Reclaiming used fire-resistant turbine oils

A sample of used OMTI oil based on trixylenyl phosphate was used which did not meet specification requirements for optical density, acid number, content of xylenols and other property indexes. The filtered OMTI oil samples were finished by treatment with adsorbents and physiocochemical treatment with caustic solutions (aqueous and alcohol) were performed. Results of each treatment are presented. The effect of demulsifiers was investigated with the aim of intensifying the treatment and reducing the losses with the introduction of 0.5% Disolvan. The feasibility of reclaiming used turbine oils was demonstrated.