combined refining method of rapeseed oil hydration degumming and phosphoric acid degumming, to solve the problem that the non-hydrophilic β-phospholipids in the current rapeseed oil cannot be degummed during refining, thereby improving the quality of the finished rapeseed oil Quality and Extended Shelf Life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] a. To remove impurities, to filter out impurities in crude oil;

[0017] b. Phosphoric acid degumming, adjust the speed of the agitator in the hydration pot to 30 rpm for slow stirring, turn on the heating steam and indirect heating through the tubes, wait until the oil temperature rises to 60 0 At C, adjust the speed to 60 rpm and stir, add food-grade phosphoric acid with an oil weight of 2‰ and a concentration of 85% to the crude oil, and spray the aforementioned food-grade phosphoric acid evenly on the crude oil in the hydration pot within 15 minutes , continue stirring for 20 minutes while slowly raising the oil temperature to 65 0 C;

[0018] c, hydration degumming, the phosphoric acid degumming of the last step in the crude oil and warming up to 65 0 C, add 75% of oil weight 10% 0 C salt soft water, the concentration of salt soft water is 5%, all the salt soft water is added within 15 minutes, stir for 20 minutes while slowly heating up, then adjust the stirrin...

example 2

[0022] a. To remove impurities, to filter out impurities in crude oil;

[0023] b. Phosphoric acid degumming, adjust the speed of the agitator in the hydration pot to 30 rpm for slow stirring, turn on the heating steam and indirect heating through the tubes, wait until the oil temperature rises to 60 0 At C, adjust the speed to 60 rpm and stir, add food-grade phosphoric acid with an oil weight of 3‰ and a concentration of 85% to the crude oil, spray evenly in the crude oil within 15 minutes, stir for 20 minutes and slowly heat up to 65 0 C;

[0024] c, hydration degumming, after the crude oil is degummed by phosphoric acid and heated to 65 0 C, add 75% of oil weight 10% 0 C salt soft water, the concentration of salt soft water is 4%, all the salt soft water is added within 15 minutes, stir for 20 minutes while slowly heating up, then adjust the stirring speed of the hydration pot to 30 rpm, stir for 15 minutes, the final temperature rise of the oil to 75 0 C stops stirring...

example 3

[0028] a. To remove impurities, to filter out impurities in crude oil;

[0029] b. Phosphoric acid degumming, adjust the speed of the agitator in the hydration pot to 30 rpm for slow stirring, turn on the heating steam and indirect heating through the tubes, wait until the oil temperature rises to 60 0 At C, adjust the speed to 60 rpm and stir, add food-grade phosphoric acid with an oil weight of 2.5‰ and a concentration of 85% to the crude oil, spray evenly in the crude oil within 15 minutes, stir for 20 minutes and slowly heat up to 65 0 C;

[0030] c, hydration degumming, after the crude oil is degummed by phosphoric acid and heated to 65 0 C, add 75% of oil weight 10% 0 C salt soft water, the concentration of salt soft water is 4%, all the salt soft water is added within 15 minutes, stir for 20 minutes while slowly heating up, then adjust the stirring speed of the hydration pot to 30 rpm, stir for 15 minutes, the final temperature rise of the oil to 75 0 C stops stirri...

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Abstract

The invention discloses a rapeseed oil hydration degumming and phosphoric acid degumming combined refining method. The refining method comprises the following steps: step a, phosphoric degumming: heating coarse oil to a temperature of 600 DEG C, adding food grade phosphoric acid, which accounts for 2 to 3 wt% of coarse oil and has a concentration of 85%, into the coarse oil under a stirring speed of 60 r / min, and then heating to a temperature of 650 DEG C under stirring; step b, hydration degumming: after phosphoric acid degumming, heating to a temperature of 650 DEG C, adding salt-containing soft water with a temperature of 750 DEG C, wherein the soft water accounts for 10 wt% of coarse oil, heating to a temperature of 750 DEG C under stirring, stopping heating, performing precipitation for 6 to 8 hours, and discharging residues to obtain primarily degummed oil; step c, water washing: heating the primarily degummed oil to a temperature of 800 DEG C, adding salt-containing soft water with a temperature of 900 DEG C, wherein the soft water accounts for 10% of primarily degummed oil and has a concentration of 3 to 5%, stirring for 15 minutes, stopping stirring after the salt-containing soft water is completely added, allowing the system to stand still to carry out precipitation for 2 hours to obtain degummed oil; and finally drying and dehydrating degummed oil in a continuous desolvation tower so as to obtain finished oil. The refined finished oil has a high purity and is difficult to oxidize and hydrolyze. The shelf life of grease is prolonged from 18 months to 24 months.

Description

technical field [0001] The invention relates to a combined refining method of hydration degumming and phosphoric acid degumming of rapeseed oil. Background technique [0002] Phospholipids in rapeseed oil are divided into two types according to their hydration characteristics: hydrophilic α-phospholipids and non-hydrophilic β-phospholipids. Traditional hydration degumming is only effective for hydrophilic α-phospholipids. Contains a small amount of non-hydrophilic β-phospholipids, 280 0 There are precipitates in the heating experiment of C, which affects the quality of the oil. Impact on the process effect of refining primary oil: During the decolorization process, the consumption of adsorbent will be increased, and the decolorization effect will be reduced, and the undegummed oil cannot be physically refined. Effect on oil storage: In oil storage, due to the hydrophilicity of phospholipids, it can promote the hydrolysis of oil and reduce the storage stability. Effect of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/04
CPCC11B3/001C11B3/04
Inventor 唐闻兵
Owner 云南万兴隆集团油脂有限公司
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