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Method for preparing palm oil decolorizing agent by attapulgite clay soybean oil decolorized waste residues

A technology of attapulgite clay and soybean oil, which is applied in the fields of fat oil/fat refining, chemical instruments and methods, and other chemical processes, etc., can solve the problem of high price of activated carbon, and achieve the effect of fast filtration rate and less residual oil.

Active Publication Date: 2013-04-24
中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, activated carbon is expensive, so it is only used as a compound agent in palm oil decolorization

Method used

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  • Method for preparing palm oil decolorizing agent by attapulgite clay soybean oil decolorized waste residues
  • Method for preparing palm oil decolorizing agent by attapulgite clay soybean oil decolorized waste residues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Take attapulgite clay decolorization waste residue with an oil content of 10%, evenly spray hydrochloric acid with 6.5% waste residue mass in a stirring tank, send it to a rotary kiln and roast it in an air atmosphere at 380 °C for 1 hour, and wash it with water and ethanol respectively after cooling. After drying at 100oC, it was crushed to 200 meshes to obtain an attapulgite clay palm oil decolorizer loaded with activated carbon. After decolorization treatment, the red value of palm oil decreased from 4.1 to 2.3.

Embodiment 2

[0019] Example 2: Take the attapulgite clay decolorization waste residue with an oil content of 5%, spray evenly 3% sulfuric acid of the waste residue mass in a stirring tank, send it to a rotary kiln and roast it at 340 °C in an air atmosphere for 3 hours, and wash it with water and ethanol respectively after cooling. After drying at 110oC, it was pulverized to 200 meshes to obtain an attapulgite clay palm oil decolorizer loaded with activated carbon. After decolorization treatment, the red value of palm oil decreased from 4.1 to 2.2.

Embodiment 3

[0020] Example 3: Take the attapulgite clay decolorization waste residue with an oil content of 15%, evenly spray 5% sulfuric acid and 3% glycine in the stirring tank, send it to the rotary kiln and roast it in the air atmosphere at 340 o C for 1 hour, and after cooling, pass through the water respectively. Wash with ethanol, dry at 120oC and pulverize to 200 mesh to obtain the attapulgite clay palm oil decolorizer loaded with activated carbon. After decolorization treatment, the red value of palm oil decreased from 4.1 to 2.0.

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Abstract

The invention discloses a method for preparing a palm oil decolorizing agent by attapulgite clay soybean oil decolorization waste residues, which comprises the following steps of: firstly, carrying out soybean oil decolorization treatment by attapulgite clay; then spraying acid to attapulgite clay waste residues which adsorb grease; roasting at a temperature of 300 to 380 DEG C; and finally, washing, drying and sieving to obtain the attapulgite clay palm oil decolorizing agent loaded with activated carbon. The palm oil decolorizing agent prepared by the method utilizes a synergistic effect between the attapulgite clay and the activated carbon and not only realizes decolorization of palm oil, but also realizes recycling of the soybean oil decolorization waste residues; and the product has the advantages of high decolorization ratio, high filtering rate, oil damage and the like and is suitable for deeply decolorizing crude palm oil.

Description

technical field [0001] The invention relates to a method for preparing a decolorizing agent, in particular to a method for preparing a palm oil decolorizing agent by using attapulgite clay soybean oil decolorization waste residue. Background technique [0002] The proportion of palm oil in the world's total oil production has exceeded 30%, and it is the second largest edible vegetable oil in the world. The decolorization of palm oil is mainly to remove oil-soluble pigments such as carotenoids and chlorophyll mixed in crude palm oil and impurities such as trace metals, soap particles, phospholipids, etc., thereby improving the appearance and storage stability of the oil. At present, the commonly used adsorbents for adsorption and decolorization are acid-activated montmorillonite (commonly known as activated clay) and its compound activated carbon products. Activated clay has a good selective adsorption capacity for chlorophyll and other peptizing impurities (such as phosphol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C11B3/10
Inventor 牟斌王爱勤康玉茹王文波
Owner 中国科学院兰州化学物理研究所盱眙凹土应用技术研发中心
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