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Grease decoloring agent

A technology of decolorizing agent and grease, which is applied in the direction of fat oil/fat refining, fat production, and other chemical processes, which can solve the problems of unrecyclable decolorizing agent, poor filtration performance of activated clay, and toxic impurities of heavy metal elements, etc., and achieve good economic benefits , Excellent impurity removal effect and low residual oil rate

Active Publication Date: 2014-04-09
中铝郑州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these decolorizing agents have their own advantages and disadvantages. Among them, the most widely used decolorizing agent for oil decolorization is activated clay, but this activated clay has poor filtration performance, and the dry base residual oil rate after decolorization is high (up to 30-40%). Heavy metal elements are toxic impurities, and the decolorizer cannot be recycled after decolorization, so it is necessary to find alternatives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 Take 50g each of amorphous aluminum hydroxide and pseudo-boehmite, mix well, add 3% acetic acid with a mass concentration of 2% to modify, and activate at 60°C for 4h. Take 0.2 g of it and add it to 200 g of crude oil, stir at 120°C for 20 minutes, and filter for detection. The red color of Lovibond colorimeter is 2.5, while under the same test conditions, the red color after adding 2g clay for decolorization is 3.5.

Embodiment 2

[0019] Example 2 Take 50g each of amorphous aluminum hydroxide and aluminum hydroxide gel, mix thoroughly, add 1% sulfuric acid with a mass concentration of 1.5% for modification, and activate at 75°C for 6h. Take 0.2 g of it and add it to 200 g of crude oil, stir at 120°C for 20 minutes, and filter for detection. The red color of Lovibond colorimeter is 3, while under the same test conditions, the red color is 3.5 after adding 2g clay for decolorization.

Embodiment 3

[0020] Example 3 Take 50g each of pseudo-boehmite and aluminum hydroxide gel, mix thoroughly, add 2% citric acid with a mass concentration of 3% for modification, and activate at 80°C for 5h. Take 0.2 g of it and add it to 200 g of crude oil, stir at 120°C for 20 minutes, and filter for detection. The redness of Lovibond colorimeter is 3.5, and the result of adding 2g of white clay is 4.

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PUM

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Abstract

The invention discloses a grease decoloring agent, relates to a purification and adsorption material, and especially relates to the grease decoloring agent of aluminum-based hydrate composite materials and a preparation method thereof. The grease decoloring agent is characterized by being prepared by selecting two or more than two aluminum-based hydrates having the adsorption property, carrying out mixing homogenization and then adding an acidic modifying agent for modification and activation. The grease decoloring agent is a mixture of the aluminum-based hydrate composite materials. The materials have the advantages of less using amount, good decoloring effect, easy filtration and separation, small residual oil rate and the like; moreover, the decolorizing agent does not contaminate products; after medium temperature roasting after decolorization, the decolorizing agent can be used in a raw material of a high temperature coating layer material, thereby reducing the decoloring agent cost; and the grease decoloring agent fully meets the requirements of food-grade grease on indicators of the chromaticity and the impurity content, and is easy to popularize and apply.

Description

technical field [0001] The invention relates to a decolorizing agent for grease and a preparation method thereof, and relates to a decolorizing agent for purifying adsorption materials, in particular to an aluminum-based hydrate composite material and a preparation method thereof. Background technique [0002] Various animal and vegetable crude oils contain a certain amount of impurities, which need to be purified and decolorized before edible and industrial applications. There are many methods for oil decolorization, and the most widely used method in industrial production is adsorption decolorization. Adsorption and decolorization of oil is to use certain substances (decolorizers) that have a strong selective adsorption effect on pigments to absorb pigments and other impurities in oils under certain conditions, so as to achieve the purpose of decolorization. [0003] At present, the decolorizing agents that have been applied or reported include: bentonite, activated clay,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/22C11B3/10
Inventor 车洪生耿红娟韩东战周跃华李晗钰
Owner 中铝郑州有色金属研究院有限公司
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