Summary of the raw materials and application of food grade grease
source:本站Popularity:2714Time:2016-01-20 15:21:44【小中大】
First, the base oil used in food grade grease:
At present, the base oil used in food grade grease mainly has two kinds: high quality refined mineral oil and synthetic oil.
(1) high quality refined mineral oil
Such as aromatic hydrocarbon hydrocracking mineral oil incompatible and saturate chain hydrocarbon accounted for more than 99%. 10mq/kq. domestic refinery sulfur content less than by adding hydrogen cracking process in production of pharmaceutical grade white oil can reach the level of USDA/NSFH1. And in common solvent extraction of mineral oil, saturate chain hydrocarbon only accounted for 65% of the ~ 75%, aromatic hydrocarbon accounted for 25% ~ 35%, sulfur content is 13 ~ 15000mq/kQ.
(2) synthetic oil
Synthetic base oil molecules is artificially designed to a certain size and structure, single component, in the microstructure to oxidation agent and water to bond the space. At present, food grade grease on the use of synthetic oil varieties are mainly Pao (poly alpha olefin), silicone oil, perfluoro polyether.
When PAO:PAO is a pure saturated hydrocarbon compounds, and does not contain aromatic hydrocarbons and other groups, so non-toxic, on the skin and mucous membranes no stimulating effect. Compared to the white oil and minerals, it has excellent anti foam and air separation, good chemical, physical stability, excellent permeability and adsorption properties, toxicity is also much lower than to food industry machinery transmission device under different lubrication deeply refined mineral type white.PAO applies, the service life of up to 6000 hours, is deeply refined mineral type white oil extended more than 3 times.
When silicone oil: silicone oil with a wide range of viscosity, excellent oxidation stability and excellent viscosity temperature characteristics of Kyo. Silicone oil as base oil made from silicone grease in food processing, medicine, bathroom sealing, lubrication, protection have outstanding performance.
] perfluoropolyether: perfluoropolyether has good thermal stability, oxidation stability, chemical inertness and insulation, the base oil made from food grade grease has unique advantages.
Two, food grade grease thickener:
Using food grade grease products thickener are mainly aluminum composite, white carbon black, anhydrous calcium, PTFE, bentonite and polyurea,. Future food grade grease should mainly calcium sulfonate complex grease is, at present, there are Europe and the United States company to produce the products. Food grade grease the specific use of what thickening agent, also need to for food machinery lubricating state can only be determined after the investigation.
Three, food grade grease has been widely used in the following areas:
] in the beer, beverage machinery and equipment, the most critical part is filling machine, its jar, distributor, filling valve and cover the first part to beer and and beverage contact these parts must use food grade grease;
] food packaging materials production equipment requiring the use of food grade grease. Glass bottle for beverage packaging, pop top cans, composite packaging (Tetra Pak), pet and PET bottles pull cans, PVC bottles belong to food with direct contact with the packaging and the food packing material production equipment lubrication should according to the provisions of the standards of hygiene in the selected class H1 food grade grease;
] dairy production equipment is made by stainless steel materials, bearings are seal life, a driving gear, etc. components are also made into a closed type, and products or water isolation. The dairy flows through the valve and homogenizer needs using food grade grease lubrication;
] soda, ice cream manufacturing machinery wide distribution and production conditions are poor, generally do not have good lubrication condition. Among them who may come into contact with food products mechanical friction parts require the use of food grade grease, when necessary, also can be refined coconut oil, refined castor oil or refined palm oil instead of white oil, to prevent contamination of food;
] sugar machinery lubricating grease and other food machinery industry with grease, tasteless, odorless, non-toxic. Especially may and refined sugar contact process more attention should be paid to, generally with sulfuric acid refining depth of white oil, in order to improve the oil, sometimes with refined castor oil, coconut oil dynamic plant oil. Sugar machinery rolling bearing lubrication requires use of food grade greases;
] fruits and vegetables processing by the use of a lot of equipment under high temperature and room temperature to use large quantities of water, susceptible to water mist or jet impact and result in loss of lubricating greases and oils, especially various cleaning machine and cleaning and disinfection machine. Consequently use has good protective, anti water sprinkling food grade grease;
The application of this food grade grease in feed production machinery and drinking water delivery pipeline industry is very extensive.
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