INFLUENCE OF THE TYPE OF DEMULSIFIERS OF THE SNPH BRAND ON THE PARTICLE SIZE OF WATER-PETROLEUM EMULSIONS AND ON THE SEPARATION PRODUCTIVITY OF ACETATE CELLULOSE MEMBRANE
The effect of demulsifiers of SNPH brand on the change in the particle size of the 5% water-petroleum emulsions based on Carbonic and Devonian oil, produced by the Aznakaevskneft petroleum and gas production department and used as a dispersed phase in an amount of 5 % by volume, was investigated. An experimental analysis of the separation of the obtained water-petroleum emulsions during membrane purification through acetate cellulose membranes with pore sizes of 0.2 and 0.45 nm was also carried out. Increases in membrane performance were determined in relation to the initial emulsions; the highest values of the emulsion purification degree were also established. Demulsifiers of SNPH brand showed a high ability to influence the separation of water-petroleum emulsions. According to the results with Carbonic oil, an increase in membrane productivity is observed when using samples with pore sizes of 0.45 nm: by 14% when adding demulsifier SNPH-4114 at a concentration of 50 g/t and by 10% when adding demulsifier SNPH-4460 at the same concentration. In the case of Devonian oil, an increase in membrane productivity is observed when using cellulose acetate membrane with pore sizes of 0.2 nm (by 63%) and 0.45 nm (by 89%) when adding demulsifier SNPKH-4114 at a concentration of 100 g/t, and by 74% with the addition of demulsifier SNPH-4460 at a concentration of 150 g/t.