Refining method of rice oil

A refining method and rice oil technology, applied in the production/processing of edible oil/fat, etc., can solve the problems of high energy consumption, human health hazards, nutritional value discount, etc., and achieve the effect of high product yield and no waste water discharge.

Active Publication Date: 2013-02-20
陈汉卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that alkali refining not only causes a large loss of neutral oil and produces a large amount of waste water, but also greatly reduces the content of oryzanol, so that the content of oryzanol in the product rice oil is extremely low, and the nutritional value is greatly reduced; Physical deacidification The disadvantage is high energy consumption, and at the same time, it is easy to produce trans fatty acids in the long-term high-temperature process, which is potentially harmful to human health.
In the conventional refining process of rice oil, white clay adsorption is usually used for decolorization. The disadvantage is that in addition to the loss of neutral oil, the further harmless treatment of bleaching soil is also a great burden for the manufacturer.
In addition, the color of decolorized rice oil is difficult to meet the standard of GB 19112-2003 first-grade oil, which is why most of the rice bran oil on the market is fourth-grade oil

Method used

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  • Refining method of rice oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The fourth-grade rice bran oil is heated up to 155°C by the heat exchanger, then enters the molecular still, and is evenly distributed on the evaporation surface by the distributor. The temperature of the evaporation surface is 195°C. The light component collection tank, the heavy component directly enters the heavy component collection tank, and the vacuum degree of the decolorization system is at 5Pa. The heavy component enters the first step of fractionation process, heats up to 230°C through a heat exchanger, and then enters a molecular still for refining. The material is evenly distributed on the evaporation surface through a distributor. The temperature of the evaporation surface is 300°C. The temperature is 1Pa, the light component is cooled to 35°C by the built-in condenser, and flows into the semi-finished product collection tank, and the heavy component directly enters the heavy component collection tank, and then enters the second step of fractionation process...

Embodiment 2

[0017] The fourth-grade rice bran oil is heated up to 170°C by the heat exchanger, then enters the molecular still, and is evenly distributed on the evaporation surface by the distributor. The temperature of the evaporation surface is 245°C. The light component collection tank, the heavy component directly enters the heavy component collection tank, and the vacuum degree of the decolorization system is at 40Pa. The heavy component enters the first step of fractionation process, heats up to 250°C through a heat exchanger, and then enters a molecular still for refining. The material is evenly distributed on the evaporation surface by a distributor. The temperature of the evaporation surface is 310°C. The vacuum of the fractionation system The temperature is at 2Pa, the light component is cooled to 42°C through the built-in condenser, and flows into the semi-finished product collection tank, and the heavy component directly enters the heavy component collection tank, and then ente...

Embodiment 3

[0019] The fourth-grade rice bran oil is heated to 165°C through the heat exchanger, then enters the molecular still, and is evenly distributed on the evaporation surface by the distributor. The temperature of the evaporation surface is 195°C. The light component collection tank, the heavy component directly enters the heavy component collection tank, and the vacuum degree of the decolorization system is at 20Pa. The heavy component enters the first step of fractionation process, heats up to 230°C through a heat exchanger, and then enters a molecular still for refining. The material is evenly distributed on the evaporation surface through a distributor. The temperature of the evaporation surface is 300°C. The temperature is 1Pa, the light component is cooled to 35°C by the built-in condenser, and flows into the semi-finished product collection tank, and the heavy component directly enters the heavy component collection tank, and then enters the second step of fractionation proc...

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Abstract

The invention discloses a refining method of rice oil and belongs to the technical field of refined grease. The refining method is used for solving the problems of high energy consumption, large oil refining loss, nutrient loss and environmental pollution. The refining method of rice oil comprises the following steps of: heating rice bran oil of four-level standard to 150-170 DEG C through a heat exchanger, conveying the rice bran oil into a molecular still, distributing the rice bran oil on an evaporation surface through a material distributor, wherein the temperature of the evaporation surface is 190-245 DEG C, cooling the light component pigment to 35-42 DEG C through a built-in condenser, and the light component pigment flows into a light component collection tank, the heavy component directly enters a heavy component collection tank, and the vacuum degree of a decolorizing system is 5-40 Pa, and performing fractionation, deacidification and winterization degreasing to obtain the rice oil. The refining method of rice oil can be extensively used for refining the rice oil.

Description

technical field [0001] The invention relates to a method for processing edible oil, in particular to a method for refining rice oil. Background technique [0002] Rice oil, commonly known as rice bran oil, is a by-product of rice peeling during the whitening process. Crude oil is obtained by pressing or leaching, and then further refined (physical or chemical refining). Because of its reasonable fatty acid composition, and the vitamin E, sterol, oryzanol and other lipids it contains are beneficial to the absorption of the human body, it has beneficial effects such as removing cholesterol in the blood, reducing blood lipids, and promoting human growth and development, and has become a well-recognized nutrition at home and abroad. healthy oil. It is worth mentioning that oryzanol is a characteristic indicator of rice oil, and the content of oryzanol in rice crude oil is about 2.5%. At present, rice oil has been widely concerned by countries all over the world, and has become...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D7/02
Inventor 陈汉卿
Owner 陈汉卿
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