Estudo e análise do processo de rerrefino de óleo lubrificante usado.

Abstract

Nowadays, in addition to envisioning profit, optimizing processes and saving energy and materials, companies are increasingly committed to applying sustainable development in their activities. In this context, the re-refining of used lubricating oil gains great relevance, since it is directly associated with the saving of petroleum as a raw material, with the saving of energy in the processes, as well as avoiding environmental contamination by the inappropriate and illegal disposal of lubricating oil. used. In this work, a study was carried out with the purpose of verifying the influence of each stage of the traditional process of re-refining used lubricating oil. Used lubricating oils were collected from automotive workshops in the city of Campina Grande and the traditional re-refining process was carried out in the laboratory, consisting of the stages of dehydration and light extraction, vacuum distillation, chemical treatment, neutralization, clarification and filtration. The collected residual oils, those from each of these stages and the final re-refined oils obtained were characterized and compared with the standards required by the NBR and ASTM standards. It was possible to obtain re-refined oils that meet most of the quality standards imposed by the technical norms and the results obtained from the performance of the re-refining processes and the characterizations carried out allowed the influence of each stage of the traditional process of re-refining of used lubricating oil to be observed. , as well as the importance of each one for the process as a whole.