Food grade lubricating grease used for feed processing machines, and preparation method and application thereof

Abstract

The invention relates to a food grade lubricating grease used for feed processing machines, and a preparation method and an application thereof. The lubricating grease comprises, by mass, 85-95% of base oil, 5-15% of a composite aluminum thickener, and 6-12% of an additional extreme pressure anti-wear agent. The preparation method comprises the following steps: heating all the base oil to 50-60 DEG C, adding benzoic acid, heating benzoic acid to 70-80 DEG C, adding a preheated aluminum stearate polyoxide polymer after the benzoic acid is dissolved, stirring the dissolved benzoic acid and the preheated aluminum stearate polyoxide polymer, heating the stirred materials to 150 DEG C in 1-2 h, continuously heating the stirred materials to a highest refining temperature of 200-220 DEG C, cooling the heated materials to 80 DEG C, adding a pressurizing anti-wear agent, uniformly stirring all above materials, grinding the obtained mixture, degassing the ground mixture, and filling the degassed mixture. The preparation method of the lubricating grease has the advantages of simplicity, short cycle, and improvement of the quality of the above product and the safety and the healthiness of the production process only through three raw materials. The lubricating grease meets lubricating demands in running of the feed processing machines, such as granulator devices, and accords with the safety and health demands in the feed processing industry.

Description

technical field [0001] The invention relates to food-grade lubricating grease, more precisely, food-grade lubricating grease applied to a feed granulator and a preparation method thereof. The preparation process is simple, safe for feed products and has good water resistance, high temperature resistance and shear resistance. and extreme pressure and wear resistance. Background technique [0002] Dioxin, also known as dioxin (qǐ), is a colorless, odorless, highly toxic, fat-soluble substance. Dioxin is actually an abbreviation of Dioxins, which refers to It is not a single substance, but two types of organic compounds that contain many congeners or isomers with similar structures and properties. Dioxins include 210 kinds of compounds. These substances are very stable, have a high melting point, are extremely difficult to dissolve in water, and can be dissolved in most organic solvents. They are colorless, odorless, fat-soluble substances, so they are very easy to accumulate ...

AI Technical Summary

Problems solved by technology

The factory produces 360,000 tons of feed per year, and the granulator equipment needs 6 tons of grease; according to the statistics of China Feed Industry Information Network, China's total feed output in 2014 is about 197 million tons, and the national feed industry granulator in 2014 is calculated according to the same ratio. The grease consumption of the equipment is: 6 tons / 360,000 tons*197 million tons=3,300 tons, of which it is estimated that the usage of food-grade grease is less than 5%, which means that at least about 3,000 tons of industrial grease enters the feed every year in the country Inside, the content of industrial oil in the feed reaches 6 tons / 360,000 tons = 17ppM, enters the poultry system through the food chain, and finally enters the human body, causing major hidden dangers to food safety

[0009] Through literature and patent inquiries, there are no literature and patent reports on food-grade grease used in feed pellet machines and other feed processing machinery at home and abroad.

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