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Preparation method of amino acid modified attapulgite clay palm oil decolorizing agent

A technology of attapulgite clay and amino acid, which is applied in the direction of fat oil/fat refining, chemical instruments and methods, and other chemical processes, and can solve the problems of oil anti-color and no effective removal, so as to suppress the anti-color problem, increase pores and The effect of specific surface area

Active Publication Date: 2013-10-23
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

AI Technical Summary

Problems solved by technology

Chinese patents CN102225327A, CN102744033 A, and CN102806063A all use different treatment methods to modify the attapulgite clay, which improves the decolorization ability, but this type of decolorizer does not effectively remove the trace metal ions in the oil, making the oil exist. Inversion phenomenon still exists during storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: In a stirring state, add 100 kg of attapulgite clay into 400L sulfuric acid solution with a concentration of 0.25% by mass, add 5kg of L-methionine after reacting at 90°C for 1 hour, continue to stir and react for 0.5 hour, and filter with plate and frame. After pressing by a filter press, drying in a rotary kiln, and pulverizing to 200 mesh by an airflow mill, an amino acid-modified attapulgite palm oil soil decolorizer is obtained. After decolorization treatment, the red value of palm oil decreased from 3.8 to 2.1, and the red value did not change after 6 months of storage.

Embodiment 2

[0018] Example 2: In the stirring state, 100 kg of attapulgite clay was added to 400L sulfuric acid solution with a concentration of 5% by mass, and after 4 hours of reaction at room temperature, 0.1 kg of histidine was added, and the stirring reaction was continued for 4 hours, followed by plate and frame filtration. After filtering with a filter press, drying in a rotary kiln, and pulverizing with a jet mill to 200 mesh, an amino acid-modified attapulgite palm oil soil decolorizer is obtained. After decolorization treatment, the red value of palm oil decreased from 4.2 to 2.2, and the red value did not change after 6 months of storage.

Embodiment 3

[0019] Example 3: In the stirring state, add 100 kg of attapulgite clay into 1000L sulfuric acid solution with a concentration of 1% by mass, add 0.25kg of L-methionine after reacting at 60°C for 2 hours, continue to stir and react for 2 hours, and filter with a plate and frame. After pressing by a filter press, drying in a rotary kiln, and pulverizing to 200 mesh by an airflow mill, an amino acid-modified attapulgite palm oil soil decolorizer is obtained. After decolorization treatment, the red value of palm oil decreased from 12 to 4.0, and the red value did not change after 6 months of storage.

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Abstract

The invention discloses a preparation method of an amino acid modified attapulgite clay palm oil decolorizing agent. The preparation method comprises: inorganic acid activating treatment of attapulgite clay, amino acid modification of the attapulgite clay, after a certain reaction time filtering and impurity removing, solid-liquid separation, drying and baking, and crushing and sieving, and obtaining of the amino acid modified attapulgite clay palm oil decolorizing agent. The amino acid modified attapulgite clay palm oil decolorizing agent prepared by the preparation method not only has good decolorizing effect, but also can prevent the palm oil oxidation deterioration during storage, and improve the storage security.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent for oil decolorization, in particular to a preparation method of an amino acid modified attapulgite clay palm oil decolorant. Background technique [0002] During the transportation and storage of palm oil, due to the action of light, heat, oxygen in the air and trace metal ions in the oil, oxidation reactions will occur, which will cause the oil to change color and cause rancidity. Therefore, problems such as anti-coloring of palm oil and preventing acid value from exceeding the standard have become problems that production and processing enterprises try to solve. In order to improve the storage quality of palm oil, the traditional method is to add antioxidants after palm oil is refined, which is a temporary solution, not a permanent solution. If the trace metal ions in the oil can be removed in the decolorization step, the storage stability of the oil can be further improved. [0003] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C11B3/10
Inventor 康玉茹王爱勤杨惠民牟斌
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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