Crude oil emulsion fluid electrostatic coalescer

Abstract

The invention discloses a crude oil emulsion fluid electrostatic coalescer. The crude oil emulsion fluid electrostatic coalesce comprises a barrel which is of a cylindrical structure, wherein a grounding terminal inlet pipeline and an outlet pipeline are arranged on the outer side surface of the barrel; the two ends of the barrel are connected with an insulating end enclosure and end surface sealing covers; cable introducing holes which are used for introducing high/low-voltage cables and are connected with multiple high/low-voltage electrodes in the barrel are formed in the two end surface sealing covers respectively; a low-voltage electrode is arranged on an axis, and a high-voltage electrode is wound outside the axis in a concentric manner, and the high-voltage electrode is closest to the barrel housing; a plurality of foldout supporting plates for guiding the crude oil emulsion fluid and supporting high/low-voltage electrodes are arranged on the inner part of the barrel. The crude oil emulsion fluid electrostatic coalesce has the advantages of being compact in structure, small in floor space and convenient to dismount, is suitable for an oil-water separating process on the sea and improving original oil-water separating equipment; uneven electric fields are introduced to achieve good coalescence effect on uncharged liquid drops in the emulsion fluid with low moisture content, which is difficult to treat by dipole coalescence and electrophoresis coalescence through normal electric dehydrating equipment, so that the treatment capacity of electrostatic coalescence equipment is strengthened.

Description

technical field [0001] The invention relates to a crude oil emulsion electrostatic coalescence device, which is mainly used in the liquid electric coalescence dehydration process of land and offshore oilfield production, can realize rapid coalescence of water droplets in water-in-oil emulsion, has compact structure, and is convenient for transportation , The advantages of fast connection. Background technique [0002] Water-in-oil emulsions are widely found in petroleum, chemical and other industrial production processes. Dehydration of crude oil is a key link that the petroleum industry must go through. Chemical and physical methods are usually used to accelerate the thinning and rupture of the water droplet interface film to improve the coalescence efficiency. . Electrostatic coalescence technology is one of the commonly used methods in the crude oil dehydration process. Its basic principle is to apply a high-strength electric field to the emulsion to increase the collisi...

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Problems solved by technology

[0007] In view of the problems that the internal electrodes of traditional electric dehydration equipment are easy to break down, the coalescence efficiency is low, and the turbulent flow and dielectrophoretic coalescence cannot be effectively used, the present invention provides a method that can effectively overcome the phenomenon of "collapsed electric field" and adapt to large water content. range, reasonably generate and use turbulent pulsations, and at the same time introduce an efficient and compact crude oil emulsion electrostatic coalescer for dielectrophoretic coalescence, thereby reducing the volume of downstream sedimentation equipment and reducing energy consumption in the electric dehydration process. Crude oil dehydration treatment in offshore oilfields provides a new type of crude oil emulsion electrostatic coalescer with small footprint, high efficiency, and easy disassembly

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