I propose to consider how it is possible to regenerate this type of oil on specific equipment of GlobeCore. Accordingly, all calculations for the cost side will be based on the rate of consumption of replacement or consumables, in relation to this equipment.
On the choice of equipment for the regeneration of transformer oil
Oil processing unit type UVR
To restore (regenerate) the oils, we offer two types of equipment. These are installations such as UVR (installation of vacuum regeneration) and installations of the CMM-P type (oil mobile station for regeneration). Despite the practically identical principle of operation in the transformer oil processing, the equipment is characterized by the possibility of regenerating the sorbent itself, the type of sorbent used and the areas of application of this equipment. In this article, I will limit myself to economic aspects. I will devote a separate article to a more detailed examination of each type of equipment.
The essence of the method of cleaning with sorbents: through the container, filled with sorbent, oil is passed. During regeneration, the active surface of the sorbent (capillaries) is filled (wetted) with a liquid, essentially a mixture of “right” molecular structures, “wrong” and impurities of water. So capillary tension is more to heavy molecular structures and more specifically involves them inside the capillary. Those. In time, all light molecules (most) will be replaced by heavier molecules, primarily water impurities. Thus, at the outlet of the tank, we get an oil containing a “correct” molecular structure. With this regeneration process, the sorbent, electricity, the life of the filter elements and the equipment itself will be consumed, and, of course, the loss of the cleaning product itself is inevitable.
The main aspect of the expense item is, of course, the sorbent consumption. Now we are talking about equipment such as UVR, where the sorbent is to be replaced (after each oil regeneration). In the line of our products there is equipment that allows us to restore the sorbent-CMM-4R itself, but this is again an additional cost. For the initial calculation, I propose to consider that the spent sorbent will simply be disposed of (or at least stockpiled until the moment of purchase of equipment like SMM-4R). Here, the sorbent consumption is directly proportional to the contamination of the oil and the presence of water. Naturally, we all understand that some preparation of raw materials (old oil) is necessary: at least cleaning from mechanical impurities and water content. It is normal if the moisture content in the oil is below 50 ppm. With increasing moisture content, the sorbent resource falls. As practice has shown, bad heavily soiled oils consume up to 25% of the sorbent of its weight. Those. 250 kg of sorbent can regenerate up to 1000 kg of contaminated oil. If the oil was not burnt, and the problem of exceeding the acid number exceeding the boundary rate several times, then the sorbent consumption can be reduced to 10%.