Technology for controlling or reducing plasticizers in grease and grease obtained through same

Abstract

The invention relates to a technology for controlling or reducing plasticizers in grease and the grease obtained through the same, and belongs to the field of grease processing.According to the technology, the content of phthalate plasticizers in the grease can be reduced to be within the allowed maximum residue limit range by adding amino adsorbing agents and/or specific acid substances.In addition, the technology is easy to implement, the technological processes are simplified, and the cost is saved.

Description

technical field [0001] The application relates to a process for controlling plasticizers in oil, especially phthalate plasticizers, and the oil obtained therefrom, belonging to the field of oil processing. Background technique [0002] Plasticizer, also known as plasticizer, is a widely used polymer material additive in industry. Adding this substance in plastic processing can increase the flexibility of plastic and make it easier to process. This industrial additive is prohibited for use in food. The plasticizers detected in food are mainly phthalate plasticizers, including: bis(2-ethylhexyl) phthalate (DEHP), diisononyl phthalate (DINP) , Di-n-octyl phthalate (DNOP), dibutyl phthalate (DBP), dimethyl phthalate (DMP), diethyl phthalate (DEP), etc. [0003] Phthalate plasticizers are colorless and transparent oily liquids that are insoluble in water but easily soluble in organic solvents. [0004] Because plasticizers can harm male reproductive ability and promote female ...

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Problems solved by technology

S.VenkataMohan, S.Shailaja, M.RamaKrishna, etc. Adsorptiveremovalofphthalateesterfromaqueousphasebyactiveatedcarbon: Akineticstudy.JournalofHazardousMaterials[J]. The effect of other plasticizers is not obvious and has certain limitations

[0010] Chinese patent application CN102961416A discloses a method for removing plasticizer residue and pollution in the raw material of Ganoderma lucidum spore powder. It removes the plasticizer in the raw material of Ganoderma lucidum spore powder by supercritical carbon dioxide extraction. The amount is small, not suitable for industrial production of oil

Chinese patent application CN102586022A discloses a method for removing plasticizers in plant essential oils, but its lower molecular distillation temperature (40-80° C.) cannot remove plasticizers to a maximum extent, and the removal rate is low. The content of di-n-butyl phthalate (DBP) cannot be removed below 0.3mg / kg, and the molecular distillation equipment and technical requirements are high, the cost is high, and the production capacity is limited

Chinese patent CN102295989B and Chinese patent application CN102304418A disclose the use of a solvent capable of dissolving and adsorbing phthalates as a back-extraction agent to remove phthalates in oils, but its 2-5 times of back-extraction Technology and the use of a larger stripping agent (the maximum usage is 8 times that of oil, weight ratio), which greatly increases the complexity and production cost of removing phthalates, and increases the subsequent recovery of stripping agent burden

[0011] At present, there is no report on the use of optimized oil refining process to reduce the residual phthalate plasticizers in oil

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