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Crude oil electro-desalting dehydrator

A technology of electric desalination and dehydration of crude oil, which is applied in the direction of electric/magnetic dehydration/emulsification, and electric/magnetic refining, etc., can solve the problems of small electric field space and high crude oil content in drainage, achieve high space utilization and reduce crude oil content Effect

Active Publication Date: 2012-11-21
CHINA PETROCHEMICAL CORP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a crude oil electric desalting and dehydrating device to solve the problems that the existing electric desalting and dehydrating devices for crude oil have a small electric field space and a high content of crude oil in the tank.

Method used

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Embodiment Construction

[0011] see figure 1 , figure 2 , The crude oil electric desalination dehydrator of the present invention includes a tank body 1 and a transformer 7 . The tank body 1 is a horizontal cylindrical tank body with electrodes inside. The bottom of the tank body 1 is provided with an inlet pipe 8 , a drain pipe 5 and a distributor 10 , and the top is provided with an outlet pipe 9 and a collector 11 . Among them, generally 2-4 inlet pipes 8 and outlet pipes 9 are arranged respectively, and 1-3 drain pipes 5 are generally arranged. figure 1 As shown, there are two inlet pipes 8 and two outlet pipes 9 respectively, and one drain pipe 5 is arranged.

[0012] The electrode level is provided with three layers of flat electrode plates (one more layer than the existing crude oil electric desalination dehydrator with two layers of flat electrode plates), and the three layers of flat electrode plates are the upper flat electrode plate 21 and the middle flat electrode from top to bottom. ...

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Abstract

The invention discloses a crude oil electro-desalting dehydrator which solves the problem that the conventional crude oil electro-desalting dehydrator has smaller electrical field space formed in a tank body and higher drainage crude oil content. An electrode in the tank body (1) is horizontally provided with three layers of planar electrode plates which are sequentially an upper layer planar electrode plate (21), a middle planar electrode plate (22) and a lower layer planar electrode plate (23) from top to bottom. A side electrode plate is arranged between the side edges of the same side at which the upper layer planar electrode plate and the lower layer planar electrode plate are arranged. The distance between the middle planar electrode plate and the lower layer planar electrode plate is greater than the distance between the upper layer planar electrode plate and the middle planer electrode plate; and the distance from the side electrode plate to the inner wall of the tank body increases from top to bottom. The crude oil electro-desalting dehydrator can be used for refineries of oil fields and petroleum processing industries and carries out the electro-desalting and dehydrationon the crude oil (mainly heavy crude oil).

Description

technical field [0001] The invention relates to a crude oil electric desalting dehydrator, which is used for removing salt and water contained in crude oil. Background technique [0002] Desalination and dehydration are essential pretreatment processes for crude oil. At present, in my country's oil fields and refineries in the petroleum processing industry, the crude oil processed by the electric desalination dehydrator gradually becomes heavier and contains more and more impurities. Heavy crude oil has the characteristics of high density, high viscosity, high asphaltene content and heavy metal content, and the aqueous emulsion is not easy to break. The salt content is generally above 100 μg / g. This makes the crude oil electric desalter dehydrator often not work smoothly, and affects the long-term operation of subsequent devices. In the electric desalination dehydrator, the electrodes act as the carrier for the transformer to apply an electric field to the crude oil, and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/02C10G32/02
Inventor 崔新安汪实彬刘家国袁海欣刘英李兵兵
Owner CHINA PETROCHEMICAL CORP
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