SU625741A1 - Electric dehydrator - Google Patents

Description

one

The invention relates to electro-dehydrators and can be applied in the petroleum, petrochemical, and chemical industries to destroy various water-in-oil, water and oil emulsion emulsions with a wide water cut. Efficient destruction of trap emulsions of oil fields and oil refineries, their plants due to their continuous accumulation in sewage treatment plants is of great interest from the point of view of protecting the environment from industrial pollution.

A device for treating emulsions in an electric field is known, in which the periodic primordial withdrawal of the enlarged particles of the dispersed phase under the action of centrifugal forces arising from an abrupt rotation of the flow of the processed emulsion from the downstream; subsequent

1. The drawbacks of such a device are due to the fact that the process of elimination of the enlarged particles is periodically produced, and this leads to the fact that for many enlarged particles that arise in the initial parts of the electric field along the emulsion, the strength of the electric field can be critical, which will lead to re-dispersion and, consequently, to the deterioration of the processing results. And further, due to low flow rates, removal of grouped water droplets is incomplete.

The closest to the invention in technical essence and the achieved result is an electric dehydrator, including a vertical case in which two electrodes are installed coaxially, and a tangential inlet pipe 2. The disadvantage of this device is that the constant expansion of the coarse water droplets and the redispersion of emulsin prn movement along the channel between the electrodes.

The purpose of the invention is the determination of the process of destruction of an emulsin.

For this, the proposed dehydrator is equipped with a spiral insert, electrodes installed on the melad, and the broken electrode is made with holes and with a cross section decreasing along the flow.

It is advisable to perform the outer electrode stepped or conical.

FIG. 1 shows an electric generator with a stepped external electrode; on

FIG. 2 - the same, with a conical outer electrode.

The dehydrator includes a housing 1, a tangential feed pipe 2, an internal high-potential electrode 3 in the form of a cylindrical or conical pipe, an external grounded electrode 4 in the form of a stepped or conical pipe, nozzles 5 and 6, respectively, of the oil outlet and water outlet.

In the gap between the internal high potential electrode 3 and the external electrode 4 there is a spiral insert 7 made of an insulating material. The internal high potential electrode 3, the external grounded electrode 4 and the spiral insert 7 form a spiral channel of a variable, decreasing flow of the cross section. The external grounded electrode 4 has holes 8 located along a spiral line.

The 8 "holes of the grounded electrode can be arranged with a uniform pitch or with a pitch increasing along the emulsion process. The internal high potential electrode 3 can be made isolated, partially isolated in the initial part, or uninsulated. The electrode version is determined by the initial water content of the treated emulsion.

Electrodehydrator works as follows.

Before booster, the Electrodehydrator is filled with an anhydrous product so that both the spiral channel of the electrodes and the body cavity are completely filled. The water-in-oil type emulsion is processed through the nozzle 2 and is directed into the ductal channel formed by the high potential electrode 3, the grounded electrode 4 and

spiral insert 7. Under the action of an electric field, small droplets of water begin to grow larger and, due to the emulsion along the spiral T, the centrifugal force displaces to a grounded electrode 4. On its surface, water droplets become even larger and are thrown out by centrifugal force through holes 8 the cavity of the body, filled with liquid, where they settle to the bottom in the settling part. The water accumulating in the lower part is removed from the corns through the nozzle 6. The dehydrated product is removed from the apparatus through the nozzle 5.

Claims (3)

1. Electrodehydrator, comprising a vertical case in which two electrodes are coaxially mounted, and a tangential inlet, characterized in that, in order to intensify the process of destruction of the emulsion, it is equipped with a spiral insert installed between the electrodes, and the opening electrode is made with holes and with decreasing downstream section. 2. Electrodehydrator according to Claim 1, characterized in that the outer electrode is stepped. 3. Electrodegenerator according to claim 1, of which is the fact that the outer electrode is made conical. Sources of information taken into account in the examination 1. USSR author's certificate number 362044, cl. C 10G 33/02, 1970. 2. US patent number 2042887, cl. 204-184,1936.