Download Design Aspects of Used Lubricating Oil Re-Refining by Firas Awaja, Dumitru Pavel PDF

By Firas Awaja, Dumitru Pavel

Layout features of Used Lubricating Oil Re-Refining provides a possible and accomplished know-how for recycling of used lubricating oils. This publication discusses effective and powerful methods of reusing lubricating oil which, if applied, will bring about a greater caliber of existence, the soundness of our surroundings, the well-being of nationwide economies and higher relationships among countries. It provides crucial experimental effects for technique designers and engineers to set up an entire method layout. The stipulations and behavior in every one step within the re-refining technique, (dehydration, solvent extraction, solvent stripping, and vacuum distillation) are tested which will learn how to recuperate and reuse wastes which are produced by way of lubricating oils. .Addresses and demonstrates the present wisdom of the method behaviour and re-refining expertise of used lubricating oils.Contains ninety four figures and 22 tables that on effects in regards to the re-refining procedure behaviour of used lubricating oil.Compares re-refined oil homes and their distillation behaviours to virgin and used oils

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1 indicate that the maximum ash reduction is achieved for solvent to oil ratio of 4:1. The oil recovery and ash reduction for the same ratio are better than that obtained for solvent to oil ratio of 3:1 and 2:1. This indicates that by increasing the solvent amount, the solvency power is improved. The percentage of oil recovery for the solvent to oil ratio of 6:1 is further improved, but this solvent to oil ratio produces an ash reduction lower than that obtained for the solvent to oil ratio of 4:1 and 5:1 as shown in Fig.

Atmospheric distillation unit. 5 ANALYSIS AND TESTS METHODS 27 (5) Vacuum pressure: a vacuum pressure below 4 mBar caused total evacuation of the vapor to the vacuum lines. While vacuum pressure larger than 8 mBar produced a high temperature fractionation, and the temperature rose rapidly far away from the cracking point of 370 ◦ C. The cooled water temperature in the condenser was fixed to be 15 ◦ C for all experiments. Temperatures lower than 15 ◦ C produced fraction with low viscosity that inhibited flow.

It was found that 25% 2-propanol, 35% 1-butanol and 40% butanone was the most suitable solvent composition to be used with Iraqi used lubricating oil. This solvent mixture produced 96% oil recovery and 65% ash reduction. It was found that some oil components, which have high molecular weights, in addition to the contaminants that have also high molecular weights, do not dissolve in rich propanol solvent mixtures, since 2-propanol is very selective to the high molecular weight oil components. Consequently valuable high molecular weight oil component will not be recovered and lost to the raffinate phase.

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