SU1333364A1 - Method and apparatus for dehydration and desalination of water/petroleum and water/oil emulsions - Google Patents

Abstract

The invention can be used in the oil fields and refineries. The purpose of the invention is to increase the efficiency and intensity of emulsion separation. The emulsion is passed through the mesh charged electrode 2 and zones 5 of settled water, which acts as a charged electrode. Then, the charged particles of water are fed into the zone of rotating magnetic and non-uniform electric fields. On the cone-shaped electrode 4 with opposite charge, neutralization and coagulation of water droplets occurs and they move toward the wall of housing 1 to the region of the largest magnetic field and to zone 5 of water lagging. 2 sp.f-ly, 1 ill. with iP 5 Oil ct / ha bffZBKt CO 00 oo

Description

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The invention is intended for the distribution of water-based oil-water and oil-borne emulsions and can be used in the dehydration of oil in the oil fields and oil refineries, as well as in the field of oil use.

The aim of the invention is to increase the efficiency and intensity of emulsion separation.

The drawing shows a diagram of an apparatus for carrying out the proposed method.

The device consists of a cylindrical body 1 with inlet and outlet nozzles, at the bottom of which a negatively charged mesh electrode 2 is located. The device contains a source 3 of a rotating magnetic field located around the body 1. A cone-shaped electrode 4 with a positive potential is located inside the body 1, the interelectrode space housing 1 is divided into zone 5 of water settling and a zone of 6 sludge (septic tank),

The method includes the following operations: passing the emulsion through a charged electrode, which is under a layer of water and having the same electrical potential, moving the emulsion towards the opposite polarity and neutralizing droplets on it, coalescing water droplets and sucks. Movement of the emulsion, neutralization, coalescence and sludge occur in the area of rotating magnetic and non-uniform electric fields.

- The device works as follows.

At the same time, the emulsion supply pump, the supply of the magnetic field source 3, creating a rotating magnetic field, and the high voltage source creating an electric field between electrodes 2 and 4, are turned on. At the beginning of operation, the branch pipes for removing water and oil (oil) are closed, opening the lower branch pipe. After reaching i the layer of purified oil (oil), the upper branch pipe is torn off and the oil (oil) is removed. Either; a (sedimentation water is carried out only at certain points in time in order to maintain a predetermined thickness of the layer corresponding to the optimum value for: electricity electric 33642

go gender The proposed device can be automated and used for operation in flow mode. The emulsion enters the housing 1 through the lower pipe. The passage through the mesh negatively charged electrode 2, the water droplets of the emulsion are captured, enter zone 5 of settled water, where the fluid loses the largest drops of water, desalted, and gives an extra charge (because the water layer has a negative potentdial). ) enters the inter5 electrode space of the zone 6 located at a distance between the surface of the positively charged electrode 4 and the surface of the water layer. In zone 6 of the sludge (settler), a non-uniform electrostatic and rotating magnetic field affects the emulsion Q

On the electrode 4 of the coaus form, the droplets are neutralized by transferring the charge to the electrode 4, they coagulate and move to the wall of the housing 1 and to the zone 5 located in the bottom of the body.

0 Simultaneously, water droplets are drawn into dipoles, their coagulation and sedimentation under the action of Lorentz’s force and force, If the emulsion water drops did not reach electrode 4 and bear charge, they are subject to Lorentz’s force of rotating 1 gnitnogo sex . Due to the high rotational speed of the magnetic field, significant forces

d Lorentz rotating magnetic field. These same forces act on charges induced in drops when they are drawn in dipoles. As a result, water droplets constantly rotate, preventing the formation of conductive chains of dipoles between electrode 4 and the surface of the water, through (which can discharge and decrease electric potential. Due to the conical shape of the electrode 4, the distance between electrodes 2 and 4 the walls of housing 1 are smaller than in the center, which creates an electrostatic field gradient that causes droplets-dipoles to move to the wall of housing 1, into the zone of the largest magnetic field. Purified oil (oil) accumulates in the upper part of housing 1 and through the top nozzle.

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Example 1 Processing emulsion of water in oil at a concentration of 15% by volume of water. The emulsion under a certain pressure with a speed of 3 cm / g-gin is fed through a grid electrode into the body, which is a glass cylindrical vessel. On the electrodes, located at a distance of 8 cm, a constant electric voltage of 10 kV is applied and simultaneously rotating magnetic field. Processing the emulsion makes it possible to achieve a water content of 0.2% (without a demulsifier and preheating) j, while without a rotating magnetic field the purification rate is 2.5%,

Example 2. Treatment of an emulsion with the same water content in oil under the same conditions allows a purification rate of 0.5% water to be achieved.

Thus, in the proposed method and device, it is possible to more effectively influence the emulsion with electric and rotating magnetic fields in the zone between the layer of separated water and the surface of the conical electrode, to charge the emulsion water drops as they pass through the layer of separated water and create additional force that repels a drop of water to a conical electrode due to the fact that the distance between the electrodes at the walls of the housing is less than in the center, the intensity of the fields there is higher, which creates an electric gradient nical field to the housing wall, causing the movable yuschy dipoles in zone largest value of the magnetic field and thus a greater value of the strength at the edges bolyZshe droplets have dipole moments, and consequently large value forces the dipole-dipole interaction

Editor E.Sligan Order 3863/6

Compiled by O. Kal Kina Tehred I. Popovich

Circulation 656 VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Ra usushka nab, d. 4/5

Production and printing company, Uzhgorod, st. Project, 4

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The trunk and forces of Lorentz. Due to this increase. the quality of dehydration and desalting of oil, especially in high-viscous oils and oils, and the efficiency of emulsion processing.

By preventing the formation of the conductors of the w-1X chains and the occurrence of short circuits between the electrodes, the installation is safer.

Claims (2)

1. The method of dewatering and desalting water-to-water to oil-water: muls. - Inclusion of dropping the emulsion through a charged E. electrode, moving it in a magnetic field towards the electrode with opposite polarity and subsequent neutralization, coalescence and sludge, characterized in that in order to increase the efficiency and intensity of the separation of the emulsion, it is additionally passed through a layer of sedimentary water, using a rotating magnetic field and a non-uniform electric field. 2. The device for dewatering and desalting water-based oil and water-oil emulsions, including a housing, a charged electrode, an electrode of opposite polarity, a magnetic field source and an emulsion sump, characterized in that, in order to increase the efficiency and intensity of emulsion separation, the charged electrode located under a layer of water settling, and the electrode of opposite polarity is made in the form of a cone. Proofreader A.Ilyin Subscription