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Dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination method and equipment

A technology of electrical dehydration and dielectrophoresis, which is applied in the direction of using electricity/magnetic dehydration/demulsification, separation of liquids by electricity, separation of immiscible liquids, etc.

Inactive Publication Date: 2011-04-20
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Abstract
  • Description
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Problems solved by technology

Many people think that the contribution of dielectrophoretic coalescence to electrostatic coalescence is smaller than that of electrophoretic coalescence, and they do not pay enough attention to it

Method used

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  • Dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination method and equipment
  • Dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination method and equipment
  • Dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination method and equipment

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Embodiment Construction

[0021] Further detailed description will be given below in conjunction with the accompanying drawings.

[0022] Depend on figure 1 It can be seen that the equipment of the present invention mainly includes an inlet assembly 18, a tank body 17 and an electrode assembly 14, wherein: the inlet assembly 18 is composed of a crude oil inlet 1, a fresh water inlet 3, a flow meter 4, a static mixer 6, valves 2, 5, etc.; The tank body 17 is provided with an inlet pipe 7 connected to the inlet assembly 18, a distributor 8, a water outlet pipe 9, a water outlet 10, and a valve, and an oil outlet 13 is arranged on the back of the tank body 17; a high-voltage insulated wire 15 The high-voltage explosion-proof transformer 16 is connected to the electrode assembly through the shell of the tank body 17; the distributor 8 is a steel plate with round or square holes.

[0023] Depend on figure 2 It is shown that the electrode detail 14 is corrugated, and the corrugated electrodes 14 are verti...

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Abstract

The invention discloses a dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination method and dielectrophoresis demulsification mechanism-based novel crude oil electric dehydration and desalination equipment. The core part of the equipment is an electrode component which may consist of vertically suspended corrugated-plate-shaped electrodes installed with the wave crests and wave troughs of each two adjacent electrodes corresponding one by one respectively, or may consist of corrugated-plate-shaped electrodes and flat-plate-shaped electrodes, which are combined alternately and arranged vertically, wherein the surface of each electrode is coated with a compact insulation layer. When a high-voltage current is applied onto the electrode component, horizontal and non-uniform electric fields are generated between electrode plates to arouse the dielectrophoresis agglomeration of dispersed phase water particles in crude oil emulsion. The method and the equipment disclosed by the invention can meet the dehydration and desalination requirements of crude oil emulsions with different water content, particularly the agglomeration growth and fine dehydration and desalination requirements of dispersed phase small water particles in crude oil emulsion of oil refineries. In addition, the method and the equipment help greatly reduce the use amount of chemical demulsification agent, reduce overall operation cost and improve economic benefit of the oil refineries.

Description

technical field [0001] The invention belongs to the technical field of electric dehydration and desalination of crude oil in petrochemical industry, and relates to a new method and equipment for electric dehydration and desalination of crude oil based on dielectrophoresis demulsification mechanism, which is suitable for the coalescence of small water particles in dispersed phase in crude oil emulsion of refinery It can also be used for dehydration and desalination of wellhead crude oil in oil and gas field development projects, and can even be used in W / O emulsion liquid membrane separation technology and other occasions. Background technique [0002] Crude oil needs to be dehydrated and desalted before entering the distillation unit in the refinery to reduce the water content to 0.1% to 0.2%, and to make the concentration of salt less than 5mg / L. Salts in crude oil mainly exist in the form of alkali metal and alkaline earth metal salts, and most of them are dissolved in the...

Claims

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Application Information

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IPC IPC(8): C10G33/02B01D17/06B01D17/04
Inventor 陈家庆丁艺
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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