Waste oil recycling is a challenge that cannot be solved without oil reclamation. Used oil is a result of the production of many industries: electric power, transport, metallurgy and car industry. The situation is complicated by the presence of various washing fluids in such waste oils.
There are three fundamentally different approaches to the reclamation of waste oils. The first approach uses physical methods. It is only suitable for oil with little contamination, with the absence of irreversible changes. Physical methods remove microdroplets of water and solid particles, and partially remove the coke and resinous substances. For this purpose, it is sufficient to use a conventional centrifuge. Light fractions are removed by evaporation and distillation. The other two methods of oil reclamation are thermophysical.
Physicochemical methods are more complex. Among them is adsorption – a process of adhesion of harmful impurities from oil by substances of natural and artificial origin. Another method adds reagents into oil, which selectively act on undesirable components.
Chemical methods of oil reclamation are used in the presence of noticeable changes in oil. Oil reclamation, in this case, needs expensive and large equipment that is used in oil refineries. There are no other ways to realize alkaline and sulfuric acid refining since it is impossible to do under normal conditions.
Complete oil reclamation is achieved through a combination of the methods listed above. Their specific sequence is chosen based on the state of oil and set requirements for operation. In addition, the combination of different approaches makes it possible to regenerate various oils: transformer, turbine, industrial, cable, etc.
GlobeCore designs and manufactures mobile oil regeneration units. CMM-R regenerates insulating oil in a transformer tank and reactivates a used sorbent (Fuller’s earth) at the same time. Other oils (turbine, industrial, etc.) can be regenerated by UVR oil purification systems. This equipment is of a slightly different type. The first difference is in the sorbent used. The second difference is that the entire sorbent is removed after a full cycle of regeneration.
To conclude, let us note that oil reclamation is not only a part of waste management, but it also saves cost on purchase of fresh oil.