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Rice bran oil refinement and byproduct production method

A production method and technology of rice bran oil, applied in the field of oil processing, can solve the problems of low purity of by-products, poor economic benefits, difficult production, etc., and achieve the effects of simple process, low power consumption, and low equipment investment

Inactive Publication Date: 2012-06-13
WUHAN POLYTECHNIC UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Patent No. 200920083355.6 discloses a "semi-continuous rice bran oil refining equipment". Using this set of equipment to realize the process steps of intermittent degumming, continuous decolorization, continuous deacidification, deodorization and intermittent dewaxing can produce edible rice bran oil that meets two The national standard for edible rice bran oil (GB19112-2003) of Grade 4 edible rice bran oil (GB19112-2003), but there are still the following problems: (1) It is difficult to stably produce products that meet the national standard Grade 3 rice bran oil: in the actual production process, due to the degumming step only The effect of degumming with phosphoric acid is not good, which affects the quality of the final product oil; (2) The color of the product oil is still dark, and it can be seen that the pretreatment processes such as degumming and decolorization need to be further improved
There are following problems in this technique: (1) is intermittent production, causes production scale to be small; (2) separation effect is relatively poor, causes the isolated by-product purity to be low, and economic benefit is poor

Method used

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  • Rice bran oil refinement and byproduct production method
  • Rice bran oil refinement and byproduct production method
  • Rice bran oil refinement and byproduct production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Washing and removing impurities: pump crude rice bran oil into the refining pot, and heat the oil to 65°C with indirect steam while stirring. Add hot water at a temperature of 75°C, the amount of water added is 5% (w / w) of the oil weight, add water to wash, let it stand for precipitation for 1 hour, and obtain the rice bran crude oil after the upper layer has been removed, and release the lower layer of waste washing water and all the oil at the same time. Contains solid impurities.

[0025](2) Acid / salt joint degumming: Put the crude rice bran oil after washing and removing impurities in the refining pot, and heat the oil temperature to 65°C with indirect steam while stirring. Add hot water at a temperature of 75°C, the amount of water added is 5% (w / w) of the oil weight; then add industrial phosphoric acid with a concentration of 85% (w / w), and the amount added is 0.1% (w / w) of the oil weight Then add the calcium chloride solution of concentration 5% (w / v), the a...

Embodiment 2

[0032] (1) Washing and removing impurities: pump crude rice bran oil into the refining pot, heat the oil to 75°C with indirect steam while stirring. Add hot water at a temperature of 85°C, the amount of water added is 8% (w / w) of the oil weight, add water to wash, let it stand for precipitation for 2 hours, and obtain the rice bran crude oil after the upper layer has been removed, and release the lower layer of waste washing water and all the oil at the same time. Contains solid impurities.

[0033] (2) Acid / salt joint degumming: Put the crude rice bran oil after washing and removing impurities in the refining pot, and heat the oil temperature to 75°C with indirect steam while stirring. Add hot water at a temperature of 85°C, the amount of water added is 10% (w / w) of the oil weight; then add industrial phosphoric acid with a concentration of 85% (w / w), and the amount added is 0.3% (w / w) of the oil weight Then add the calcium chloride solution of concentration 10% (w / v), and t...

Embodiment 3

[0040] (1) Washing and removing impurities: pump crude rice bran oil into the refining pot, heat the oil to 70°C with indirect steam while stirring. Add hot water at a temperature of 80°C, the amount of water added is 8% (w / w) of the oil weight, add water to wash, let it stand for precipitation for 1 hour, and obtain the rice bran crude oil after the upper layer has been removed, and release the lower layer of waste washing water and all the oil at the same time. Contains solid impurities.

[0041] (2) Acid / salt joint degumming: Put the crude rice bran oil after washing and removing impurities in the refining pot, and heat the oil temperature to 72°C with indirect steam while stirring. Add hot water at a temperature of 80°C, the amount of water added is 7% (w / w) of the oil weight; then add industrial phosphoric acid with a concentration of 85% (w / w), the amount added is 0.5% (w / w) of the oil weight Then add the calcium chloride solution of concentration 20% (w / v), the additio...

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Abstract

The invention relates to a rice bran oil refinement and byproduct production method, and solves the problems of poor quality, low product and byproduct yield, low purity, complex technique, small production scale and the like in the existing product oil refined from rice bran oil. The technical scheme is as follows: the method comprises the following steps: carrying out acid / salt combined degumming on rice bran raw oil, dewaxing at low temperature, decolorizing, deacidifying / deodorizing, and degreasing by winterization to obtain tertiary rice bran oil and byproducts (crude wax cake, mixed fatty acids and solid grease). The technique provided by the invention is simple to control, can stably obtain Chinese standard tertiary rice bran oil and byproducts thereof, and can implement large-scale production.

Description

technical field [0001] The invention relates to the field of oil processing, in particular to a method for refining rice bran oil and producing by-products. Background technique [0002] The refining methods of rice bran oil can be divided into chemical refining and physical refining, and can be divided into continuous refining and batch refining in terms of production methods. The chemical refining of crude rice bran oil will produce a large amount of waste water and soapstock, and a lot of neutral oil will be lost in the refining process, and only the refining yield of rice bran oil will drop significantly. Physical refining can greatly increase the refining yield of rice bran oil, but it has strict requirements on the matching pretreatment process. The continuous refining of rice bran crude oil requires a lot of process equipment, large power consumption and high investment in equipment. Although the equipment investment and power consumption of batch refining are small...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/04C11B3/02C11B3/10C11B3/12C11B11/00C11C1/02C11C1/10
CPCY02W30/74
Inventor 刘大川方雪华卢艳贵刘晔
Owner WUHAN POLYTECHNIC UNIVERSITY
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