Physicochemical Properties of Light Ractions Which Released During the Distillation of Diluted Oil Sludge

Abstract

The article presents the results of the development of an integrated technology for the disposal of oil sludge, research of the characteristics of oil sludge and the physical and chemical foundations of the process. We have determined the physicochemical properties of the distillate after the distillation of diluted oil sludge obtained at various process temperatures. A series of experiments were carried out to determine the density and viscosity, distilled fractions in the process of obtaining bitumen from oil sludge. To do this, the density of the fraction was first determined using a hydrometer and the viscosity of the fraction using a viscometer of the brand "Capillary glass viscometer VPZh-4". The viscosity value depends on the nature of the liquid, i.e. on its chemical composition, chemical structure and molecular weight. With an increase in the temperature of the distillate fraction within 105 ÷ 200 С, its viscosity gradually changes from 0,93 to 2,47 mm2/s. The density of the investigated fraction obtained at a temperature of 105 С is 765 kg/m3, and at a temperature of 110 С this indicator is 775 kg/m3, the change in the process temperature at 170 ºС also changes its density and is 785 kg/m3, with further an increase in temperature to 200 °C, the density index reaches its maximum, i.e. 820 kg/m3. At the same time, the article presents the results of the studies of the fractional composition of the distillate obtained during the disposal of oil sludge. Also, the amount of sulfur in the composition of the obtained fractions was determined during the distillation of a mixture of oil sludge. The results of determining the amount of sulfur in the separated fractions (light naphtha, heavy naphtha, heavy gas oil) are presented.