T/CRRA 0901-2018, Base Oil for Regenerated Lubricating Oil

Scope

Scope: This standard applies to Class I lubricating oil base oils produced from waste mineral oils classified as HW08 in the "National Hazardous Waste List" (excluding codes 071-001-08, 071-002-08, 072-001-08, 251-001-08, 251-002-08, 251-003-08, 251-004-08, 251-005-08, 251-006-08, 251-010-08, 251-011-08, 251-012-08) as raw materials, which undergo pre-treatment such as molecular distillation, vacuum distillation, or thin-film evaporation, followed by clay refining or solvent refining. Additionally, hydrogenated Class II lubricating oil base oils and regenerated tail oil are also included. Main technical content: Used oil refers to mineral lubricating oil that has been replaced due to impurities, oxidation, and thermal effects during the lubrication of machinery. Regenerated base oil refers to the lubricating oil base oil obtained after separating and removing the deteriorated components and impurities of waste mineral oil through scientific and reasonable processes. Molecular distillation is a process that uses the difference in the average free path of chemical molecules to separate the light and heavy components in waste mineral oil under conditions far below their boiling and cracking temperatures. Thin film evaporation involves using evaporation equipment to separate, purify, and concentrate waste mineral oil into a medium-boiling point base oil. Vacuum distillation involves increasing the vacuum in the system to reduce the boiling point of the distillate, allowing materials to be vaporized and separated based on their boiling point differences, thereby obtaining different distillate products. Clay refining involves using clay as an adsorption material to improve the color and stability of oil products. Solvent refining involves using solvents to selectively separate non-ideal components based on their solubility in oil, thereby refining oil products. Hydrofining involves using a hydrogenation reactor filled with catalysts to hydrogenate unsaturated hydrocarbon

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