REMOVAL OF HIGH-MOLECULAR COMPOUNDS UNDER ACTION OF BAF-1 REAGENT INCLUDED BY DEPOSITS DURING STORAGE OF TRANSPORTED OIL IN TANKS

Abstract

Sedimentation occurs during storage and transportation of all produced oil, which leads to a reduction in the effective capacity of tanks, corrosion spills, difficulty in checking the condition of the tank, a large amount of oil loss and, most importantly, changes in the composition of oil. This, in turn, leads to a decrease in the volume of the fraction during oil refining. In order to effectively combat sediment formation, it is necessary to determine its essence, as well as the basic laws of this process. One of the most important problems in the operation of tanks is their cleaning. During long-term operation, sediment accumulates at the bottom of the tanks, which reduces their useful volume and complicates their operation. Sedimentation in tanks is due to the separation of solid phases in the oil and its subsequent deposition. This is a natural and necessary process that is directly related to the increase in the concentration of heavy components - asphaltene, resin, paraffn in the total volume of oil during the mixing of different oils. On the other hand, the separation of the solid phase depends on the physical and chemical properties of the oil, temperature and a number of other factors, and the intensity of accumulation depends on the design and maintenance characteristics of the tank. During long-term storage of oils of different densities and viscosities, depending on the constantly changing temperature regime of storage conditions, sediment accumulates at the bottom and walls of the tank and is unevenly distributed over the area. Its relative thickness is observed in areas far from the intake and distribution pipes, which does not allow to more accurately determine the actual amount of oil in the tank. Over time, the sediment thickens; washing is difficult in some areas, and sometimes not at all. To ensure efficient and reliable operation of the tanks it is important to regularly clean them of accumulated sediment. One of the most important problems in the operation of tanks is their cleaning. During long-term operation, sediment accumulates at the bottom of the tanks, which reduces their useful volume and complicates their operation. Sedimentation in tanks is due to the separation of solid phases in the oil and its subsequent deposition. Manual cleaning of tanks from oil sludge is a fairly common method of cleaning. First of all, this method is used to clean small tanks. When cleaning the tanks in this way, the tank is first steamed, then washed at a temperature of 30-50 ° C and a pressure of 0.2-0.3 MPa. The device used for pumping water consists of a pump and an ejector. The washing water is pumped along with the oil sludge. The solid sediment and sand are removed with a shovel, a shovel and a bucket. Cleaning of tanks from sediments is a dangerous labor-intensive work and requires considerable material costs. Even the most advanced chemical-mechanized treatment method does not eliminate human manual labor and requires preparation for the installation of additional equipment, as the main problem in technological and commercial tanks is the formation of high-molecular asphaltene and resin paraffin compounds in oils. The component composition of asphaltene-resin-paraffin sediments (ARPS) varies widely over a single oil recovery region, even within a single field. Knowing the composition of ARPS is of practical importance in determining the optimal methods of combating them, or more precisely in the selection of chemical reagents. A 1:1:1 mixture of all three sediments conventionally called BAF-1. the coordination polymer was injected and expelled until a dry residue was obtained (450-600 °C) and the sample was cooled and RFA analyzed. In order to prevent the formation of coagulants, it is important to pre-inject anticoagulant into the oil mass in the tank, which can successfully perform this task with the reagent we offer. As for the cleaning (washing) of the already formed sediments, the proposed reagent can break down large coagulants (associations) and ensure their re-dissolution in the oil mass. Keywords: asphaltene, resin, paraffin, associate, Balakhani, Bulla, Diogenes, BAF-1.