SU1284580A1 - Apparatus for coalescence of aqueous-oil emulsion in electric field - Google Patents

Abstract

The invention relates to apparatus for coalescing a water-in-oil emulsion in an electric field and improves the efficiency of the coalescence process and the reliability of operation of the apparatus. The device contains a grounded cylindrical body with inlet and outlet fittings and a high-grade electrode coaxially located in it in the form of a rod beam, made multi-colored, with the Rus connected by transverse partitions, the diameter of which decreases in the direction to the output fitting. The diameter of the electrode bars in each rune increases, and the number of beams decreases in the direction of the outlet nipple. The transverse partitions of the electrode are made in a stepped form. Closest to the exit nipple, the electrode electrode is preferably made in the form of a plugged pipe. 4 hp f-ly, 6 ill. i (L

Description

The invention relates to devices for treating a water-oil emulsion in an electric field and can be used in the oil, oil refining, gas and other sectors of the industry.

The purpose of the invention is to increase the efficiency of the coalescence process and the reliability of the apparatus.

Figure 1 shows schematically the proposed apparatus for coalescing a water-oil emulsion in an electric field, a longitudinal section; figure 2 - section aa in figure 1; on fig.Z - section bb in fig. G; figure 4 - section bb In figure 1, fig.Z - node I in figure 1; FIG. 6 - node II in FIG. 1 (embodiment) ...

The apparatus contains a grounded cylindrical body 1 with INPUT 2 and output 3 unions. A high-potential electrode 4 is made along the axis of the apparatus. It is made of bundles of rods placed in several Rus, connected by transverse partitions 5. The electrode is connected to the high-voltage transformer 8 through the lead-through insulator 7 by means of a current leading cable 6 centered ribs 10 of the dielectric.

The closest to the output fitting 3 Rus electrode is made in the form of a pipe 11 with a plug 12.

Such an embodiment of the electrode is most expedient when the latter are made of rods, the diameter of which increases in the direction towards the outlet fitting, the electrodes of the electrode being made with the number of rods decreasing in the direction towards the outlet fitting. Transverse partitions are stepped. Closest to the exit nipple, the electrode rus is made in the form of a closed pipe section.

The device works as follows.

The original emulsion is fed into the apparatus through nozzle 2. In the volume between the electrode 4 and the housing 1, under the action of an electric field, water drops coalesce. The treated emulsion is withdrawn from the apparatus through the nozzle 3 and sent to a sump to separate water (not shown).

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The proposed electrode design creates an electric field in the apparatus, the intensity of which is highest in the initial processing area of the emulsion, and then decreases stepwise due to a decrease in the diameter of the electrodes and an increase in the distance between the electrode and the housing (average field strength is determined as a partial dividing the voltage on the electrode by the distance between the electrode and the housing).

In the initial part of the emulsion processing, the smallest droplets coalesce in the electric field with the highest voltage; in the next part, the larger droplets: as a result of coalescence in the initial part, larger droplets existing in the emulsion, etc. Thus, in the course of the flow, the size of the water droplets in the emulsion with this design increases and the enlarged water droplets can then be easily separated from the oil in the sump.

The process of coalescence of water droplets becomes even more effective due to the increase in the diameter of the electrode rods and the decrease in their number in each trough towards the outlet fitting.

The intensity of the electric field at the surface of the electrode rods depends on the ratio of the radii of curvature of the rod and the housing and increases with decreasing diameter of the rod. Under the action of the gradient forces of the electric field, as well as turbulent pulsations existing in the flow, water droplets fall into the strong field region near the surface of the rods. In the initial area (near the .j inlet fitting), where many small non-coalescing droplets are contained in the emulsion, the process of coalescence near the rods is intensified. However, when a large drop enters the region of a strong floor, it is crushed under the action of electrical forces. Consequently, an increase in the diameter of the electrode bars along the flow eliminates the possibility of an excessively strong electric field in areas where the enlarged drops fall. To a even greater extent contributes to this implementation of the upper part of the electrode

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pipe section. Due to the large radius of curvature of this pipe, the electric field at the final stage of processing the emulsion is almost uniform, which ensures the effective completion of the process of enlarging droplets.

The transverse partitions in the pre-apparatus perform two functions: stiffening elements for fastening the electrode rods (this is ensured by the stepped form of their execution) and hydrodynamic partitions that prevent the emulsion from passing inside the electrode volume without electrical treatment.

The invention also provides increased reliability of the apparatus due to a reduced likelihood of breakdown due to the even distribution of water over the cross section of the apparatus and a decrease in the tension of the floor in the zone of existing enlarged droplets, where the conducting plies are most likely to form.

chains from the formula of the invention

A field comprising a grounded cylindrical body with inlet and outlet fittings and a high-potential electrode coaxially located in it. In the form of a rod beam, characterized in that, in order to increase the efficiency of the coalescence process and the reliability of the apparatus,

it is a lot of light brown and it is equipped with transverse partitions placed between the coats, the diameter of which decreases in the direction to the outlet fitting.

2. The apparatus of claim 1, characterized in that the diameter of the bars increases from the shaft to the shaft towards the outlet fitting.

3. Apparatus pop. 1, the difference is that with the fact that the number

bars in rusa decreases towards the outlet nipple.

4. Apparatus pop. 1, characterized in that the transverse

partitions are stepped.

5. Apparatus pop. 1, characterized in that it is provided with a plugged pipe section,

1. Annapat for coalescence of water-30 to the transverse partition at the oil emulsion in the electrical outlet fitting.

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FIG. five

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FIG. 6

Claims (5)

1. Annapat for coalescence of water-30 to the transverse partition at the oil emulsion in the electrical outlet fitting. A field comprising a grounded cylindrical body with inlet and outlet fittings and a high-potential electrode coaxially located in it. In the form of a rod beam, characterized in that, in order to increase the efficiency of the coalescence process and the reliability of the apparatus, it is a lot of light brown and it is equipped with transverse partitions placed between the coats, the diameter of which decreases in the direction to the outlet fitting. 2. The apparatus of claim 1, characterized in that the diameter of the bars increases from the shaft to the shaft towards the outlet fitting. 3. Apparatus pop. 1, the difference is that with the fact that the number bars in rusa decreases towards the outlet nipple. 4. Apparatus pop. 1, characterized in that the transverse partitions are stepped. 5. Apparatus pop. 1, characterized in that it is provided with a plugged pipe section, attachment A 6-B in-in FIG. 2 ..four F (± U /. FIG. five Editor O. Bugir Compiled by O. Kal Kin Tehred V. Kadar Proofreader L. Pilipenko Order 7596/6 Circulation 656 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5  Production and printing company, Uzhgorod, ul, Proektna, 4 R I FIG. 6