RESULTS OBTAINED IN THE DIRECTION OF PRODUCING AVIATION OILS FROM THE MIXTURE OF BAKU “NEFT DASHLARI” OILS

Abstract

The purpose of the currently presented article is to obtain some results in the direction of producing aviation oils from a mixture of Baku "Neft Dashlari" oils. Deasphaltizates (I and II stages) obtained as a result of the tar deasphalting of "Neft Dashlari" oil were used as raw materials. In order to increase the chemical resistance of the oil, processing of the oil with various reagents was carried out with different methodologies, including using ordinary 98% sulfuric acid and bleaching earth, neutralization with activated sulfuric acid and bleaching earth, some adsorbents, including silica gel, and selective solvents. Based on the obtained results, it can be noted that the deasphaltizate of ready "Neft Dashlari" oil can be used as a raw material for the production of high-grade aviation oils. The most effective and, at the same time, the most cost-effective way of cleaning is the cleaning of the deasphaltizate of "Neft Dashlari" oil with NM-Pyrollidone. Here, the versatility of the method and the fact that not only the stability of the oil but also the viscosity curve improve, however, at the same time as a result of processing with significant losses of oil and reagent, attract special attention. All the other methods described in this article have some effect, that is, firstly, either the chemical stability is increased or the viscosity curve is improved, and therefore their combination is required; secondly, they are still less effective and also require large losses. Keywords: aviation oils, NM-Pyrrolidone, selective solvent, sulfuric acid, viscosity, viscosity index, silica gel, sulfuric acid.