I、The factors that influence the quality of lubricating oil
The existence of hydrocarbon mixtures（non-hydrocarbons、alkenes、condensed-nuclei aromatics ）, metal ions, mechanical impurities, metal particles, asphaltine、colloid in the recycling of waste lubricating oil will influence the quality of lubricating oil. These harmful substances can react with each other under the external factors （oxygen, light and temperature）; chemical changes （polyreaction, oxidation） may occur at this time also, creating black colors or some grain stillages.
II、Our company has developed a set of recycling waste oil regeneration technique.
This technology is using the principle of catalysts in chemical process. We developed an alkaline compound catalyst which can take some selective chemical reactions between these harmful substances（like polymerization, shielding, passivation）, discharge the harmful substance in the form of residue,remove the unsafe factor during use of waste lubricating oil, and then refine the waste oil, get the qualified base lubricating oil.
The technology is different from the traditional distillation, and also different from the current favorite technology which using the steam heated method to regenerate the waste oil. Just for the waste residue and waste gas created by the traditional distillation way will easily pollute our environment. And the oil gets by the latter way will discolored by oxidation with the bad smell.
The technology process of our company: the reclaimed waste lubricating oil （including gasoline engine oil / diesel engine oil and almost all waste recoverable oil） will be treated with catalysts first, and then get the regenerated lubricating base oil which is the same as the origin waste oil by distillation. This base oil can not be discolored by oxidation and no bad smell release; the waste residue can be used as fuel so as to reduce the pollution of environment. With the high degree of automation control technology, our equipment easy to be operated by one or two workers without complicated operation.
After remove the mechanical impurity, oil will treat by the chemical kettle, then add the catalyst aqueous solution in the kettle and stir it under the normal temperature and pressure. The raw material will be pumped into intermittent distillation kettle after catalytic treatment, under the high vacuum condition, the distilled water、fuel oil and base oil will be extract in turn from distillation kettle. After any kinds of boiling-range base oil cools off by the dedicated chiller plant, it can be recycled. And the machine will discharge the waste residue （can be used as fuel）.We take hydronic heating method to treat the waste oil during the process of distillation ; you can use electricity, fuel oil, natural gas and coal, etc. to heat it；Our machine equipped with waste gas processor for gas purification treatment .