ADSORPTION PURIFICATION OF TRANSFORMER OIL SILICA GEL IN COMBINATION WITH CERAMIC MEMBRANES

The article presents the results of regeneration of waste oil power transformer with long-term operation. The methods of adsorption purification of transformer oil. To assess the contamination of transformer oil mechanical impurities, was applied the standard method GOST 6370-83, which includes filtration through a paper filter and gravimetric determination of total amount of filtrate. It is determined that the specified method does not allow to assess the overall range of particle sizes and their distribution across several size ranges. It is proved that this technique also makes it impossible to classify the cleanliness of oil according to the accepted purity classes GOST 17216-2001. Meanwhile, the electric strength of the oil significantly depends not only on quantity but also on the particle size. Due to the fact that data on observed sizes of the particles of mechanical impurities in the oil of transformers in the introduction to the work and exploitation in the literature are practically absent, in work researches of transformer oil at the facilities of JSC "Uzbekenergo" (PSA, JSC "Energotamir"). The experimental results purification of transformer oil from different kinds of impurities with application of the developed ceramic membranes. The purified oil showed high dielectric properties, and is consistent with the requirements of normative documents. It is proved that the most promising method is adsorption treatment of the oil in a moving bed of adsorbent, wherein the process operates continuously, without stopping for periodic replacement, regeneration or filtration of the adsorbent. The proposed scheme of creation of mobile units on the basis of ceramic membranes that will allow to regenerate oil at the place of operation of the power transformer.

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