Regeneration of spent low-freezing liquids

One of the reasons for the frequent breakdown of car engines is its overheating, which is caused by the unsatisfactory state of low-freezing fluids that need to be changed in a timely manner, however, every year, thousands of tons of ethylene glycol are simply poured into the sewer. Ethylene glycol and its solutions in water are poisonous. Unlike light petroleum products, they cause poisoning only when ingested. Therefore, studies on the regeneration of low-freezing liquids are appropriate and relevant from an environmental and economic point of view. There are various ways to regenerate low-freezing liquids, however, they are all very laborious and energy-consuming. The purpose of this work is to develop a method for the regeneration of low-freezing liquids with the maximum reduction in energy and labor costs. Objects of the research is waste low-freezing liquids for their further regeneration. The subject of the publication of a scientific article is the development of a method for the regeneration of antifreezes by filtration and distillation. An optimal method for the regeneration of waste low-freezing liquids has been developed. Waste low-freezing liquids (waste) are liquids in the cooling system that have ceased to perform their main functions. The method of regeneration and separation of ethylene glycol from spent antifreezes includes settling, filtration, and then distillation in an assembled installation. The resulting regenerated low-freezing liquid was tested in laboratory conditions in terms of quality indicators in accordance with the standards, and positive results were obtained.

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