High-quality attapulgite oil decolorizing agent

Abstract

The invention discloses a high-quality attapulgite oil decolorizing agent, which is prepared by compounding modified attapulgite, gelatinized modified starch and a cross-linking agent according to a mass ratio of 80-90:(9-14):(2-5). According to the present invention, the attapulgite is subjected to osmotic activation treatment with phosphoric acid to improve the reaction ability of the attapulgite and the chemical reagent, the activated attapulgite is treated with aluminum chloride to improve the surface porosity of the attapulgite so as to improve the adsorption capacity, and then calcination and water cooling are performed so as to enhance the surface activity of the attapulgite is and make the outer surface structure of the attapulgite sparse, such that other substances easily enter the attapulgite so as to establish the new structure in the attapulgite.

Description

Technical field [0001] The invention relates to the technical field of attapulgite, in particular to a high-quality attapulgite oil decolorizer. Background technique [0002] With the development of the edible oil industry and the improvement of people’s living standards, the relationship between edible oils and human health has increasingly become one of the focuses of human attention. The decolorization of oils is one of the most important links in oil refining, and there are many methods for decolorizing oils. , In industrial production, the adsorption decolorization method is often used, that is, some substances that have a strong selective adsorption effect on the pigment are used to adsorb the pigment and other impurities in the grease under certain conditions to achieve the decolorization effect; the attapulgite has low activity Although the decolorization is not as good as the activated clay, the use of its decolorization can reduce the acid return of the decolorized oil ...

AI Technical Summary

Problems solved by technology

[0003] The existing attapulgite modification method is relatively simple, and the decolorization effect can still be further improved. Chinese patent literature (publication number: CN108854943A) discloses a modified attapulgite oil product decolorizer, comprising the following steps: A, crushing the attapulgite ore Crushing through a crusher; B, sieving and sieving the crushed attapulgite clay, with a particle size of 10-100 mesh; C, roasting, roasting the screened attapulgite clay in a roasting furnace, and the roasting temperature is controlled at 300 -360°C, the roasting time is controlled at 0.5-3 hours to prepare the oil decolorizer; E, instant cooling, sprinkle crushed ice on the baked attapulgite powder and stir; F, second baking, send the attapulgite powder Put it into a roasting furnace for roasting, the roasting temperature is controlled at 100°C, and the roasting time is 20 minutes. The attapulgite is roasted and then cooled at a high speed to make the attapulgite have pores to improve the decolorization effect. Although the invention can improve the decolorization effect, it can still be further improved.

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