Crude oil desalting method and device using rotational flow breakaway technology

A technology of swirl separation and crude oil, which is applied in swirl devices, devices with the axial direction of the swirl unchanged, and refining with the help of centrifugal force, etc., can solve the problems of complicated DC electric swirl desalination operations, high energy consumption of electric desalination equipment, and occupation of Large land and other issues, to achieve the effect of easy implementation, simple structure, and overcome large energy consumption

Inactive Publication Date: 2005-01-26
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

The primary technical problem to be solved by the present invention is to overcome the disadvantages of existing electric desalting equipment, such as large energy consumpt

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  • Crude oil desalting method and device using rotational flow breakaway technology
  • Crude oil desalting method and device using rotational flow breakaway technology
  • Crude oil desalting method and device using rotational flow breakaway technology

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specific Embodiment approach 2

[0039] When the salt content at the inlet of the crude oil cyclone desalter is greater than 8mg / L, a secondary cyclone desalter device is used, and the process flow is shown in the attached figure 2. Utilize the primary cyclone desalter (2-1) to separate the crude oil into oil phase and oily sewage; the oily sewage enters the settling tank (3-3) to separate into sewage oil and salty sewage, and the sewage oil is discharged into the sewage tank, containing The salt water is discharged; the separated oil phase is injected into water and demulsifier and enters the secondary cyclone desalter (2-2), and then separated into oil phase and oily sewage by cyclone, and the oil phase enters the settling tank (3-1 ), the settled crude oil enters the downstream device, the oily sewage and the oily sewage from the secondary cyclone desalter (2-2) enter the settling tank (3-2) together, and the settled dirty oil is discharged into the dirty oil tank , the saline sewage is reinjected into t...

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Abstract

The invention disclose a crude oil desalting method and device using rotational flow breakaway technology, wherein the method consists of, isolating the primary oil with charged water and demulsifying agent into oil phase and oil-contaminated water at 100-300 deg. C, isolating the oil phase through sedimentation by precipitation tank, entering downstream unit, charging the dirty oil into dirty oil tank, and discharging the salt-containing sewage water. One stage, two stage or multiple stage cyclone desalting unit can be utilized based on the requirement.

Description

technical field [0001] The invention relates to a method and a device for removing salts in crude oil by cyclone technology, which can be widely used in the field of petroleum refining. Background technique [0002] Crude oil contains salts and impurities, which have adverse effects on crude oil processing, equipment and products, and desalination is required before refining. With the development of secondary processing technology in recent years, more specific requirements have been put forward for the salt content of crude oil after desalination: for the purpose of anti-corrosion, the salt content of crude oil after desalination must not exceed 5mg / L; The catalyst in the processing process requires deep desalination. The salt content of the desalted crude oil is not more than 3mg / L, and the water content is not more than 0.3% (volume ratio). [0003] Industrial devices usually use electrostatic desalination methods or chemical desalination methods. Although the use of ele...

Claims

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Application Information

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IPC IPC(8): B04C3/00C10G31/10
Inventor 汪华林白志山王建文
Owner EAST CHINA UNIV OF SCI & TECH
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